HIS has taken the AMD HD 6790 reference design, increased its clock speeds and slapped their new IceQ X thermal solution on it. The result is a solid HD 6790 card that is about 5% faster than the AMD version, which delivers awesome temperatures and good overclocking potential."
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