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Kepler with PCIe 2.0?

post #1 of 18
Thread Starter 
Just picked up a board with the 2.0 and not the 3.0.. Heard Kepler uses 3.0? What will the difference be??
post #2 of 18
Well... what you picked up was a Fermi, not Kepler. Kepler isn't out yet.
post #3 of 18
Doesn't make any difference anyway. There is like 3% performance delta and this difference can be due to a lot of thing.
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post #4 of 18
Don't worry, it won't be incompatible or anything like that. The only difference is that a 3.0 slot has roughly twice the bandwidth of a 2.0 slot, but many tests indicate that even an overclocked 7970 can't come close to completely saturating a PCIe 2.0 slot at x16. With multiple cards at x8, I think there's a small bottleneck, but it's pretty insignificant.

At any rate, I wouldn't expect Nvidia's Kepler cards to be much different. You wouldn't be in any danger of a bottleneck until you went SLI, and even then it's not bad enough to warrant dropping your current board just to get a GEN 3.
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post #5 of 18
Thread Starter 
lol!

The card I currently have is a Fermi correct.. What I want to replace it with is a Kepler that isnt out yet.. Also correct..

What I meant by me picking up a board was a mother board..

ASUS P8P67 PRO Rev-3.0 Intel LGA1155 <-- To be exact

I was wondering what the difference would be running a kepler card on the P8P67 which is a PCI-e 2.0 instead of running it on a PCI-e 3.0 board which I heard the Kepler Utilizes..
post #6 of 18
If the GPU you just picked up was the 570, nothing. We don't know if Kepler is going to saturate a x16 PCIE 2.0 interface but a 7970 doesn't benefit from using PCIE 3.0.
post #7 of 18
Quote:
Originally Posted by JMattes View Post

lol!
The card I currently have is a Fermi correct.. What I want to replace it with is a Kepler that isnt out yet.. Also correct..
What I meant by me picking up a board was a mother board..
ASUS P8P67 PRO Rev-3.0 Intel LGA1155 <-- To be exact
I was wondering what the difference would be running a kepler card on the P8P67 which is a PCI-e 2.0 instead of running it on a PCI-e 3.0 board which I heard the Kepler Utilizes..

PCI-e 3.0 is retro-compatible with other PCI-e version.

Just don't upgrade only for PCI-e 3... what a waste of money. Better buy a second video card, the performance improve will be 1000x greater than running on PCI-e 3.
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post #8 of 18
Linus from ncix once did a video with a 6990 in a x4 lane. There was a minimal performance hit. I don't imagine that 7970 or kepler for that matter will even come close to saturating x16, let alone x8.

http://www.youtube.com/watch?v=rSfifE2Domo
Edited by daydream99 - 2/12/12 at 7:00pm
    
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post #9 of 18
Thread Starter 
I mean I have my sig rig set up already. Which the Mobo is Gen3 with all the great bells and whistles.. However, I want to start working together a Dedi Fold rig and got the ASUS P8P67 PRO Rev-3.0 Intel LGA1155 for $75 off ebay. It doesnt have an onboard video like my Gen3, so I was thinking about using the Gen3 for Folding since I wont need a video card. Then switch everything over to the board I just bought (P8P67) as my gaming rig..and upgrading the 570 to a Kepler when it comes out.. Just wondered if the Kepler on the P8P67 would be ok..
post #10 of 18
Wait.. so you're using the onboard GPU for folding confused.gif
    
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