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Topic: GPU downclocking problem.

A few driver versions ago, my 7950 started downclocking to a max of 850Mhz during video playback, no matter what kind of load it's under.


Unfortunately, this isn't enough for SVP at 1440p/96hz... I can't even use MadVR now, and with MPV/MPC-QT I'm getting a few framedrops at very low settings (whereas I get none when I disable GPU acceleration).


Other than afterburner (which isn't working), what do ya'll do to force 3D clocks during video playback?

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Re: GPU downclocking problem.

probably turn off DXVA decoding

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Re: GPU downclocking problem.

Chainik wrote:

probably turn off DXVA decoding

Already tried in MPC-QT and MPC-HC, doesn't help sad

It's not a GPU usage issue either. I messed with MadVR and got it to 99% usage, forced constant voltage in afterburner, still won't budge an inch.

4 Reply by brucethemoose (edited by brucethemoose 18-05-2017 19:53:17)

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Re: GPU downclocking problem.

EDIT


You were right, disabling DXVA does the trick. Thanks.

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Re: GPU downclocking problem.

Really is amazing though... you can have a DirectX game in the foreground, a modded BIOS, an OC program forcing constant voltage, clockblocker open in the background etc, and it still downclocks the GPU for DXVA decoding.

Re: GPU downclocking problem.

> a modded BIOS

a long time ago there was a solution for HD 5xxx cards
https://www.svp-team.com/w/images/d/d5/Uvd_clocks_2.png

have no idea if it works for 7xxx or later

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Re: GPU downclocking problem.

It's not so simple now, unfortunately sad

https://www.techpowerup.com/forums/thre … ds.189089/

You cant set 2D / UVD clocks higher than the values stored in BIOS (these limitations are intentional, without these limits powerplay would go nuts...)