How to Force Max clock speeds (ATI Cards)

[Targ]

CLOD for now will not ramp up to 3D speed unless you force max clock speed via the CCC in the tray bar.
This is for Crossfire and duel GPU core ATI owners, I am not sure if this is an issue for single card/GPU ATI owners.

http://www.youtube.com/watch?v=b4uNfWI6TiE

[Triggaaar]

AMD cards don't appear to be running at full clock speed. Instead of about 850 MGHz they're sitting at 500 MGHz despite being run at 100%.

That youtube clip doesn't work for me, there's no option to force maximum clocks.

[GHarris]

For what little it may be worth, my single 5870 appears to be correctly running at full clock speeds. I too had the impression that this was an issue mainly affecting Crossfire/SLI users.

[Triggaaar]

Originally Posted by Tanner

So maybe not as issue for single GPU cards.

I have a single card, and like other users are finding, it is sticking at 500 MGHz

[Codex]

From the 4xxx series onwards all ATI cards will automatically clock down to save power when not being used in a full screen DX or OpenGL app / game.

I might be wrong but I'm pretty sure that if you ALT-TAB out of game the card(s) will power down which may explain why you'll see the clock speeds lower than max.

They should go back to maximum when the game is running in full screen mode again.

Using AMD Overdrive you can force the card(s) to run at full or overclocked speeds all the time no matter what type of app or resolution your using.

Also don't be fooled when you've got two GPU's in Crossfire mode, one card will always run higher than the other when idle, but both will fire up when you run a game. Unless of course you "Overdrive" them.

[Mabroc]

I got a brand new Radeon 6950 2GB (I upgrade for CoD) and Im having this problem, the game is not clocking the core and the memory at the stock full power Mhz, the values are those of the desktop.

You can check the values (and others like temp and GPU load) with GPU-Z.0.5.2, start the sensors, play 20 seconds and ALT+TAB to check them (they will go down to desktop level if working properly, but you can see the graphic chart). When using any other game (I tried 3 or 4 with this card) the chart show the throttle up in game and the throttle down when ALT Tabbing to desktop.

For now Im using MSIAfterburner overclocker utility that show current values and a nice graphical chart to Overclock the core and memory Mhz by 1 Mhz only, no risks that way. I put 801mhz as core and 1251mhz as memory clock and press apply button, then go into the game (im not using the option to remember the OC with every boot). When I ALT+TAB to check after playing Im seeing the correct throttling up to those values when in game in the chart.

So is a BUG!!!!! Some ATI cards show it and others dont, Im using Windows 7 32bit (still working on a 64bit install on other partition) with the 11.3 Catalyst driver.

I see the potential of the sim, but all the little bugs and cumbersome menues, controls setup for joystick, etc are driving me mad. We need a lot of sandpaper

[Targ]

Originally Posted by Codex

From the 4xxx series onwards all ATI cards will automatically clock down to save power when not being used in a full screen DX or OpenGL app / game.

I might be wrong but I'm pretty sure that if you ALT-TAB out of game the card(s) will power down which may explain why you'll see the clock speeds lower than max.

They should go back to maximum when the game is running in full screen mode again.

Using AMD Overdrive you can force the card(s) to run at full or overclocked speeds all the time no matter what type of app or resolution your using.

Also don't be fooled when you've got two GPU's in Crossfire mode, one card will always run higher than the other when idle, but both will fire up when you run a game. Unless of course you "Overdrive" them.

You assumed that I am alt tabbing out of the game. What made you assume that?

Many people with duel GPU cards and crossfire have reported the card does not ramp up to 3D but stays at 2D clock speeds.

I have 2 monitors and keep CCC open on one to monitor while in game.

[Triggaaar]

Originally Posted by Codex

I might be wrong but I'm pretty sure that if you ALT-TAB out of game the card(s) will power down which may explain why you'll see the clock speeds lower than max.

No, I can monitor the clock while the game is running, I'm not alt-tabbing out. I know the monitors are working (GOU-Z, CCC and MSI) because I can watch everything else change (temp, fan speed, GPU usage etc). MSI also keeps a graph that shows not only what clock speed you're at now, but what the clock speed has been (x axis = time, y axis = speed).

Using AMD Overdrive you can force the card(s) to run at full or overclocked speeds all the time no matter what type of app or resolution your using.

How? Please don't guess, only say if you know how to do it.