'The AMD HD6790 is aimed to bridge the gap between the HD5770 and the HD6850. In essence it is a HD6800-card where AMD has just cut away some shader processors and som ROP's. We've put it through a series of benchmarks as well as overclocked it to see what it can do.'
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