Club3D is first to release a Tahiti LE based HD 7870. Their jokerCard runs 1536 shaders with very decent clock speeds, which results in an 8% performance improvement over HD 7870, just 2% shy of matching HD 7950. This performance increase does come at the cost of increased power draw though."
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