Do I have enough power!?

[Matt_TPrice]

I am putting together a build using an fx 6300 and a 7870. Is a corsair 500 watt power supply ok?

[Owen]

Ya that should be enough power. Keep in mind going crossfire or SLI might require a bit more power.

[Glenwing]

Yes although a SeaSonic S12II 520 would be a better choice.  CX series is not really made to last, and has known coil whine problems.

[Blade of Grass]

Yep! It should be more than enough.

 

If you want to be sure, use eXtreme Power Supply Calculator to calculate everything that your build will have.

 

Though I would recommend going with a different PSU.

[Elbstrand]

Yes, a good 500 Watt supply (80plus bronze+) can drive just about any PC with a single graphicscard.

[Matt_TPrice]

Ya that should be enough power. Keep in mind going crossfire or SLI might require a bit more power.

What size would be good for a crossfire config?

[Godlygamer23]

What size would be good for a crossfire config?

650 watts.

[Glenwing]

What size would be good for a crossfire config?

 

650W if it's something like dual 650 Ti Boosts; higher end cards, 750W, or even 850W for dual titans or 780's or something like that.

[boggle4321]

650W if it's something like dual 650 Ti Boosts; higher end cards, 750W, or even 850W for dual titans or 780's or something like that.

none of those cards are capable of cross fire, i think you mean SLI :p. 

[TechTheWorld]

Well do you work out?(yea 500wtt should be enough).

[Glenwing]

none of those cards are capable of cross fire, i think you mean SLI :P. 

I took it as dual graphics in general.

 

For the given card (7870) I'd probably recommend 750W.