Evangelion
Jul 13, 08:19 AM
Like I said, my laptop has a hotter CPU in it. I've yet to hear a good argument as to why a Conroe is too hot to put in an iMac when they had G5's in them not so long ago. If a Macbook can handle 35W then the much much bigger and thicker iMac can handle 65W.
Well, MacBook can barely handle that 35W CPU. Everyone is complaining how hot the MBP runs. 65W is a lot hotter, and while iMac is thicker, remember that some of that thickness is taken by the screen. So the actual space for components might not be that much bigger in the end.
Personally, being a consumer and not Steve Jobs, I couldn't care less if it's more work for them to design a new MoBo for Conroe. I put my money where the best performance is, not what's easiest for Apple.
More work = higher price.
Like I said, Conroes are cheaper than Meroms for the performance you can get. It would be sheer stupidity of Apple to put meroms in their desktop because it would cost them just as much to put them in there and they'd be getting lower performance. Which means iMacs would be over-priced and under-performing compared to any other desktop.
iMacs are using mobile processors as we speak. Are they "overpriced" and "underperforming"? According to you, they are.
The current iMac isn't competitive, and you'd be mad not to admit that. 512Mb RAM standard? Underclocked X1600 128Mb?
Sure it's competetive. It's selling very well, and you actually get quite a lot for your money.
It's also less powerful and more expensive (per Mhz) than Conroe. So it's logical for Apple to put a less powerful, more expensive CPU in their computers? Funny deffinition of logic.
you sound like performance is the only thing that matters. There's also the design-effort (substantial with Conroe, minimal with Merom) and power-consumption and heat-output (both which Merom excel at).
If it's possible for apple to put Conroe in the iMac (and it is) then they will, because it makes economic sense to pay the same and get a better product for both Apple and consumers. I think the effort of designing a new MoBo would be more than worth that.
What makes you think that it would be better? "because it's faster!". There are more to "goodness" of the design than performance. Merom will offer more than enough performance, while running cool and quietly.
And when there are cheaper desktops with 2.4 and 2.6Ghz Conroes in them what will consumers buy? It doesn't make sense to pay more and get less, no matter how pretty the packaging is.
You can't really compare iMac to some generic tower-PC from Dell. Those tower-PC's will always be more versatile and cheaper than the iMac is, while being faster. That is a fact.
I intend to buy an iMac when I can get a 2.4Ghz Conroe in it. If they get Merom I simply will not buy one and buy a PC instead
Go right ahead. And if you onloy care for raw performance, you should have switched to PC's long ago.
You aren't really making any sense with your arguments. In fact, you only argument is that "Conroe is faster!". Well whoop-de-doo! Merom is almost as fast, and it's a drop-in replacement for their current CPU, and it runs cooler than Conroe does. I would rather have a good Merom in iMac than underclocked Conroe.
Well, MacBook can barely handle that 35W CPU. Everyone is complaining how hot the MBP runs. 65W is a lot hotter, and while iMac is thicker, remember that some of that thickness is taken by the screen. So the actual space for components might not be that much bigger in the end.
Personally, being a consumer and not Steve Jobs, I couldn't care less if it's more work for them to design a new MoBo for Conroe. I put my money where the best performance is, not what's easiest for Apple.
More work = higher price.
Like I said, Conroes are cheaper than Meroms for the performance you can get. It would be sheer stupidity of Apple to put meroms in their desktop because it would cost them just as much to put them in there and they'd be getting lower performance. Which means iMacs would be over-priced and under-performing compared to any other desktop.
iMacs are using mobile processors as we speak. Are they "overpriced" and "underperforming"? According to you, they are.
The current iMac isn't competitive, and you'd be mad not to admit that. 512Mb RAM standard? Underclocked X1600 128Mb?
Sure it's competetive. It's selling very well, and you actually get quite a lot for your money.
It's also less powerful and more expensive (per Mhz) than Conroe. So it's logical for Apple to put a less powerful, more expensive CPU in their computers? Funny deffinition of logic.
you sound like performance is the only thing that matters. There's also the design-effort (substantial with Conroe, minimal with Merom) and power-consumption and heat-output (both which Merom excel at).
