Enermax Revolution87+ 850W Power Supply Unit Review @ NikKTech
 

I can't speak about where you all live but where we live we get countless of electricity spikes and blackouts during both hard winter and summer periods (due to increased power requirements) so that's all the more reason to own a very good power supply unit. Granted a PSU may not be able to withstand the worse possible electricity outages/spikes/blackouts but so far out of the countless ones we've tested under such conditions (also our PSU test bench is deliberately not plugged into a UPS) only 1 has ever failed us. So a good/high end PSU should last for a long time even if you don't own a good UPS (Uninterrupted Power Supply - something we do however recommend having). One such unit is the latest Revolution87+ 850W PSU by Enermax which we've been testing for the past week with quite impressive results i might add.

http://www.nikktech.com/main/article...er-supply-unit