GTX 460 SLI keeps switching clock speeds?

[LateX'Dog]

I have my GTX 460 overclocked to 845/1690/2100 (afterburner) and sometimes when i play games they switch there freqencies without input from me.

For example playing WoW will sometimes lower the core to 450!

Just playing Gothic 4 and the screen went black and then changed the core speeds to 675.

I have no idea what is going on.

 

[steve258]

Yeah for me sometimes the core/shader clock just stuck at 405 doesn't matter what OC profile I apply, everything goes back to normal once I restart PC though.

With Gothic 4 perhaps the oc wasn't stable? Driver might have stopped responding, turning screen black for a sec then recovers, reverting all clock settings to default?

 

[RavenXXX2]

Try going in to the control panel and mange 3D settings, then in global settings change power management mode to prefer maximum performance.

 

[LateX'Dog]

Thanks for the tips.

Just set the global setting to single display preference and max power setting.

 

[RavenXXX2]

Is your overclock stable? try backing down the clocks if it still screws up.

 

[LateX'Dog]

Just tested the power setting and that hasnt changed anything.

Kombuster shows the overclock as stable.

Currently clocked at:

No volt change
845 Core
1690 Shader
2100 Memory

Thing is i should be able to get these clocks no problem as most people are able to achieve this.