If it's possible for apple to put Conroe in the iMac (and it is) then they will, because it makes economic sense to pay the same and get a better product for both Apple and consumers. I think the effort of designing a new MoBo would be more than worth that.
What makes you think that it would be better? "because it's faster!". There are more to "goodness" of the design than performance. Merom will offer more than enough performance, while running cool and quietly.
And when there are cheaper desktops with 2.4 and 2.6Ghz Conroes in them what will consumers buy? It doesn't make sense to pay more and get less, no matter how pretty the packaging is.
You can't really compare iMac to some generic tower-PC from Dell. Those tower-PC's will always be more versatile and cheaper than the iMac is, while being faster. That is a fact.
I intend to buy an iMac when I can get a 2.4Ghz Conroe in it. If they get Merom I simply will not buy one and buy a PC instead
Go right ahead. And if you onloy care for raw performance, you should have switched to PC's long ago.
You aren't really making any sense with your arguments. In fact, you only argument is that "Conroe is faster!". Well whoop-de-doo! Merom is almost as fast, and it's a drop-in replacement for their current CPU, and it runs cooler than Conroe does. I would rather have a good Merom in iMac than underclocked Conroe.
StudioGuy
Sep 26, 10:45 AM
I originally thought that this would make a nice "best" model for the Mac Pro, but the 5160 is surely a great chip. Given the slower clock speed (although not always a good indicator) and more cores, this might be a great chip for a Server, like an updated XServe.
Not sure if the software guys are going to catch up enough in multithreading to make good use of 8 cores, but several folks on an XServe would appreciate it.
Not sure if the software guys are going to catch up enough in multithreading to make good use of 8 cores, but several folks on an XServe would appreciate it.
Daveoc64
Mar 13, 08:44 AM
Here is a good question: Would you want to live next to a nuke power plant?
Living "next" to a Nuclear Power Plant is probably better than living "near" one.
In the event of a meltdown the area that would be irradiated is very large. Those further away would suffer more long term effects, while those much closer would die a relatively quick death!
I live 10 miles (and that's driving, so it's probably less if you draw a straight line on a map) away from a Nuclear Power Station and it doesn't worry me.
Living "next" to a Nuclear Power Plant is probably better than living "near" one.
In the event of a meltdown the area that would be irradiated is very large. Those further away would suffer more long term effects, while those much closer would die a relatively quick death!
I live 10 miles (and that's driving, so it's probably less if you draw a straight line on a map) away from a Nuclear Power Station and it doesn't worry me.
WiiDSmoker
Apr 20, 08:58 PM
Nope, doesn't work that way for many viruses. Even if you have show hidden files and folders and show hidden system files check to show they still don't necessarily show thats the problem, its either a bug in the OS or something legit that people are exploiting. You can't even get them in command prompt but you can see them when plugged into other OS's. They are usually in a folder along with a script that does something to keep them hidden, or something somewhere else keeps them hidden.
I honestly have no idea how you have the job that you do, because you fail tremendously in this aspect.
I honestly have no idea how you have the job that you do, because you fail tremendously in this aspect.
maclaptop
Apr 28, 08:06 AM
The real facts are its only a report. The bottom line is Apple is stronger than ever and doing a great job.
That's all that matters to me.
One look at the stock price reminds me of how fortunate I was to get in when shares were selling for under $20.00
Its been a good ride.
That's all that matters to me.
One look at the stock price reminds me of how fortunate I was to get in when shares were selling for under $20.00
Its been a good ride.
toddybody
Apr 15, 11:09 AM
I'm sorry, but any writing that advocates death to someone is wrong.
If you want to preach love, kindness, and being good to thy neighbor, I'm all for that.
Ha ha!:rolleyes:
Thanks for the kind words...Im just taking what MacVault is saying in context.
I dont believe (and if he is...Im 100% against his post. So forgive me folks if you thought I meant otherwise) that he's advocating death for gay youth...but rather a gay lifestyle will result in eternal death/damnation/etc as it conflicts with the scriptures he cited. I encourage folks to read my other posts (especially early pages) to get an idea of my own personal opinion. Stay well friend!
If you want to preach love, kindness, and being good to thy neighbor, I'm all for that.
Ha ha!:rolleyes:
Thanks for the kind words...Im just taking what MacVault is saying in context.
I dont believe (and if he is...Im 100% against his post. So forgive me folks if you thought I meant otherwise) that he's advocating death for gay youth...but rather a gay lifestyle will result in eternal death/damnation/etc as it conflicts with the scriptures he cited. I encourage folks to read my other posts (especially early pages) to get an idea of my own personal opinion. Stay well friend!
arkitect
Apr 15, 12:46 PM
gay behaviour was tolerated in Rome though lesbian behaviour was not.
Not if you believe HBO! All Roman women were raging lesbians (or at least bi-sexual).
The hunky men, not so much… *sigh*
:p
Not if you believe HBO! All Roman women were raging lesbians (or at least bi-sexual).
The hunky men, not so much… *sigh*
:p
aswitcher
Jul 12, 03:46 PM
Smallish mid-tower case
Intel Core 2 Duo @ 2.8Ghz or better
1GB RAM
250GB SATA 3.0 HD
1-PCIe x16 Slot
1-Standard PCI Slot
6-USB 2.0 ports (One in front)
1- Firewire 800 port (in front)
Dual Layer DVD
Onboard 10/100/1000 (I don't care if its wireless, but a wireless opition would be nice but not necessary)
Graphics Card should be x1600XT or better with 256mb RAM
I want it at or less than $1199.00
4 ram slots so I can get 2 gig cheap or 4 gig if I want it.
2 x FW 400s well.
BT/AX standard of course.
Frontrow IR port.
Optical audio in/out.
User replacable Ram, HDD, Graphics card(?).
Intel Core 2 Duo @ 2.8Ghz or better
1GB RAM
250GB SATA 3.0 HD
1-PCIe x16 Slot
1-Standard PCI Slot
6-USB 2.0 ports (One in front)
1- Firewire 800 port (in front)
Dual Layer DVD
Onboard 10/100/1000 (I don't care if its wireless, but a wireless opition would be nice but not necessary)
Graphics Card should be x1600XT or better with 256mb RAM
I want it at or less than $1199.00
4 ram slots so I can get 2 gig cheap or 4 gig if I want it.
2 x FW 400s well.
BT/AX standard of course.
Frontrow IR port.
Optical audio in/out.
User replacable Ram, HDD, Graphics card(?).
citizenzen
Mar 14, 07:15 PM
Your English comprehension could be better. Calling Nuclear 'The only Green Solution' (or Choice) is NOT calling it Green. The opinion piece merely points out that hydrocarbon burning is LESS Green. See the difference?
Thank you for admonishing me on my reading comprehension. Perhaps you could make yourself available for private tutoring to help those of us who are disadvantaged.
Burning hydrocarbons may produce less CO2 than nuclear fission, however I would be interested in seeing the entire process quantified.
How much power does it take to provide and maintain storage of the waste, and to mine the uranium? What impact does the operation of the plant have on the environment? What is the cost to humans and the environment when these plants fail as they have?
All of these need to be taken into account when one considers how green nuclear power is.
Thank you for admonishing me on my reading comprehension. Perhaps you could make yourself available for private tutoring to help those of us who are disadvantaged.
Burning hydrocarbons may produce less CO2 than nuclear fission, however I would be interested in seeing the entire process quantified.
How much power does it take to provide and maintain storage of the waste, and to mine the uranium? What impact does the operation of the plant have on the environment? What is the cost to humans and the environment when these plants fail as they have?
All of these need to be taken into account when one considers how green nuclear power is.
gorgeousninja
Apr 21, 06:58 AM
But just like Windows, it's practically impossible to have any problems unless you do something stupid.
I'm guessing that you haven't used any of the earlier versions of Windows much... cos everyone else knows about the random glitches, screen freeze, BSOD and crashes .... unless you count turning it on as stupid ... Well, actually that I can agree with. :)
I'm guessing that you haven't used any of the earlier versions of Windows much... cos everyone else knows about the random glitches, screen freeze, BSOD and crashes .... unless you count turning it on as stupid ... Well, actually that I can agree with. :)
cmaier
Apr 21, 08:50 PM
Isn't that the same thing google said with the nexus one?
