Today AMD released their new Radeon HD 7800 Series, which is based on their new 28 nm Pitcairn graphics processor. The HD 7850 and HD 7870 offer a significant performance increase over the previous generation - up to 40% faster in our testing. Power consumption is also at a new record low, putting these cards in the leading performance per Watt spot."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips