The VTX3D HD 7870 Black is based on AMD`s recent Tahiti LE GPU. It comes with 1536 shaders and very decent clock speeds. As a result the card is 8% faster than HD 7870, almost as fast as HD 7950, which costs significantly more."
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