I may be forgetting something. :rolleyes:
No, but how is that relevant anyway? An Apple fan was dissing microsoft.
I may be forgetting something. :rolleyes:
No, but how is that relevant anyway? An Apple fan was dissing microsoft.
Amazing Iceman
Apr 28, 11:27 AM
I just think Apple is making a mistake by not making some low end machines.
I know many here go OMG SHOCK HORROR about anything not made from Aluminium and Unicorn Horn Dust, but in reality, it would pay them, long term to make some nice looking plastic low end machines.
You can make plastic and metal trim things still have a nice finish.
Families walk into stores in the UK, I'm not sure about the US and look at the vast, and I mean VAST array of nice, in their mind, looking PC Laptops, perhaps to buy one for the wife, or one for the kids at school. They may walk past the small Apple table, see the near �1000 price tag, and think, yeah, right, like we're going to get one of those. I could get two good spec'd windows Laptops for that price.
I know people here will disagree as many are in a different wage bracket to "normal consumers" but I can tell you, most people are not going to throw down a grand for a computer for the kids to take to school.
As the only REAL difference between a PC and a Mac these days is the OS it's running, there is no reason Apple could not make a laptop directly at the price point of a medium to low end Windows laptop and then, people may buy them, and perhaps get used to OS X and in years to come go for an iMac.
Ever heard of the Mac Mini???
The day Apple starts making Netbook quality computers I will start hating Apple.
How good is a cheap computer when it works like crap? I know many people who bought cheap PCs and laptops, and when I tried to used them, it was very annoying how slow these were.
I know many here go OMG SHOCK HORROR about anything not made from Aluminium and Unicorn Horn Dust, but in reality, it would pay them, long term to make some nice looking plastic low end machines.
You can make plastic and metal trim things still have a nice finish.
Families walk into stores in the UK, I'm not sure about the US and look at the vast, and I mean VAST array of nice, in their mind, looking PC Laptops, perhaps to buy one for the wife, or one for the kids at school. They may walk past the small Apple table, see the near �1000 price tag, and think, yeah, right, like we're going to get one of those. I could get two good spec'd windows Laptops for that price.
I know people here will disagree as many are in a different wage bracket to "normal consumers" but I can tell you, most people are not going to throw down a grand for a computer for the kids to take to school.
As the only REAL difference between a PC and a Mac these days is the OS it's running, there is no reason Apple could not make a laptop directly at the price point of a medium to low end Windows laptop and then, people may buy them, and perhaps get used to OS X and in years to come go for an iMac.
Ever heard of the Mac Mini???
The day Apple starts making Netbook quality computers I will start hating Apple.
How good is a cheap computer when it works like crap? I know many people who bought cheap PCs and laptops, and when I tried to used them, it was very annoying how slow these were.
Cromulent
Apr 24, 10:13 AM
No matter what logic you use, they can twist the words from their holy books and change the meaning of things to, in their minds, completely back up their point of view.
This is an interesting point I think. I actually find it much easier to respect real religious wackos who state blindly that every work in the Bible is true simply because they are not butchering their own religion.
As soon as you start down the slippery slope of stating that some things in the Bible (I use the Bible as an example but this applies equally to all religions) are not true (i.e the world was created in seven days) or that certain parts are meant to be interpreted by the reader (who's interpretation is correct?) you lose all credibility. If you are so determined to change your religion so that it fits in with modern science what is the point of being religious?
Surely if god is all knowing and all powerful the Bible would have taken all of that into account. I mean just because man didn't know about all of these scientific ideas god surely must have done. I find it surprising that the messages he sent the prophets wouldn't take into account something that someday may invalidate large sections of the Bible as rubbish. So why would you need to adapt your beliefs, unless of course the god doesn't exist and the Bible was just written by a bunch of blokes performing a rather cynical political exercise 2,000 years ago.
This is an interesting point I think. I actually find it much easier to respect real religious wackos who state blindly that every work in the Bible is true simply because they are not butchering their own religion.
As soon as you start down the slippery slope of stating that some things in the Bible (I use the Bible as an example but this applies equally to all religions) are not true (i.e the world was created in seven days) or that certain parts are meant to be interpreted by the reader (who's interpretation is correct?) you lose all credibility. If you are so determined to change your religion so that it fits in with modern science what is the point of being religious?
