i've been contemplating on getting a 2nd hand 4850x2, it costs only $120. My concern right now is the power consumption, I have read this http://www.techpowerup.com/reviews/Sapphire/HD_4850_X2/... and it seems that under the peak load of ~327W, my 500W Silverstone ST50F-ES 80plus standard PSU just might be able to handle it.
My specs are:
amd phenom ii x4 945 3.0GHz
MSI 870-G45 mobo
2x 2GB kingston 1333mhz
samsung 1TB spinpoint f3 HDD
+ a couple of fans here and there
+ peripherals like mouse keyboard
i dont plan to crossfire and the only upgrade i see myself doing in the future is adding an SSD. given that i do end up with a 4850x2 and an ssd, will my PSU be able to keep up?
yeah you will be fine. that PSU is 500w continuous power, not peak. a lot of companies would sell it as a 600-650w unit. people will get a 500w peak unit and when it can't deliver 400w continuously they tell will tell people you need a 650-750w for any video card. That's why a good PSU may be more expensive up front but in the long run its always the cheaper alternative.
SilverStone Strider ST50F provides one of the best cost/benefit ratios for users looking for a good mainstream 500 W power supply. First, it can truly deliver 500 W at 50º C, which is outstanding. Second, the number of power plugs this unit has is more than a mainstream user will ever need: two 6-pin auxiliary power plugs for video cards, six SATA power plugs and six peripheral power plugs. And the third highlight from this power supply is its efficiency, above 85% if you pull up to 300 W, 84% if you pull 400 W and 80% or 82% if you pull 500 W, depending on the load pattern. And fourth we could make this power supply to deliver up to 598.5 W.