ATI 6870 not overclocking (Low FPS)

[Orpheus]

Originally Posted by Thee_oddball

Nvid cards wont be affected UVD is an ATI program

Ahh right, thanks for the info!

Originally Posted by O_Smiladon

Do you mean powercolor cards ?

I have a HD4890 1 GB powercolor and I am not to sure if I have an a improvment.

It still stutters down low sooooo not sure.

O_Smiladon

Smiladon - no, I mean the ATI Powerplay function:

http://www.amd.com/us/products/techn...ower-play.aspx

All it does is throttle up/down the GPU depending on load. It should detect changes and throttle the card appropriately. The Ubi splash video that plays on startup was locking the card to video speeds (UVD) and the Powerplay function wasn't detecting the return to 3D, so the game was effectively running on half a graphics card.

For ATI cards with the underclocking problem, when running GPU-Z I saw a max clock spike on initial load, then the Ubi splash locks the GPU clock at 400mhz. Removing/renaming the .wmv file solves the problem as there's no transition from 3D to 2D clocks - the game runs at full 3D clock speed.

If you're not sure if you have this issue, run GPU-Z before you load CloD and see how your GPU clocks up. If it's stuck at half clock speeds (400mhz in my case, may differ for different cards), try renaming the ubi splash. Not all ATI cards are affected by this issue, so if your card clocks properly there's no need to do it - but if your card isn't clocking properly, this will solve it & give you a nice performance boost.