How much of a power supply for a GTX 275 SLI / i7 setup?

[jroach17]

Hi all,

I am planning on building a new PC, and the only thing I'm hung up on is my GPU setup. I know that I want to do SLI / Crossfire and I am leaning towards two GTX 275's.

The thing is, I'm not sure as to what power supply would be enough. I also plan to put an i7 in this PC.

I was looking at the PC Power and Cooling Turbo Cool 860W. Would that be enough power for my planned setup?

I only plan on having 1 HDD and 1 DVD/RW so there won't be anything else drawing too much power.

Thanks for the help!

 

[WR2]

That would be more than enough power for a 2x GTX 275 and Core i7 system.
Same for these 2 PSUs as well: PC P&C 750W or Corsair 750TX

 

[Helloworld_98]

should be but if you want more gpu power then two oc'd 4890's are the way to go since they oc further and do better at max oc.

 

[jroach17]

That would be more than enough power for a 2x GTX 275 and Core i7 system.
Same for these 2 PSUs as well: PC P&C 750W or Corsair 750TX

Really? That would save me a lot of money. I'm skeptical due to Nvidia's recommendations on their SliZone page: SliZone

Or do they only approve more expensive power supplies to get consumers to pay more?

 

[jroach17]

should be but if you want more gpu power then two oc'd 4890's are the way to go since they oc further and do better at max oc.

I've been debating that as well. Two GTX 260's or an 4870 x2 is another (cheaper) option. I'm more partial to getting a factory overclocked GPU rather then overclocking one myself.

 

[Helloworld_98]

I wouldn't worry with the 4890's, most of them get over 950mhz on the stock cooler, and if you waited for one with a non-reference cooler you'd probably go over 1ghz.

 

[jay2tall]

That would be more than enough power for a 2x GTX 275 and Core i7 system.
Same for these 2 PSUs as well: PC P&C 750W or Corsair 750TX

+1

I have the PC P&C 750 (the red one) and it's nice. Quiet even though it just has a single 80mm fan, doesn't heat up either. IT has nice long cables to. It has (2) 6 pin PCI-E and (2) 6+2 PCI-E cables. It will run what you want.

The Corsair is nice to, I can only say what I know from what I have.

 

[jroach17]

Thanks for the input guys!

Exactly what I needed to know.