Surely if god is all knowing and all powerful the Bible would have taken all of that into account. I mean just because man didn't know about all of these scientific ideas god surely must have done. I find it surprising that the messages he sent the prophets wouldn't take into account something that someday may invalidate large sections of the Bible as rubbish. So why would you need to adapt your beliefs, unless of course the god doesn't exist and the Bible was just written by a bunch of blokes performing a rather cynical political exercise 2,000 years ago.
mixel
Apr 10, 06:35 AM
Lets be honest, APPLE will never buy Nintendo or Sony. Apple will make them inferior and insignificant. Apple will not create the same games but rather will change gaming. Apple will probably make gaming more interactive and more inclusive.
Make gaming more interactive and inclusive? What?
Sofar Apple have shown no signs of making Nintendo or Sony inferior or insignificant. If they "change gaming" in a linear progression from how they've been doing it so far it would be a MASSIVE regression for gaming. I would not be welcoming them as gaming overlords.
I would say the odds are greater that Sony will buy Nintendo in a desperation move to remain relevant or Sony will get bought out by Microsoft after Apple starts creating televisions. Mark my words, Apple will never buy a bloated and inferior company. To truly believe that makes you a moron.
Agreed, but one could say the same about most of the things you wrote in your post. Sony buy Nintendo? Ummmm.. Sony and Nintendo are pretty relevant outside of blindfolded Mac fan circles.
Make gaming more interactive and inclusive? What?
Sofar Apple have shown no signs of making Nintendo or Sony inferior or insignificant. If they "change gaming" in a linear progression from how they've been doing it so far it would be a MASSIVE regression for gaming. I would not be welcoming them as gaming overlords.
I would say the odds are greater that Sony will buy Nintendo in a desperation move to remain relevant or Sony will get bought out by Microsoft after Apple starts creating televisions. Mark my words, Apple will never buy a bloated and inferior company. To truly believe that makes you a moron.
Agreed, but one could say the same about most of the things you wrote in your post. Sony buy Nintendo? Ummmm.. Sony and Nintendo are pretty relevant outside of blindfolded Mac fan circles.
rxse7en
Oct 20, 01:30 PM
My 24" came in earlier this week. Using it as my main monitor and the MBP screen is my tools monitor now. Very happy overall and the SD and CF ports are a bonus.
B
B
arkitect
Apr 15, 12:01 PM
ALL Catholics are called to chastity. 100% of them. It's too bad you don't know what the word means.
Really? ;)
So I can have same-sex sex and it is just as OK (in the eyes of the Catholic Church) for me and my partner as it is for a straight couple to have sex?
Kewl.
I don't think so… But nice try anyway.
Ah, semantics.
Of course most people (and I am sure good Catholics) equate it with sexual abstinance.
Really? ;)
So I can have same-sex sex and it is just as OK (in the eyes of the Catholic Church) for me and my partner as it is for a straight couple to have sex?
Kewl.
I don't think so… But nice try anyway.
Ah, semantics.
Of course most people (and I am sure good Catholics) equate it with sexual abstinance.
PhantomPumpkin
Apr 21, 09:16 AM
Have we established that turning off location services actually disables this "feature"?
No, I misunderstood what he was referring to. After reading more into it, it's different than the locations feature on there. Instead of using it like a GPS, it actually seems to track based off tower triangulation.
No, I misunderstood what he was referring to. After reading more into it, it's different than the locations feature on there. Instead of using it like a GPS, it actually seems to track based off tower triangulation.
*LTD*
Apr 13, 05:51 AM
Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8G4)
Looks like Apple made it easier to use and the so-called "Pros" feel threatened by that because it takes less specialized knowledge to do impressive work. We might not be there yet, but in time even grandma can edit. You get the point.
Part of the reason established IT folk feel so threatened by Apple.
Looks like Apple made it easier to use and the so-called "Pros" feel threatened by that because it takes less specialized knowledge to do impressive work. We might not be there yet, but in time even grandma can edit. You get the point.
Part of the reason established IT folk feel so threatened by Apple.
