Radeon HD 5870: Overclocking
The comparatively low noise level and the good temperatures make the Radeon HD 5870 an interesting card for overclocking attempts. We cool the metal backplate with an additional 120 millimeter fan and increase the fan speed in the Catalyst Control Center to - deafening - 100 percent.
Catalyst Control Center: The Overdrive menu allows only 900/2.600 MHz [Source: view picture gallery]
The Overdrive menu of the Catalyst Control Center allows 900/2,600 MHz at max (default: 850/2,400 MHz). Due to the good cooling our HD 5870 test sample is running stable with the CCC maximum. The performance in games is increased by up to five percent.