5970's still have low 2D clocks with latest drivers....

[snedie]

I have been trying for a couple days now to find a way to up the 2D clock speeds on my 5970's. I never noticed a problem with them in the past because the only time I would ever overclock is to mine on bitcoin, and as such the cards where always in 3D mode.

But now that I no longer do that I'd like to OC the cards again, but just for gaming. I was told in another forum that the 2D clock issue was fixed way back in the 10.xx drivers, however I still seem to have the issue.

To be more specific, of the four cores (2 on each card, obviously), only one (GPU 4) is clocking down to 2D mode, the rest stay at 3D clocks. I do not have CCC installed now, just the drivers along with MSI Afterburner, and I'm not even sure if XFire is working right now (I'll run heaven bench while I wait for a reply).

Last note, as soon as I attempt to apply an overclock to the 3D speeds, I get an instant lock-up. When I was mining I never had this issue and the cards ran at 980Mhz for over 2 months 24/7.

 

[snedie]

Heaven Benchmark v2.5 Basic

FPS:	
115.0
Scores:	
2897
Min FPS:	
11.2
Max FPS:	
287.8
Hardware

Binary:	
Windows 32bit Visual C++ 1600 Release Mar 1 2011
Operating system:	
Windows 7 (build 7600) 64bit
CPU model:	
Intel(R) Core(TM) i5 CPU 750 @ 2.67GHz
CPU flags:	
3810MHz MMX SSE SSE2 SSE3 SSSE3 SSE41 SSE42 HTT
GPU model:	
ATI Radeon HD 5900 Series 8.892.0.0 QuadFireX 1024Mb

 

[snedie]

As you can see the cards are perfectly stable under normal clocks and will complete run after run of Heaven all day long. As soon as I try apply an overclock though those 2D clock speeds really mess things up: the system will either crash on the desktop randomly, or as soon as I load ANY 3D application I will also get a crash as the cards try apply the overclock (can be just 1Mhz and still crash).

 

[snedie]

5760x1080 bench:

FPS:	
42.5
Scores:	
1070
Min FPS:	
12.8
Max FPS:	
92.7

 

[snedie]

No help then?

 

[Macro]

I have the same problem with my 5970. As soon as i overclock, the 2D speeds drop to 157/300 (from the normal 400/1000) which is too low to maintain dual displays leading to screen flicker.

I don't think there's a fix, people have had the problem since the 5870 came out one way or another. There was a work around using profiles on older catalyst version but not sure there it works now.

 

[snedie]

I have the same problem with my 5970. As soon as i overclock, the 2D speeds drop to 157/300 (from the normal 400/1000) which is too low to maintain dual displays leading to screen flicker.

I don't think there's a fix, people have had the problem since the 5870 came out one way or another. There was a work around using profiles on older catalyst version but not sure there it works now.

Can confirm profiles (AKA Presets in latest CCC) do not work any more, it will try to clock at what every you set the values too but the card just goes skitzo.

Also tried disabling ULPS *Ultra Low power state* in the registry, but that had zero affect too.

 

[twist3d0n3]

the most recent driver i found that didn't **** up my flicker on my 5970/5870 combo was the 10.10e's :/

tbh i'm learning to ignore the flicker, but it is ****ing annoying!

 

[jak731]

Flash with a custom bios perhaps?

 

[ethos]

Flash with a custom bios perhaps?

This.

I've flashed my 5970 with the latest bios version but edited it with RBE. I was getting similar issues with dual screens and flickering, so raised the 157/300 profile to something more realistic.