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What PSU for dual card setup?

post #1 of 40
Thread Starter 
Im running a shoddy so called 750W dell branded PSU and its limiting my 7950 overclocks.
Borrowed a TX750 and it got to 1250mhz at 1.2V. On the dell PSU it gets to 950mhz at 1.2V and crashes in all games.

What size would you guys recommend for a dual GPU setup? 850? And also, what PSU?
post #2 of 40
Quote:
Originally Posted by WuMyster View Post

Im running a shoddy so called 750W dell branded PSU and its limiting my 7950 overclocks.
Borrowed a TX750 and it got to 1250mhz at 1.2V. On the dell PSU it gets to 950mhz at 1.2V and crashes in all games.

What size would you guys recommend for a dual GPU setup? 850? And also, what PSU?

Dual 7950's is fine with a high end 750 - 850W unit.
I would say the best unit in the 800 to 900 range is the Seasonic X 860W Platinum. No coil whine and perfect power with minimal ripple. Plus, it silent at high load.
Edited by BradleyW - 6/22/13 at 5:46am
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post #3 of 40
Quote:
Originally Posted by BradleyW View Post

Dual 7950's is fine with a high end 750 - 850W unit.
I would say the best unit in the 800 to 900 range is the Seasonic X 860W Platinum. No coil whine and perfect power with minimal ripple. Plus, it silent at high load.

The Seasonic Platinum does not have a very low ripple so you can find lots of others that have lower ripple

Only thing it does very is efficiency
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post #4 of 40
Quote:
Originally Posted by shilka View Post

The Seasonic Platinum does not have a very low ripple so you can find lots of others that have lower ripple

Only thing it does very is efficiency

It does have a low ripple.
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post #5 of 40
Quote:
Originally Posted by BradleyW View Post

It does have a low ripple.

Its 30mv to 50mv the Super Flower Golden King rebrands sit at 25mv to 30mv
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post #6 of 40
Quote:
Originally Posted by shilka View Post

Its 30mv to 50mv the Super Flower Golden King rebrands sit at 25mv to 30mv

I've not heard of those before. I might check them out!
Cheers.
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post #7 of 40
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post #8 of 40
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post #9 of 40
Quote:
Originally Posted by BradleyW View Post

Is the ripple any different between the 860W and 1000W platinum power supply?

I dont see why it sould be its the same platform

If you read the whole review you see that the Seasonic takes a clear win with efficiency but ripple could be better
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Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
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Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
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post #10 of 40
1000w would be overkill Honestly 700w would be enough.
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