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Old 01-22-2012, 10:55 PM   #1 (permalink)
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Default what's a good PSU for 2x OCed 7970 ?

The build:

CPU: i7 2600K (@ ~4.8Ghz)
Mobo: ASUS P8Z68-V/GEN3
GPU: AMD Radeon 7970 Crossfired
Memory: 16 GB DDR3 1600 MHz (2x8GB)
Hard drive: 160Gb SDD
PSU: ? ? ? ? ?
OS: Win7 64bit
Cooling: not selected any yet
Monitor: no specific model selected yet (will be a 22"+ 1080p 120Hz single monitor)


N.B.
-I won't do any video encoding, graphic design and such demanding task.
-The rig will be a pure gaming single monitor 1920 x 1080p rig (single screen)
-I don't car that much of being Energy-Efficient (or should I ?) (not paying for electricity where I live at)
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Old 01-22-2012, 11:03 PM   #2 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

If it's a desktop I would recommend around 800-1000 watts for a hard-core gaming PC
Otherwise i haven't had much experience with laptops

Or if your using more generic games (Stronghold, Sims, Elder scrolls ETC) then a 300-400 watt one should work
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Old 01-22-2012, 11:10 PM   #3 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

This isn't a laptop.

I would suggest at least a 750W. I think that should be just fine. Might need more, I'm not sure about the 7xxx line.
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Old 01-22-2012, 11:19 PM   #4 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

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Originally Posted by MindoverMaster View Post
This isn't a laptop.

I would suggest at least a 750W. I think that should be just fine. Might need more, I'm not sure about the 7xxx line.
Thanks
I'll go with a 850W

now which one..
Corsair HX850 seems to have good reviews. your think ?
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Old 01-22-2012, 11:32 PM   #5 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

You didn't say anything but the HX850. But yes, that is an excellent choice.
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Old 01-23-2012, 12:49 AM   #6 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

i never build computers with anything but a corsair PSU. also, due to the 7970s new 28nm manufacturing process they consume under 300watts under full load (each)
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Old 01-23-2012, 06:25 AM   #7 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

As anyone will say, stick with a reputable brand. Don't skimp on power, it will wear out your parts faster and possibly cost you more in the long run. I recommend getting an 80 plus certified power supply so that you steer clear of most nasty pieces of junk. And yeah, stick with around 850w, it should give your psu some room to breath so it isn't being run too hard.
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Old 01-23-2012, 08:17 AM   #8 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

Skip, he's looking at a Corsair HX, nowhere near crappy.
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Old 01-23-2012, 09:17 PM   #9 (permalink)
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Default Re: what's a good PSU for 2x OCed 7970 ?

Good choice my friend
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