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Can a 400w psu run a 4850 or 4870 gpu?

Last response: in Components
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November 5, 2011 6:42:56 AM

Hello,

I am wondering if I can run either a Radeon 6850 or 6870 on my 400W Corsair PSU.

My current specs are: CPU i3 2100. HDD Samsung Spinpoint F3 1TB. 8gb ram.

Here's the link for my psu:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
November 5, 2011 7:25:18 AM

no, the requirement of 6850 is 500watts or greater.
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a c 243 ) Power supply
November 5, 2011 10:58:16 AM

6850, yes, no problem.
6870, pushing it a bit, and you don't have the connectors for it unless you use an adapter.
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a b ) Power supply
November 5, 2011 11:16:23 AM

vizzion said:
Hello,

I am wondering if I can run either a Radeon 6850 or 6870 on my 400W Corsair PSU.

My current specs are: CPU i3 2100. HDD Samsung Spinpoint F3 1TB. 8gb ram.




A Corsair 400 W is a good enough PSU for cards upto Radeon HD 6870, but you have to use a 6 pin adapter cable. If you have the spare cable (normally comes with the card) you can use a Radeon 6870 or else a Radeon 6850 should be ok. ;) 

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a b ) Power supply
November 5, 2011 11:19:49 AM

pro-gamer said:
no, the requirement of 6850 is 500watts or greater.



AMD says 500w as an extra considering cheap quality PSU's NOT from high quality brands like Corsair, Cooler Masters, Antec etc :kaola:  :kaola: 
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a c 144 ) Power supply
November 5, 2011 1:31:51 PM

One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260 - a card with similar power requirements to a 6870, a Gigabyte EP45-UD3P motherboard, 3 hard drives and an optical, and a Soundblaster card all powered by a Corsair 750TX.

Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% efficiency, the system pulls 300 watts from the PSU.

A CX400 will handle the load.
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