Which PSU for two R6950's?

Hi,
I was wondering which PSU I should get for 2 6950's, is 750w enough? I currently have a Corsair CX600, but I'm soon installing another R6950, and I've heard that 600w isn't enough. My specs will be the following:

MSI P67A-GD55
i7-2600K @ 3400MHz
16GB RAM (Kingston HyperX Genesis)
2x MSI R6950 Twin Frozr III

So how many watts will I need and which brand would you recommend? Thanks in advance!
7 answers Last reply
More about which r6950
  1. You will need a PSU with 4 PCIe connectors. Most power supplies below 750 watts only have two, so you are kinda forced into getting a 750w PSU minimum. Yes, I know you can buy a molex adapter, but we're doing things on the up and up here, yes?

    I recommend the Corsair Enthusiast Series TX-750 or TX-750M if you like modular units.
  2. abekl said:
    You will need a PSU with 4 PCIe connectors. Most power supplies below 750 watts only have two, so you are kinda forced into getting a 750w PSU minimum. Yes, I know you can buy a molex adapter, but we're doing things on the up and up here, yes?

    I recommend the Corsair Enthusiast Series TX-750 or TX-750M if you like modular units.


    Thanks, but do you think 750w is enough? I mean, if I for example want to overclock my system, would an 800w or 850w PSU be a smart buy?
  3. If you buy the corsair, or another reputable brand, then 750W will be fine, even with overclocking. It only get's dodgy when you start playing with the lesser quality brands.
  4. abekl said:
    If you buy the corsair, or another reputable brand, then 750W will be fine, even with overclocking. It only get's dodgy when you start playing with the lesser quality brands.


    Thank you, still a bit unsure if getting perhaps an 800w Corsair would be a smart move... but thanks a lot!
  5. It's plenty, we can do some estimates if you want. Just tell us all of the things you need to power in your system, case fans, hdd, etc.
  6. amuffin said:
    It's plenty, we can do some estimates if you want. Just tell us all of the things you need to power in your system, case fans, hdd, etc.


    Okay, so here's the list:

    MSI P67A-GD55
    i7-2600K @ 3400MHz
    16GB RAM (Kingston HyperX Genesis)
    2x MSI R6950 Twin Frozr III
    60GB SSD
    2TB HDD
    1 Case fan (should I get more?)
    Coolink Corator DS
    A Blu-Ray drive (writing)

    Thanks a whole lot for helping and sorry if I'm not answering clearly, this is my first PC project.
  7. And it says (B3) on the motherboard.
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