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Quad 7900GTX not just for Dell - Page 3

post #21 of 77
I wish to give an example first to clarify my view. There are many methods of hard drive control protocols. LBA (logical block addressing), Standard CHS (Cylinder, Head and Sector addressing), Extended CHS...

Each method controls and secures the data on the hard drive platters and does so differently. However, that being said, once the data leaves the hard drive controller it is in binary format and the CPU is uninvolved with the method of storage translation. In other words, the CPU is out of the equation with that work being performed.

With new modern GPU's it is the same thing. Data is given to the GPU and then the GPU takes over the processing independent of the processor unless there are instructions that can not be handled by the GPU (which is then passed to the CPU for operation, however this hardly ever happens as the CPU accurately decides which instruction will be operated on by which CPU/GPU) the GPU's work is also independent of the processor.

Yes, the processor must be involved in transferring the data to the GPU's and for I/O instruction on certain events but the majority is mastered completely by the GPU and less is relegated to the CPU than one might think. GPU's are fundamentally more complex and involved than CPU's so it would make no sense to off-ramp instructions for the CPU when the GPU is running full RISC instructions faster than the CPU could.

When the data leaves a hard drive it is identical regardless of the translation on the drive/controller. When the data leaves the GPU controller the same thing happens. Only with data processing is the CPU being taxed and with multi-cpu the order of the day we could well see an entire cpu left with the handling of all I/O events.
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post #22 of 77
While the gpu handles the graphics, true, the cpu runs the game itself. It runs the underlying code so that the video card has information to process in the first place. There are several games that are very cpu dependent. Fear, for example. Just look at some benchmarks using that game. At lower resolutions, almost all mid to high end cards will get around the same fps. The SLI and CF only take a giant leap ahead when running really high resolutions. This is because of the cpu bottleneck.
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post #23 of 77
Quote:
Originally Posted by Lando95
This is because of the cpu bottleneck.
Do you think that with multi-cpu's this is as big a problem as has been previously stated though?

R
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post #24 of 77
Quote:
Originally Posted by Ropey
Do you think that with multi-cpu's this is as big a problem as has been previously stated though?

R
As of right now, yes it is. However, once the solftware developers start writing code that can fully utilize 2 or even 4 cores, then we will see some major increases in the graphics arena.
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post #25 of 77
Quote:
Originally Posted by Lando95
As of right now, yes it is. However, once the solftware developers start writing code that can fully utilize 2 or even 4 cores, then we will see some major increases in the graphics arena.
I'm not so sure. I think that the cpu is not as bottlenecked inasmuch as that at lower resolutions there is less work to do and thus the processor is not being taxed nearly as stringently as it is in higher resolutions.

My SLi setup has processor logged utilization quite low when I drop down to the lower resolutions but when I log F.E.A.R. on my 40" there is no doubt that it is working far harder.

R
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post #26 of 77
Quote:
Originally Posted by Lando95
Why is it junk? Why would it run like crap? Have you used them personally? Please don't say something is junk and crap if it isn't even on the market yet.

What you guys have to remember is that 2 video cards are already majorly cpu bound. We just don't have enough cpu power to utilize all 4 cards. If you are gaming anywhere around 1600x1200, you will not see an increase with 4 cards over 2. The only reason I could see to buy a pair of these is for 1.) extreme overclocking 2.) running insanely high resolutions on very large screens.
The reason that I say it'd run like crap is because such a tiny population of game manufacturers and game testers have ever been behind the keyboard of a system like that. You wanna talk about buggy? You can't keep a straight face and tell me with confidence that I could load 5 seperate games and not expect at least 1 game to have serious issues. No, I haven't played with a 4 gpu system, but look at the problems people have with just regular SLI and those have actually been tested pretty thoroughly. (by customers if nothing else)
BigVal, there's no way to take you up on that, but if there were a way, I'd bet that I could take 2 watercooled gpus and outperform the untested quad setup at nearly every resolution. Maybe I'm wrong, but it'd surprise me if I were. 4 thirsty gpus bogging down the cpu would be too much until you hit the highest resolutions on most monitors. Then, ya, maybe it'd have a chance if you has some serious graphics to render. I'd honestly rather have 2 watercooled gpus at higher clocks than the 4 most likely buggy ones. The clock increase with water versus those 4 heating each other up with stock coolers is a tradeoff I'd be willing to take.
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post #27 of 77
"There is a principle which is a bar against all information, which is proof against all arguments and which cannot fail to keep a man in everlasting ignorance - that principle is contempt prior to investigation."

R
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post #28 of 77
Quote:
Originally Posted by Ropey
"There is a principle which is a bar against all information, which is proof against all arguments and which cannot fail to keep a man in everlasting ignorance - that principle is contempt prior to investigation."

R
Yes,but you can look at the past as an indicator of the future. Look at every single computer "breakthrough" or new technology and it has been riddled with buggy or poor performance initially. SLI- buggy, dual core- buggy, X-Fi- buggy, new version of windows- buggy,Crossfire- buggy, etc etc. While I have 0 proof that a 4 card system would perform poorly, I know where my money would lay if it were paying even odds in Vegas. To me, this is no different than 10 6600gt cards in SLI. I'd much rather have 2 1900xtx with watercooling and that's my bottomline.
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post #29 of 77
Quote:
Originally Posted by Ropey
"There is a principle which is a bar against all information, which is proof against all arguments and which cannot fail to keep a man in everlasting ignorance - that principle is contempt prior to investigation."

R
Man, That is so worthy of a hotlinked "Owned" Image.
post #30 of 77
Quote:
Originally Posted by sccr64472
To me, this is no different than 10 6600gt cards in SLI. I'd much rather have 2 1900xtx with watercooling and that's my bottomline.
So your personal opinion has no bearing on quad SLI. No matter if you want it to happen or not, it's still going to happen. Just because you would rather two 1900xtx's watercooled over four say 7800gtx's on stock cooling, you'd still lose to the quad SLI. Even though the extra two cards wont make nearly as big of a bang as the second card does for SLI, it will still push that system beyond anything a two card system can hit unless the two card system is totally maxed out with dryice/ln2 on the gpus/cpu or something.
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