OverclockingThe overclocks listed in this section were achieved with the default fan and voltage settings as defined in the VGA BIOS. Please note that every single sample overclocks differently, that's why our results here can only serve as a guideline for what you can expect from your card.
Maximum stable clocks of our card are 1075 MHz core (16% overclock) and 1715 MHz Memory (25% overclock).
Both overclocks are spectacular. It's amazing to see over 15% overclocking potential on a brand-new GPU design, using a brand new production process. Over 1700 MHz memory clock is actually the highest memory speed we have ever seen!
Overclocked PerformanceUsing these clock frequencies we ran a quick test of Call of Duty 4 to evaluate the gains from overclocking.
Actual 3D performance gained from overclocking is 14.1%.
Idle temperatures are comfortably low. Under load the card reaches a very acceptable maximum temperature that still has plenty of headroom for overclocking.
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 we measured. We measure on the pins of a coil or capacitor near the GPU voltage regulator.
|GPU Voltage |
|Desktop||300 MHz||150 MHz||0.85 V|
|Multi-Monitor||350 MHz||1375 MHz||0.96 V|
|Blu-ray Playback||925 MHz||1375 MHz||1.18 V|
|3D Load||925 MHz||1375 MHz||1.16 V|
|CCC Overdrive Limits|