I have another downlock observation with GTX1080; memory clock goes down around 10% as soon as SETI or any other pure GPU compute starts, card is pushed into P2 mode instead of P0 (max performance mode). Win10x64 and 368.81 drivers. Why nVidia is doing this, it is unknown...

No any issues with games, all are running perfectly on P0, is max. performance mode and normal memory and boost GPU clocks.

Seems like nVidia driver as soon pure compute load is detected (no graphics output), cards are pushed to P2 mode.

Some others also found this, and happens also with Maxwell and recent drivers as well...
https://devtalk.nvidia.com/default/topic/940304/cuda-programming-and-performance/grim-memory-bandwidth-gtx-1080/1

There is some workaround but it doesn't work on Pascal, only on Maxwell....
https://devtalk.nvidia.com/default/topic/892842/one-weird-trick-to-get-a-maxwell-v2-gpu-to-reach-its-max-memory-clock-/

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Yes I reboot it and it was still low.

Going to download GPU-Z and see what it says.

I tend to run SIV64X

edit..

Downloaded and running but not really seeing anything unusual, other than the speed.

The speed is up with my adjustment to the clock offset.

Work is validating but just running slower than normal

Does GPU-Z give any indication?

You've tried the usual fix (reboot?)

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Grant
Darwin NT

This GPU is over here on Main, and the work units appear to be normal.

So I can't figure out why it's doing that.

Work is validating but just running slower than normal

On Beta my GTX 1070 was dropping it's clock speed down due to all the noisy WUs going through. Most of them were finishing before they had a chance to even start on the GPU; every now & then one would last a bit longer & start on the GPU- the clock speed would pick up again, then the WU would finish a few seconds later & the clock would drop down again.
Things seem to have settled down there, for now.


EDIT- while running GPU-Z it's PerfCap Reason would change from VRel (Voltage Reliability) to Util (Limited by GPU utilisation).

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Grant
Darwin NT

So I've notice something funny with my 1080

Normally it runs about 1.89GHz with it's own boost and no need adjust anything.

But recently I've noticed the speed has dropped to 1.65GHz

So to remedy this, I've had to adjust the clock offset on the Precision X to push the speed back to to 1.9GHz

It's holding for now, but I wanted to see if anyone else has seen this.

GPU temp is holding at 41C ( I hybrid this GPU a while back)