Sydde
Mar 14, 02:39 PM
We have abundant coal which I believe can be made to burn cleanly although I'm not necessarily advocating that.
We may have lots and lots of coal, but actually getting at it economically without human catastrophe or long-term environmental destruction kind outweighs most of its value. Then, "burn cleanly" is a dubious concept. Even if you can clean it up, how much does that cost, how much energy dies it take to clean it up, and how much do you lose from the coal's potential energy? Industry touts clean coal, others claim the very concept is a myth, I am not sure who is closer to the practical reality of the situation.
We may have lots and lots of coal, but actually getting at it economically without human catastrophe or long-term environmental destruction kind outweighs most of its value. Then, "burn cleanly" is a dubious concept. Even if you can clean it up, how much does that cost, how much energy dies it take to clean it up, and how much do you lose from the coal's potential energy? Industry touts clean coal, others claim the very concept is a myth, I am not sure who is closer to the practical reality of the situation.
appleguy123
Apr 23, 12:49 AM
The ad at the top is calling us out.
>>I'm referring to an ad that says "Learn grammar punctuation."
>>I'm referring to an ad that says "Learn grammar punctuation."
ddtlm
Oct 12, 03:30 PM
Wow I missed a lot by spending all of Friday away from this board. I am way behind in posts here, and I'm sure I'll miss a lot of things worth comment. But anyway, the code fragment:
int x1,x2,x3;
for (x1=1; x1<=20000; x1++) {
for(x2=1; x2<=20000; x2++) {
x3 = x1*x2;
}
}
Is a very poor benchmark. Compilers may be able to really dig into that and make the resulting executable perform the calculate radically different. In fact, I can tell you the answer outright: x1=20000, x2=20000, x3 = 400000000. It took me 2 seconds or so. Does this mean that I am a better computer than a G4 and a P4? No, it means I realized that the loop can be reduced to simple data assignments. I have a better compiler, thats it.
Anyway, lets pretend that for whatever reason compilers did not simplify that loop AT ALL. Note that this would be a stupid stupid compiler. At each stage, x1 is something, we ++x2, and we set x3 = x1 * x2. Now notice that we cannot set x3 until the result of X2++ is known. On a pipelined processor that cannot execute instructions out of order, this means that I have a big "bubble" in the pipeline as I wait for the new x2 before I can multiply. However, after the x3 is started into the pipe, the next instruction is just another x2++ which does not depend on x3, so I can do it immediately. On a 7-stage in-order chip like a G4, this means that I fill two stages of the pipe and then have to wait for the results on the other end before I can continue. You see that this is very inefficient (28% or so). However, the G3 is a 4-stage design and so 2/4 of the stages can stay busy, resulting in a 50% efficientcy (so a 700mhz G3 is "the same as" a 350mhz G3 at 100% and a 800mhz G4 is "the same as" a 210mhz G4 at 100%). These are of course simplified cases, the actual result may very a bit for some obscure reason.
Actually the above stuff is inaccurate. The G3 sports 2 integer units AFAIK, so it can do x3 = x1*x2 at the same time as it is doing x2++ (for the next loop of course, not this one). This means that both pipes start one bit of work, then wait for it to get out the other end, then do one bit of work again. So this is 25% efficientcy. A hypothetical single-pipe G3 would do x3 = x1*x3 and then do x2++, however it could not do x3 = x1 * x2 again until the x2++ was out the other end, which takes 4 cycles and started one after the previos x3 = x1*x2, which should mean 3 "bubble" stages and an efficientcy of 20%.
Actually, it may be worse than that. Remember that this is in a loop. The loop means a compare instruction (are we done yet?) followed by a jump depending on the results of the compare. We therefore have 4 instructions in PPC I think per loop, and we can't compare x2 to 20000 until x2++ has gone through all the pipe stages. (Oh no!) And we can't jump until we know r]the result of the compare (oh no!). Seeing the pattern? Wanna guess what the efficientcy is for a really stupid compiled version of this "benchmark"? A: really freaking low.
