Very poor HD7990 performance

zipper_redwood · 8 Oct 2013 at 00:45

Hi everyone,

I'm struggling to get any sort of performance from my HD7990. I was playing Hitman today and I was averaging 22 fps!!

Do I need to have certain settings changed in catalyst or is my card buggered?

Phixsator · 8 Oct 2013 at 00:53

Going on the basis that your system is clean and with no virus or malware or anything of that sort here is what you do.

1)Uninstall your catalyst driver completely including everything in it(HDMI driver, Display Driver, CCC and whatnot).

2)Restart

3)Download and install catalyst 13.10 Beta2

4)Disable ULPS (MSI afterburner or Sapphire Trixx can do this and you can do it manually through Regedit)

5)Restart and Enjoy

If the problem persists then it is not a driver issue and we would need if a lot more info to go on.

zipper_redwood · 10 Oct 2013 at 12:51

Apologies for the late reply. Work has been crazy

So I tried all of the above and with everything on max i still drop to around 20fps.

Should my 7990 be able to run this with MSAA x8 ?

LtMatt · 10 Oct 2013 at 12:55

Take a look at this thread.

Post some screenshots showing your gpu overlays when running the game.

VincentHanna · 10 Oct 2013 at 13:43

There's something wrong there, especially as your monitor is 1080p.

I get much higher performance than that with a 6870.

Edit - I don't use 8x MSAA though, that seems pointless.

But on a 7990 I probably would.

LtMatt · 10 Oct 2013 at 16:32

Hitman is a bit cpu limited i find, especially at low res like 1080p. Overclocking your cpu to 4.5ghz will help with that.

Choimaloy75 · 10 Oct 2013 at 21:29

I'm having the same problem with f1 2013 I'm getting an average of 71 fps and can't understand it.

Hades · 10 Oct 2013 at 22:38

Choimaloy75 said:
I'm having the same problem with f1 2013 I'm getting an average of 71 fps and can't understand it.

F1 doesn't like Crossfire or SLI. There is a thread on here somewhere about it. You can setup a profile to disable crossfire for just that game and apparently the fps is higher on just one gpu.

eddyhall · 10 Oct 2013 at 22:44

Is this problem present in non-GPU actions, like Excel, or with other GPU intensive activities, like a different game?

=XDC=FluphyBunny · 10 Oct 2013 at 23:28

What other games do you play and are they running ok. What about 3d mark results, how do they compare?

Choimaloy75 · 11 Oct 2013 at 07:10

I disabled one of the gpus and and got 81 fps average.in 3d mark 11 the graphics score was 17532 I think.

ikari1 · 11 Oct 2013 at 22:57

How do you turn 1 GPU off please? I want to try it to solve a microstuttering problem.

ikari1 · 12 Oct 2013 at 14:48

Anyone?

LtMatt · 12 Oct 2013 at 14:49

ikari1 said:
How do you turn 1 GPU off please? I want to try it to solve a microstuttering problem.

What game and what drivers are you using?

Kaapstad · 12 Oct 2013 at 15:49

Nevermind.

Choimaloy75 · 12 Oct 2013 at 15:59

You can disable crossfire with the 7990, but you need to create a profile for the game.

Open CCC, select the 'Gaming' tab then '3D Applications Settings', click on 'Add' then select the .exe that launches your game, click the 'Open' tab at the bottom and that'll add the profile to CCC, now click on the profile and scroll down to the bottom of the screen where the Crossfire options are and you will now have the option to disable crossfire. Click 'Save' and voila, next time you run the game it'll only use 1 GPU. You can double check this when the game is running, you should have a green light on the back of the card lit up next to the 2nd GPU.

EDIT: Also if you want to go back to xfire, just click on the profile again and select 'Default' and make sure frame pacing is on. Or if you've finished with it just delete it.

Hope that helps

ikari1 · 12 Oct 2013 at 16:53

Many thanks! I've moved over from Nvidia so I'm still learning..... The problem is with BF3. It's fine with Windows 7 but on my newly installed Windows 8 64 it isn't as smooth.

LtMatt · 12 Oct 2013 at 17:10

ikari1 said:
Many thanks! I've moved over from Nvidia so I'm still learning..... The problem is with BF3. It's fine with Windows 7 but on my newly installed Windows 8 64 it isn't as smooth.

What drivers are you using?

ikari1 · 12 Oct 2013 at 17:17

13.11 b1. I've turned one GPU off and now it's a lot smoother.

Thanks!

LtMatt · 12 Oct 2013 at 17:33

ikari1 said:
13.11 b1. I've turned one GPU off and now it's a lot smoother.

Thanks!

Do you have frame pacing enabled in BF3? Do you have hyper threading enabled in your bios? Because its not normal to have microstutter in bf3 with crossfire these days. BF3 is one of the smoothest games i have played. (RIP uninstalled now for BF4) I'm also using windows 8, though not 8.1 but i wouldn't have thought there would be a difference.