Radeon 7970 on a PCIe 2.0 socket...

[p4n4m4]

Is it worth it to put a 3.0 PCIe Graphic card on a motherboard with 2.0 PCIe socket?

Im talking about this "XFX Radeon HD 7970 " on my ASUS Rampage III Extreme Republic of Gamers...

Or will the 2.0 PCIe just slow down 50% or so of my graphic card performance?

 

[inzone]

It certianly won't slow down 50% but you just won't get the full performance of the card since it was designed for the Pci-e 3.0. You will see a very good performance increase over what you have now for sure.
What card do you have now?

 

[p4n4m4]

It certianly won't slow down 50% but you just won't get the full performance of the card since it was designed for the Pci-e 3.0. You will see a very good performance increase over what you have now for sure.
What card do you have now?

I Have a Radeon HD5970

And I want to buy 2x *Radeon 7970" so im ready for the big game DIABLO3 i may

I have also considderred to buy another HD5970 if the 7970 solution wasnt worth it, and make a crossfire but the two graphic cards cost the same... almost $800 in the danish stores

 

[sephirothmk]

HD7970 will work on PCI-E 2.0 with full power.

However, you can max out Diablo 3 even on a single HD6850. Why would you need 2 of the most expensive graphic cards to do it? Unless you're a troll that just wants attention.

 

[p4n4m4]

HD7970 will work on PCI-E 2.0 with full power.

However, you can max out Diablo 3 even on a single HD6850. Why would you need 2 of the most expensive graphic cards to do it? Unless you're a troll that just wants attention.

hehe you got a point! Im just affraid of lagg in diablo3 after i tryed laggy game "Rage" on my computer with:

4.2 Ghz Cpu
16 GB Ram
HD5970 Graphic card

hehe but I will listen to you and only buy one thx for advice...

 

[maxinexus]

Not even 2 7970 can saturate PCIe 16. The performance difference between 2x8 and 2x16 does not exists (maybe less than 1%)
http://hardocp.com/article/2010/08/23/gtx_480_sli_pcie_bandwidth_perf_x16x16_vs_x8x8/

same can be said about PCIe 3.0 and 2.1 or 2.0

 

[kitsunestarwind]

D3 is pretty much not going to lag anyone's PC if they have something even moderate.
The game doesn't require much power at all to max out.

 

[p4n4m4]

Ok perheps I cant see any difference in Diablo3 with one or two 7970 cards , and its only for benchmarking runs atm ... but I can avoid Lagg in games in the next 3-4 years ... instead of 1-2 years when the new games arrives...

when i bought my HD5970 it was the newest on the marked and 2 years later it sucked playing the game "Rage" ... and those new games

 

[p4n4m4]

Best answer selected by p4n4m4.