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post #21 of 23
Quote:
Originally Posted by RPIJG View Post
x8/x8 probably still wouldn't cause any issues with the PCIe bandwidth, I don't believe that the GT at full tilt would be restricted by the lessened bandwidth at all since it doesn't really come close to need the x16.
GeForce 8 is a lot more demanding on PCI-e bandwidth.
while the real world difference is negligible for x1900 and 7900 this is not the case with the 8800s, it's actually tangible.

still not an extreme difference but something to point out.

scaling from 16x PCI-e to 9x PCI-e on an 8800 is worse than scaling from 16x PCI-e to 4x PCI-e on a x1900.
http://www.tomshardware.com/2007/03/...sis/page8.html

that's on the whole though. I'm not particularly sure of crysis in and of itself though, and for such a thing I'd hate to make an absolute claim.
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post #22 of 23
I'm not about to get crazy with my response here because I have other things to do, but I'm pretty sure with a little research you'd find that the bandwidth of these cards isn't near the bandwidth of the 16 PCI-E lanes, any "reduction" has to be from the card identifying that it is on a lower bandwidth and scaling based on the drivers because from an electronic standpoint they can't fill the bandwidth at x16.
    
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post #23 of 23
Quote:
Originally Posted by RPIJG View Post
I'm not about to get crazy with my response here because I have other things to do, but I'm pretty sure with a little research you'd find that the bandwidth of these cards isn't near the bandwidth of the 16 PCI-E lanes, any "reduction" has to be from the card identifying that it is on a lower bandwidth and scaling based on the drivers because from an electronic standpoint they can't fill the bandwidth at x16.
depends on the type of load on the card(s). in some cases it's true in others it isn't.

for crysis, I personally have no idea and I'm too lazy to tape off my 8800GTS just for comparison's sake.
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