1000w psu enough for two 6950's in crossfire?

[axlrose]

Just bought two new 6950's (sapphire toxic 2gb) and I'm wondering if I'm still going to be good with my Zalman 1000w psu.

Thanks.

 

[amuffin]

Yes 1000w is well over the required watts for 6950 cf.

 

[danraies]

Yes 1000w is well over the required watts for 6950 cf.

+1

 

[spentshells]

Agreed.

 

[iam2thecrowe]

you could run 4 x 6950's with a 1000w psu.

 

[vitornob]

It depends of the 12v amperage.

Already saw 900w Psus that is worse than some 800w Psus in 12v rail area -> meaning the 800w would be better for VGAs in this case.

Could u say the 12v rail amperage?

 

[Gothams Finest]

Your power supply is overkill for 6950 CF, you have plenty enough power.

 

[Wisecracker]

[:jaydeejohn:5]

In Crossfire no way you hit 2X power draw -- and this is in FurMark, too.

 

[Gothams Finest]

Consider swapping those 6950s for one of them Mars GTX 580 X2s...

3*8pins each

Haha yeah if he has a very healthy bank account.

 

[beenthere]

You can determine how much power in watts and 12v rail amps. are required for your current and future build and what PSUs are quality built to provide reliability, from the link below. No guessing required, just objective, accurate useful data. Make sure to check the EXACT PSU model as not all models from a given brand are top quality.

http://www.tomshardware.com/forum/314712-28-please-read-determine-power-required

 

[Djentleman]

1000w psu probably has plenty enough to power 2 6950's! The 12v rail is not a worry, it probably has more than 30A. I doubt it has less than that.

 

[Gothams Finest]

If its the Zalman 1000w I'm thinking of then it has 6 12v rails. 4 with 18 amps and 2 with 28 amps.

 

[axlrose]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817379009

 

[jyjjy]

That would run 4 HD6950s as others have said.

 

[Gothams Finest]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817379009

Yeah thats the one. That PUS is more than enough for 2 6950s.

 

[gnomio]

1000w is one overkill lol. A good 650w will do fine.

 

[axlrose]

So the fact that I purchased this with my build back in 2008 the day the gtx 280 came out was also overkill?

 

[Gothams Finest]

So the fact that I purchased this with my build back in 2008 the day the gtx 280 came out was also overkill?

Take a wild guess