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Thinking of doing Radeon HD 7950 Crossfire.. will I need a better PSU?

post #1 of 8
Thread Starter 
This is my current setup (about 2 years old)

Intel Core i7 3930k overclocked to 4.5ghz running on a Corsair H100 all-in-one liquid cooling kit
x1 Radeon HD 7950 Twin Frozr OC Edition
Windows 8.1 Ultimate x64
OS running on SSD
Have about 6 other HDDs
PSU is 750 watts

Will I need to go to maybe a 1000 watt supply?
post #2 of 8
If you have a Ultra LSP 750, you need a better psu.

If you have an EVGA G2 750, you do not need a better psu.

You must provide relevant information to get a relevant answer.
post #3 of 8
Thread Starter 
Oh okay.
My PSU is actually a Corsair HX 750
post #4 of 8
It should be fine... I ran two 6950s (flashed to 6970s) at 1.225v and 925/1375 clocks without an issue on my PSU in sig.

Also...



And the test system:

Processor
Intel Core i7-3960X

Motherboard
ASUS P9X79 Deluxe

Memory
16GB Corsair 1866MHz

Solid-State Drive
OCZ Vertex 3 240GB

Cooling
Intel RTS2011LC
post #5 of 8
You should be good, the HX750 is a good unit.
post #6 of 8
6950's were awesome. I recently got a pair for $40 each, flashed and OC'd them very good.
post #7 of 8
Thread Starter 
Thanks for the replies!!

But I've actually had a total change of plans:

I am going to get the Radeon R9 295x2. Now I KNOW I'll be needing a better power supply... either 1000 or 1200. But what to get?
I will NOT be cross firing that though haha
post #8 of 8
You dont need 1000 or 1200 watts even for a 295x.
850 watts can do it.
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