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[H]Fall 2012 GPU and Driver Comparison Roundup

Lack of vRAM seems a reasonable argument to me.

Has anyone been able to find a review at that resolution with the 4GB card, seems strange to me that such a review would not exist
 
TheRealDeal said:
Looks pretty equal on single cards if you ask me considering your gtx680 was a nice clocker. So i am not really wrong as lower and higher clocking cards would most likely determine which card was faster in the bench.

i.e a 7970 at 1300 would be faster than yours and greg's really high clocking lightning would be faster again.

Another thing those results were done on the 9th of september before the release of 12.11 as you know things have changed.
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Well you were wrong based on what you initially said. nVidia's drivers improve as well.

Clock for clock isn't a like for like comparison other than just that - a clock for clock comparison.

humbug said:
Lack of vRAM seems a reasonable argument to me.

Has anyone been able to find a review at that resolution with the 4GB card, seems strange to me that such a review would not exist
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The extra VRAM only helps if you're running out of it. I only ever ran out of it once in MoH:WF and I'm not entirely convinced it was a 'true' run out because HBAO was using around 500MB of VRAM on its own which was crazy compared to BF3. Perhaps something they'll resolve in a later game code drop... or perhaps not. It looked strange to me but c'est la vie!

So while it's valid to bring it up, it wasn't the reason for the lacklustre nVidia performance. The 256 bit bus is the prime candidate for that.
 
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Oh actually another thing - the extra VRAM is actually a hindrance if you could 'get away' with 2GB and you'll actually get marginally worse performance due to the slacker memory timings on the VRAM.

I think I said when I originally did my 680 results that there wasn't any VRAM related slowdowns in any of the games I benched.

Edit: found it -

Rusty0611 said:
A couple of games do run close but I have no intention of playing them at the FPS they give. I didn't actually run out of VRAM once in my testing. Metro 2033 on maximum settings was the closest but the MSAA VRAM requirement on its own is around 1GB which is quite frankly completely absurd. I have no idea why it is so high in that game.
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Accepted ^^^^, i just wondered if perhaps data was being diverted to system RAM, which may cause a speed bottleneck.

Its rare for it to just say "nah, its full and that yer lot, goodbye" it gets moved around if the buffer is full.
 
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