Crossfire on = input lag?

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Eyalcsgo
Posts: 9
Joined: 25 Dec 2014, 21:18

Crossfire on = input lag?

Post by Eyalcsgo » 27 Dec 2014, 17:41

is this true that setting crossfire on my 295x2 will give me some input lag?

Sparky
Posts: 682
Joined: 15 Jan 2014, 02:29

Re: Crossfire on = input lag?

Post by Sparky » 28 Dec 2014, 01:59

Eyalcsgo wrote:is this true that setting crossfire on my 295x2 will give me some input lag?
Hypothetically(with perfect scaling), the input lag doesn't significantly change from a single GPU at the same settings, but you have way more input lag than a single GPU at the same framerate, because of AFR.

Also, is that 2x or 4x crossfire? the 295 is a dual GPU card.

If you prioritize input lag over looking pretty, crossfire/sli is a bad idea.

flood
Posts: 929
Joined: 21 Dec 2013, 01:25

Re: Crossfire on = input lag?

Post by flood » 28 Dec 2014, 11:37

probably yes, due to afr and various framerate stabilizing crap associated with sli/crossfire

if you can run csgo >200fps without crossfire then dont use it

PoWn3d_0704
Posts: 111
Joined: 31 Dec 2013, 15:20

Re: Crossfire on = input lag?

Post by PoWn3d_0704 » 30 Dec 2014, 11:34

I've found EVERY game to be more responsive with a single card.

I had SLI 670's and I technically downgraded to a 780Ti to avoid SLI issues and weird lag.
Asus VG248QE with GSync. Blur Busters GSync Contest Winner.

avrion
Posts: 10
Joined: 26 Jan 2015, 12:24

Re: Crossfire on = input lag?

Post by avrion » 26 Feb 2015, 19:41

Does anybody know if mantle/dx12 will help reduce input lag?
I'm currently using mantle in bf4 with a 7990 and it feels very responsive at 100-120fps (no vsync, 1000hz mouse), can't really compare it with dx11 since i'm getting lower fps with it.

flood
Posts: 929
Joined: 21 Dec 2013, 01:25

Re: Crossfire on = input lag?

Post by flood » 26 Feb 2015, 21:13

input lag is 5% magic and 95% fps dependent

actually that 5% is probably an overestimate

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fenderjaguar
Posts: 168
Joined: 19 Apr 2014, 11:57

Re: Crossfire on = input lag?

Post by fenderjaguar » 27 Feb 2015, 12:51

avrion wrote:can't really compare it with dx11 since i'm getting lower fps with it.
Cap both at a frame rate you never drop under, then compare.

Of course it will feel there is less input lag with higher frame rate...

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