PowerColor's new HD 6870 PCS++ comes with massively increased clocks out of the box which makes it roughly as fast as GTX 560 Ti or HD 6950. With a reasonable price increase of only $10 over the reference design, the card does not break the bank either, it is actually a worthy opponent to NVIDIA's GTX 560 Ti considering price/performance.
You do software updates to get the most from favourite programs right? Updating a motherboard BIOS can in a timely manner is also critical. The guide to Flashing a Motherboard BIOS spells out the often complicated steps in plain english. PCSTATS Tips