Clock SpeedsFor this test, we first let the card sit in idle to reach thermal equilibrium. Next, we start a constant 100% gaming load, recording several important parameters while the test is running. This shows you the thermal behavior of the card and how the fans ramp up as temperatures increase. Once the temperatures are stable (no increase for two minutes), we stop the load and record how the card cools down over time.
Clock ProfilesModern graphics cards have several clock profiles that are selected to balance power draw and performance requirements.
The following table lists the clock settings for important performance scenarios and the GPU voltage that is used in those states.
|Desktop||25 MHz||350 MHz||0.713 V|
|Multi-Monitor||25 MHz||350 MHz||0.712 V|
|Blu-ray Playback||21 MHz||350 MHz||0.713 V|
|3D Load||1766-1794 MHz||1000 MHz||1.068-1.081 V|