When it comes to crossfire does PCIE3 vs 2 make a difference?

Tim Downey · Jul 23, 2014

Hi,
I have a i7-2600 that only supports PCIE2.0, I have 2 x Sapphire R9 290 cards crossfired. Would it make any changed to overall FPS etc if they were supported by PCIE3.0 ?

Thanks

Danbuscus25 · Jul 23, 2014

unknownofprob · Jul 23, 2014

if the board supports Crossfire and runs multiple-GPU's at either X8/X8, X16/X8 or X16/X16 then your set. The PCI-E 3 will only be beneficial for cards way down the track, when the bandwidth is far greater then any current day card.

dj1997 · Jul 23, 2014

it wont benefit you but for people running quadfire (4 individual cards) the cards will be running at x4
pci-e 3.0 offers higher bandwidth thus helps in these situations

manofchalk · Jul 23, 2014

Only if your looking at running a card in a 4x slot, which is a bad idea anyway.

dj1997 · Jul 23, 2014

manofchalk :

Cpu only has 16 lanes so if you're running 4 cards you can't avoid it my point is for enthusiasts that insist on running four cards it helps them

oxiide · Jul 23, 2014

PCIe 3.0 8x/8x is as fast as PCIe 2.0 16x/16x. I doubt it makes much of a difference though, as I still don't think you're limited by PCIe bandwidth.

manofchalk · Jul 23, 2014

dj1997 :

Mobo manufacturers can implement PLX switches which gives more lanes (the mechanics of which I'm not too sure on though) and would allow tri/quad Crossfire/SLI on a mainstream Intel board (Intel X79 and AMD platforms have 16x each lane).

For instance this board.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130689&cm_re=Quad_SLI-_-13-130-689-_-Product

Search

When it comes to crossfire does PCIE3 vs 2 make a difference?

Tim Downey

Reputable

manofchalk

Danbuscus25

Dignified

unknownofprob

Illustrious

dj1997

Distinguished

manofchalk

Glorious

dj1997

Distinguished

oxiide

Distinguished

manofchalk

Glorious

TRENDING THREADS

Latest posts

Moderators online

Share this page