"The NAXN is the latest power supply series from Enermax, and is subdivided into three sub-series: the NAXN, also known as Tomahawk II, featuring 350 W, 450 W, and 500 W models, with no 80 Plus certification; the NAXN 80+, featuring 350 W, 450 W, 500 W, and 600 W models, with the standard 80 Plus certification; and the NAXN 82+, featuring 750 W and 850 W models, with the 80 Plus Bronze certification and modular cabling system (a feature not available on the models from the other two sub-series.) Let's see if the new Enermax NAXN 82+ 750 W is a good option."
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