I'll see about adding more thoughts later.
int x1,x2,x3;
for (x1=1; x1<=20000; x1++) {
for(x2=1; x2<=20000; x2++) {
x3 = x1*x2;
}
}
Is a very poor benchmark. Compilers may be able to really dig into that and make the resulting executable perform the calculate radically different. In fact, I can tell you the answer outright: x1=20000, x2=20000, x3 = 400000000. It took me 2 seconds or so. Does this mean that I am a better computer than a G4 and a P4? No, it means I realized that the loop can be reduced to simple data assignments. I have a better compiler, thats it.
Anyway, lets pretend that for whatever reason compilers did not simplify that loop AT ALL. Note that this would be a stupid stupid compiler. At each stage, x1 is something, we ++x2, and we set x3 = x1 * x2. Now notice that we cannot set x3 until the result of X2++ is known. On a pipelined processor that cannot execute instructions out of order, this means that I have a big "bubble" in the pipeline as I wait for the new x2 before I can multiply. However, after the x3 is started into the pipe, the next instruction is just another x2++ which does not depend on x3, so I can do it immediately. On a 7-stage in-order chip like a G4, this means that I fill two stages of the pipe and then have to wait for the results on the other end before I can continue. You see that this is very inefficient (28% or so). However, the G3 is a 4-stage design and so 2/4 of the stages can stay busy, resulting in a 50% efficientcy (so a 700mhz G3 is "the same as" a 350mhz G3 at 100% and a 800mhz G4 is "the same as" a 210mhz G4 at 100%). These are of course simplified cases, the actual result may very a bit for some obscure reason.
Actually the above stuff is inaccurate. The G3 sports 2 integer units AFAIK, so it can do x3 = x1*x2 at the same time as it is doing x2++ (for the next loop of course, not this one). This means that both pipes start one bit of work, then wait for it to get out the other end, then do one bit of work again. So this is 25% efficientcy. A hypothetical single-pipe G3 would do x3 = x1*x3 and then do x2++, however it could not do x3 = x1 * x2 again until the x2++ was out the other end, which takes 4 cycles and started one after the previos x3 = x1*x2, which should mean 3 "bubble" stages and an efficientcy of 20%.
Actually, it may be worse than that. Remember that this is in a loop. The loop means a compare instruction (are we done yet?) followed by a jump depending on the results of the compare. We therefore have 4 instructions in PPC I think per loop, and we can't compare x2 to 20000 until x2++ has gone through all the pipe stages. (Oh no!) And we can't jump until we know r]the result of the compare (oh no!). Seeing the pattern? Wanna guess what the efficientcy is for a really stupid compiled version of this "benchmark"? A: really freaking low.
I'll see about adding more thoughts later.
torbjoern
Apr 24, 05:03 PM
islam is unpleasant and, i guess for want of a better word, evil.
That was a bit harsh, wasn't it? Not even I would go as far as saying that anybody's religion is evil. But it's definitely proves to be incompatible with modern Western values, which we began to see already in 1994 (Salman Rushdie). My only comfort is that those who have contributed to accelerate the conflicts by providing a lousy integration policy, will likely be the first ones to get stoned to death. I'm a male who doesn't drink alcohol nor commit adultery (and pork meat I can live without), so an islamic state wouldn't really be that bad for me to live in... I think...
That was a bit harsh, wasn't it? Not even I would go as far as saying that anybody's religion is evil. But it's definitely proves to be incompatible with modern Western values, which we began to see already in 1994 (Salman Rushdie). My only comfort is that those who have contributed to accelerate the conflicts by providing a lousy integration policy, will likely be the first ones to get stoned to death. I'm a male who doesn't drink alcohol nor commit adultery (and pork meat I can live without), so an islamic state wouldn't really be that bad for me to live in... I think...
diamornte
Apr 13, 02:50 AM
Wait, what happened to all that talk of iPad integration? Another Macrumorfanboy wet dream?
LegendKillerUK
Mar 18, 08:47 AM
Here's a newsflash: Just because you put something into a contract doesn't make it legal or make it fair. What if AT&T stipulated that they were allowed to come by your house and give you a wedgie every time you checked your voicemail...? Would you still be screaming about how its "justified" because its written on some lop-sided, legalese-ridden piece of paper?
No, because that is clearly retarded.
No, because that is clearly retarded.
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