"The MonCaso Sonamu G100 is a small form factor (SFF) case from Moneual, which comes with a 350 W power supply and promises zero consumption when in standby mode, thanks to a relay that completely removes the power supply from the power grid when the computer is turned off. Therefore, this case is sold as having an "environmental-friendly design." The problem, however, is that the manufacturer decided to use one of the worst power supplies available on the market, the Logisys PS350MA, which presents efficiency below 80%, thus creating a big contradiction. Read on."
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