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pgamble

NF4 PCI-E 2.0 Compatiblity issues

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I was wondering the same thing about my RDX200 in combination with 2 HD3870s I've got coming next week: has anybody had any luck running either SLI or CF setups with PCI-E 2.0 graphics cards on a PCI-E 1.0a board?

 

I guess experience is the only thing that can tell for sure if it will work as sources on the internet are contradicting eachother about this matter...

 

thanks!

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As has been said, it should work fine. Just make shure you put it in the top pci-e slot, as that will give you the full x16.

 

Except a lot of people won't be able to run it in the Top slot, the card is so long it blocks the first two SATA ports

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Hi guys

 

Asus was delayed so I got the above instead.

It's 675Mhz instead of 700.

 

Machine is now SLI-DR + 2GB OCZ + OCZ 700Watt + FX-60 with this card.

 

 

3dMark 05 is 14400 and 3d Mark 06 is 9641.

 

All seems to be running fine.

 

Can you let me know how these figures compare as it's a long time since I looked gfx performance.

 

All ready for Crysis this xmas.

 

cheers

 

Paul

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Would there be any underclocking for the GPU if you plug a PCIE 2.0 card into a PCIE 1.0 or 1.1 board? i guess im trying to (yet again) confirm if an 8800 would work on a DFI LanParty Expert motherboard in single mode (not SLI)

 

from what i gather a PCIE 2.0 gfx card uses all 16 lanes of traffic, wouldnt you hinder performance using PCIE 2.0 cards in SLI on a PCIE 1.0/1.1 motherboard? would it cut them both down to 8x and thus underclock the GPUs to half speed and render the SLI no more powerful than a single?

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I don't believe so but I have an expert and an 8800gts 512 on the way, when I get it I can run some tests compared to my c2d rig. Hopefully you get your answer before that though.

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Would there be any underclocking for the GPU if you plug a PCIE 2.0 card into a PCIE 1.0 or 1.1 board? i guess im trying to (yet again) confirm if an 8800 would work on a DFI LanParty Expert motherboard in single mode (not SLI)

 

from what i gather a PCIE 2.0 gfx card uses all 16 lanes of traffic, wouldnt you hinder performance using PCIE 2.0 cards in SLI on a PCIE 1.0/1.1 motherboard? would it cut them both down to 8x and thus underclock the GPUs to half speed and render the SLI no more powerful than a single?

 

As has been re-iterated numerous times around here,current PCI-e 2.0 cards are fully backwards compatible with PCI-e 1.x motherboards. In fact most if not all currently available graphics cards don't even fully saturate x8 bandwidth; so here wouldn't be any real world difference between running it in an x8 vs x16 slot, only difference might be in benchmarks.

 

The PCI-e 2.0 standard is basically a form of future-proofing to be sure that the new motherboards being released will be compatible with graphics hardware that' further down the road.

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I'm currently running 2 EVGA 8800GT KO's in SLI on a DFI NF4 SLI D. They work, they smoke my prior single 7900GT KO. In comparison to a EVGA 680i board and Intel CPU, of course it would be better, but.. it is what it is. I can play Crysis on all high (objects on medium) just fine. A single card is just as close in fps, but with more swing in framerates at times. It works, 1st slot 2nd slot, single card. And as well as 2 cards in SLI. If one is completely worried about benchmarks, then build a new system. Otherwise, I'm telling you it's more than fine. You won't be disappointed unless you are hung up on comparing, not actually playing!:nod:

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