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Will a SLI/CF cause problems while using a discrete PCI Express sound card on an i7 2600 K?

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November 30, 2013 4:11:42 PM

Hello everyone,

I have an i7 2600 K on an ASrock P67 Extreme 4. Had a CF of HD6950 2GB but then I sold one and took an Asus Xonar D2X, which is a PCI Express 1x soundcard. Now I'm looking for a GTX 770 and waiting for a G-sync monitor (Asus VG248QE was my first guess).

I am trying to figure this out:

Will an 8x/8x Crossfire/SLI be limited or start problems with/to my discrete soundcard?

Thank you! :D 
a b V Motherboard
November 30, 2013 4:14:31 PM

It should not cause a problem but i would upgrade to a r9 290 or 290x when aftermarket cards come out since Mantle will be a larger change to gaming than gsync.
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November 30, 2013 5:01:29 PM

mauller07 said:
It should not cause a problem but i would upgrade to a r9 290 or 290x when aftermarket cards come out since Mantle will be a larger change to gaming than gsync.


Lower level control is nice but gpu controlled scan is completely new. Fixed scan frequency should be abandoned since we are supporting it only because it's a CRT/TV legacy. A gpu controlled scan doesn't even require that much processing power since it "theoretically" never miss a scan and gives you minimum input latency.
The R9 290 is in my budget range, yet I really can't make my mind over it as the reference cooler did a mess and worst than ever AMD distributed good GPUs to reviewers and the retail ones are completely different.

I got time to figure all this out since I won't start buying until the monitor comes out. Anyway I'm in for a 144Hz monitor. I played on the VG248QE last month in a PC store, and loved it. High resolutions, 4K and triple monitor (with idiot bezels)? No, thanks. I liked the responsiveness a lot and the chance to miss a scan are halved (screen tearing less visible). I got a Samsung Syncmaster P2450H on VESA wall mount so I need the same lenght and wall mount to replace it. It a wonderful monitor anyway, it will be hard to give it away to my father :D 
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a b V Motherboard
November 30, 2013 5:42:34 PM

With gsync it will only make the screen appear smoother and cost you 100 on top of an already expensive monitor but if the fps is low it will still feel laggy even if it looks smooth.

Nvidia also used worse case scenarios to demonstrate gsync, some of the problems which mantle help alleviate, with triple buffering forced and frame locked at 59 fps vsync I never get tearing and stuttering like nvidia displayed in the majority of games I have.

Mantle is free and provides massive benefits compared to gsync, its a thin hardware abstraction and not direct to hardware so allows in future nvidia the ability to make a driver if they choose to support it which they would be wise to.

Wait for the bf4 mantle release by end of december and see before deciding on what to get as a lot of games next year will be supporting mantle.

The r290 problem was driver related and to do with the crap cooling, people who have custom air and water cooled them have gotten far better performance than the hardware site reviews at stock, even the press release cards.
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November 30, 2013 11:43:28 PM

mauller07 said:
With gsync it will only make the screen appear smoother and cost you 100 on top of an already expensive monitor but if the fps is low it will still feel laggy even if it looks smooth.

Nvidia also used worse case scenarios to demonstrate gsync, some of the problems which mantle help alleviate, with triple buffering forced and frame locked at 59 fps vsync I never get tearing and stuttering like nvidia displayed in the majority of games I have.

Mantle is free and provides massive benefits compared to gsync, its a thin hardware abstraction and not direct to hardware so allows in future nvidia the ability to make a driver if they choose to support it which they would be wise to.

Wait for the bf4 mantle release by end of december and see before deciding on what to get as a lot of games next year will be supporting mantle.

The r290 problem was driver related and to do with the crap cooling, people who have custom air and water cooled them have gotten far better performance than the hardware site reviews at stock, even the press release cards.

I see your point.
But I prefer responsiveness. I like the G-sync but I'm not an Nvidia fan.
Enough OT anyway :D 
So my i7 2600K got enough PCI Ex lines to run a SLI/CF and my discrete card without losing performance? I am more worried about the audio than the graphics, surely I can live with a single GPU. Just wondering what I can do.
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a b V Motherboard
December 1, 2013 3:47:37 AM

yeah it should be fine with crossfire or sli, most gpu's only use up to 8x8 and the soundcard will barely use all the bandwith of a x1 lane anyway.

if you love audio then some of the new amd gpu's have a sound processing chip on them that devs can use to make far more realistic 3D audio (only in the r9 290/x and r7 260 atm) called true audio.

with mantle multi gpu setups should work a lot better since the dev can equally split the work between the gpu's all while using a lot less cpu from 40% overhead to 8% some devs have said.

best to wait and see still, with mantle, custom cooling and clocked to 1ghz like the press release cards the r9 290 should be comparable or even beat a 780 ti while not having any of the problems directx causes so should give far more responsive and smoother gameplay.
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