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MOBO's that can run two GPU's at 16x speed are out!!


Guest xSubo

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Guest xSubo
gigabyte G1 Sniper Series is beast, check it out; this will be a huge upgrade if anyone is thinkin ARMA 3 is going to be the next rig killer
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Guest EPiiKK
From what i've heard, the actual difference with 2x x16 and 2x x8 is very vey minimal, not worth very expensive mobo. dont quote me on that tho... :)
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Guest MAJ.Kaossilator=US=
From what i've heard, the actual difference with 2x x16 and 2x x8 is very vey minimal, not worth very expensive mobo. dont quote me on that tho... :)

 

Exactly right. You are guaranteed to have other bottlenecks before the PCIe bandwidth is an issue.

 

Don't take my word for it... slightly older studies, not in the 5xx or 6xx Nvidia series, but still applies just the same since it's all still pushing through the same pipe.

 

SLI & CFX PCIe Bandwidth Perf. - x16/x16 vs. x16/x8

http://hardocp.com/article/2010/08/16/sli_cfx_pcie_bandwidth_perf_x16x16_vs_x16x8/6

 

GTX 480 SLI PCIe Bandwidth Perf. - x16/x16 vs. x8/x8

http://hardocp.com/article/2010/08/23/gtx_480_sli_pcie_bandwidth_perf_x16x16_vs_x8x8/3

 

GTX 480 SLI PCIe Bandwidth Perf. - x16/x16 vs. x4/x4

http://www.hardocp.com/article/2010/08/25/gtx_480_sli_pcie_bandwidth_perf_x16x16_vs_x4x4/

 

You have to really be pushing your GPU's at very high res to see any difference at all between 16x/16x vs 16x/8x, let alone 8x/8x, and even then it's not too noticeable until you hit those super high resolutions + max settings. I suppose in theory you might start to see an FPS drop at high resolution with everything maxed, but given other bottlenecks, you can't run at those crazy high res with everything on max, so there's no practical cost to going 16x/8x. Even in testing it's hard to get a legit test run because you can't even play a game with a reasonable FPS at max settings+super high res because the GPU's bottleneck before the PCIe.

 

Bottom line: if it's a $$ difference between 2 mobos to get 16x/16x, don't bother. If $$ is no issue... bragging rights??

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Guest MAJ.Kaossilator=US=
i got slammed

 

Haha you didn't get slammed unless you bought the mobo for a lot more $$ than another one (equal quality) without 16x/16x... did you get slammed Subo?? :p :p

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Guest MAJ.Kaossilator=US=
And just be glad Decayed didn't post on this... it would have been a wall of text about why it does/doesn't make a difference lol :p
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