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6950 Unlocked and OC Issues with Power Controle and MSI After Burner

post #1 of 32
Thread Starter 
I recently got a 6950 2GB from AMD. I have successfully unlocked the shaders only with a modded bios. I overclocked to the stock 6970 clocks with MSI AB and tested it fine.

The issue is that I can't change Power Control in Catalyst Control without lowering it to AMD's safe clocks. If I try to reset the clocks back up in MSI AB, it resets the Power Control back to 0% instead of 20%.

Anyone encounter these issues or know of a way to help? Thanks.
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Tiger Lily 2.0
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post #2 of 32
Get the latest beta version AB, this will allow you to change voltage using AB instead of CCC. However you will have to enable "unofficial overclcoking", here's how to do it http://forums.guru3d.com/showthread.php?t=338906
post #3 of 32
dont use CCC and AB together... just disable or lock the OC function in CCC so you dont have any weird issues with it messing up AB while its running..
post #4 of 32
Thread Starter 
Quote:
Originally Posted by hirolla888 View Post
Get the latest beta version AB, this will allow you to change voltage using AB instead of CCC. However you will have to enable "unofficial overclcoking", here's how to do it http://forums.guru3d.com/showthread.php?t=338906
I have already done this. I did this to start of. Changing the voltages doesn't help. I need power control to be 20%. From what I've read/been told, AMD throttles the voltages so that I won't notice a difference in performance.

Quote:
Originally Posted by CL3P20 View Post
dont use CCC and AB together... just disable or lock the OC function in CCC so you dont have any weird issues with it messing up AB while its running..
I need power control which AB does not have.

As I test, I ran at clocks 840/1325 at 0% and 20% Power Control in CCC and noticed a significant difference between the two. When running at 840/1325 in AB, even if I max out the voltages, there is little change in benchmarks/performance/burn-ins.
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Tiger Lily 2.0
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post #5 of 32
Quote:
Originally Posted by kwantran View Post
I have already done this. I did this to start of. Changing the voltages doesn't help. I need power control to be 20%. From what I've read/been told, AMD throttles the voltages so that I won't notice a difference in performance.
AMD's voltage throttle is a safety feature not a performance limiter. I'v benched at stock clocks, 900MHz and 980MHz and my scores were higher at each overclcok. I upped my voltages to increase stability from stock to 1.2 to 1.25 respectively.
post #6 of 32
Thread Starter 
What does power control do exactly? When I increase my power control to 20% in CCC, my FPS in Furmark become higher, without changing my clocks.

Changing my clocks from stock to 925 in AB made nearly no difference.
Edited by kwantran - 5/25/11 at 10:16am
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post #7 of 32
power control = OCP limiter or "power cap"

..just do OCP mod.. and done no more power cap ever... just raise GPUv as needed
post #8 of 32
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
power control = OCP limiter or "power cap"

..just do OCP mod.. and done no more power cap ever... just raise GPUv as needed
I do I do an OCP mod on the 6950 unlocked? Thanks
Tiger Lily 2.0
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Tiger Lily 2.0
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post #9 of 32
Quote:
Originally Posted by CL3P20 View Post
power control = OCP limiter or "power cap"

..just do OCP mod.. and done no more power cap ever... just raise GPUv as needed
Sorry but I don't think that's true. When I check MSI Afterburner with "Power Control" set to 0 I can see my GPU core frequencies jumping up and down, but once I set Power Control to +20 (through CCC), it goes up to a constant frequency on my GPU's, but then I am not able to increment my overclock higher than what the max is in CCC.
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post #10 of 32
I dont understand what your saying..
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