For a mining rig (no sound card, DVD activity, etc.) that uses about 100W -- I don't plan on CPU mining -- plus (2) 5830, what size power supply should I get?
Conventional wisdom says "500W for a one-card system, 750W for a 2 card system"
I know that you don't want to hit the limit exactly, because most power supplies CAN'T handle their advertised maximum.
But how close can I hope to get? I'm planning on buying a quality power supply -- not the cheapest I can find. You get what you pay for, and there are some areas you don't want to skimp.
200W + 200W + 100W = 500
So a 620 or 650 should be sufficient, right?
I ask because a 650W (decent brand) can be had for $49 after rebate, whereas a good 750W (I keep coming back to Corsair here for some reason) will set you back $95 or more. That's a big difference!
Any miners out there try that configuration yet?