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GTX470 915mhz OC Versus GTX580 stock clocks?

post #1 of 118
Thread Starter 
If I'm at 915 core stable on a gtx470 I'm theoretically faster than a gtx580 right? redface.gif
    
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post #2 of 118
Should be almost on par, definitely very close but I doubt it's faster.
post #3 of 118
i wont say so
post #4 of 118
Quote:
Originally Posted by Wulfgar;14487351 
Should be almost on par, definitely very close but I doubt it's faster.

Yeah, I'm guessing this as well.
It's also hard to compare them as some things react better to higher clock speeds than extra cores and others don't.
The extra Vram on the 580 means the 580 will easily beat it if you're running out of memory on the 470.
That said, I would guess a 470 at 915MHz should perform close to the 580 in most things.
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post #5 of 118
Sorry, but not really. 448 processor cores VS 512..... Overclock or not, you can't magically get those 64 cores.

If it was that easy to get the GTX 580 performance, nobody would pay 450-500$ for a GTX 580.
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post #6 of 118
GTX 470 @ 915 core

Pixel Fillrate: 36.6G

Texel Fillrate: 51.2G

GTX 580 @ stock

Pixel Fillrate: 37.1G

Texel Fillrate: 49.4G



Aside from the fact that the GTX 580 has more bandwidth and VRAM, the GTX 580 would still be faster theoretically.

EDIT:

Quote:
Originally Posted by Grindhouse;14487422 
Sorry, but not really. 448 processor cores VS 512..... Overclock or not, you can't magically get those 64 cores.

If it was that easy to get the GTX 580 performance, nobody would pay 450-500$ for a GTX 580.

With the extra clock cycles, the fixed function hardware can perform more operations so yes you could make up for the missing 64 CUDA cores, 8 ROPs and 8 TMUs. However the GF110 chip is somewhat more refined so you'll miss out on some extras. Also it has to be said that 915 core on a GTX 470 is pretty uncommon if not rare wink.gif
Edited by TheBlademaster01 - 8/6/11 at 11:23am
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post #7 of 118
Quote:
Originally Posted by Grindhouse;14487422 
Sorry, but not really. 448 processor cores VS 512..... Overclock or not, you can't magically get those 64 cores.

If it was that easy to get the GTX 580 performance, nobody would pay 450-500$ for a GTX 580.

772*512=395264
915*448=409920

Assuming the same architecture they should do about the same amount of work if you don't take VRAM into account.
That also assumes linear scaling of performance with core count and frequency.

Also, people can OC their 580s too and anyone OCing a 470 would also overclock the 580 if they had it so people would still buy them.
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post #8 of 118
Thread Starter 
So it's about the equivalent so long as vram is out of the equation. So it should be equivalent in most 1080p games or less. I'm faster than a 6970, gtx480, gtx560, and gtx570 at stock clocks I suppose.
Edited by BigCactus - 8/6/11 at 12:27pm
    
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post #9 of 118
na, 580 destroys the overclocked 470. Since 470 and 560 ti are similar in performance.

The only "proper" versus match would be an OC'd 570 vs stock 580. And you would need to be around 850 to 875 core on the 570 to match the 580 stock speeds.

I wouldn't bother OC'ing to 915. Either get it stable at 950 or lower the votlage down to keep it around 875/900. The fps gains are only around 2-3 fps in Physx and some-what demanding games.
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post #10 of 118
Quote:
Originally Posted by HomeDepoSniper;14488151 
na, 580 destroys the overclocked 470. Since 470 and 560 ti are similar in performance.

The only "proper" versus match would be an OC'd 570 vs stock 580. And you would need to be around 850 to 875 core on the 570 to match the 580 stock speeds.

I wouldn't bother OC'ing to 915. Either get it stable at 950 or lower the votlage down to keep it around 875/900. The fps gains are only around 2-3 fps in Physx and some-what demanding games.

The GTX 470 and 560 Ti are similar on their stock clocks. With both at the same clocks the GTX 470 is much faster than the GTX 560 Ti.
    
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