" The core was overclocked nearly 6% over reference 5770 speeds, and only 2% on the memory side. Without effort, 970 MHz core and 1360 MHz memory was easy to attain using only ATI Overdrive setting clock rates and fan speed. The gains equate to 8% more speed on the core from factory clocks and 11% more on the memory - not bad at all. Temperatures peaked in the high seventies, but often were in the sixties, especially with direct fan control. The automated profile is targeted more for silence, although even with temperatures into the seventies, the video card is plenty safe to operate."

PowerColor 5770 PCS+ Vortex Review @ OCC