X8 vs x16

[Shadow_Storm56]

So I have the ability to run 2 sli cards in x16 x16 but it will not work with my 2 970s. they run at x8. is this much of aN issue? I see videos showing a small improvement between the two but like.... is it worth my time to buy a longer bridge and try and also figure why the cards won't do sli in x16? or just forget it and do run x8

[WereCat]

No issue. 8x is way more than you need.

[Narnash]

nope it's not worth it!

 

x8 PCI3 3.0 shouldn't bottleneck a GTX 970 SLI setup at all. It is more likely that the kind of bridge used in the videos you've seen affect the performance a little little bit.

[Shadow_Storm56]

Good cause I have a nice led high quality bridge for this setup. thanks guys 

[Clanscorpia]

Its completely fine, Linus did a video on it and his Titan X at 4x didnt change in performance

[Gonio]

PCIe hasn't been a bottleneck for a very long time, and will not be also. Running 8x is good enough and IF (what isn't always the case but actually reverse sometimes) it gets better it's so marginally that you won't notice it.