my first psu was a Delta 200W, then went to a 300W Codegen fake psu which killed my lovely Ti4200 with itself.. later went to a 300W Thermaltake made by Sirtec/Sirfa HPC-300-202, it served well for 6 years, still have it. after that i had a 500W High Power(HP-500-G12CS) it's a Sirtec/Sirfa again been using for 3 years.. a few monhs ago i finally have a Seasonic unit, it's excellent although it's pretty much overkill for my current needs..
3 x MSI 7970 @ 1100MHz core / 1500MHz Rams, Cpu Intel Core i7 3930k @4.8GHz, 4x4GB Gskill 2400MHZ, SSD Corsair GT 120GB, pumbs and other water cooler stuffs
pulling 1300W(AC) from wall, its around 1190W DC power(furmark+prime95)..
1600W Lepa would be sufficient
indeed the best modern sandforce drive was intel 520 and it died a few days ago but good controller doesnt save the day, V4 and Octane died so early that even a good controller can be ruined by bad firmware..