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Is a 750w psu enough for this build?

Quick idiotic question, I'm pretty embarrassed to be asking this in the first place.

This is the build, in case you didn't see the title I'm just wondering if a 750w power supply is enough.


Motherboard: GIGABYTE GA-Z77X-UD5H

Video card: GIGABYTE GV-N670OC-2GD GeForce GTX 670 2GB

PSU: Corsair TX750 V2 750w (in case you were wondering)

CPU: Intel i5 3570k

Hard drive: WD Caviar black 1tb 64mb cache/7200 rpm

SSD: Samsung 830 series 128gb SATA 3

RAM: corsair vengeance low profile 8 gb (2 x 4gb) 1.5v

Optical drive: Asus DRW-24B1ST OEM

CPU cooler: Cooler Master hyper 212 evo (don't know if this really matters)

Case: NZXT Phantom 410 (included for the heck of it :whistle:)

I think that is about it, let me know if I missed anything. Also let me know is 750w is too much, wouldn't mind saving a few extra bucks. :D
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  1. arbetor20 said:
    Quick idiotic question, I'm pretty embarrassed to be asking this in the first place.

    This is the build, in case you didn't see the title I'm just wondering if a 750w power supply is enough.


    Motherboard: GIGABYTE GA-Z77X-UD5H

    Video card: GIGABYTE GV-N670OC-2GD GeForce GTX 670 2GB

    PSU: Corsair TX750 V2 750w (in case you were wondering)

    CPU: Intel i5 3570k

    Hard drive: WD Caviar black 1tb 64mb cache/7200 rpm

    SSD: Samsung 830 series 128gb SATA 3

    RAM: corsair vengeance low profile 8 gb (2 x 4gb) 1.5v

    Optical drive: Asus DRW-24B1ST OEM

    CPU cooler: Cooler Master hyper 212 evo (don't know if this really matters)

    Case: NZXT Phantom 410 (included for the heck of it :whistle:)

    I think that is about it, let me know if I missed anything. Also let me know is 750w is too much, wouldn't mind saving a few extra bucks. :D


    Let me tell you something. I was putting my computer together yesterday, it worked for about 30s (test run), then I plugged it into a monitor, it didn't turn on again. I took it to PC World (Large UK PC shops) and they said my PSU was blown. It was a 650W, and I had a 670 and a 3770k. You have a similar build to me, I am going to buy 800-1000 soon. I think you should do the same xD
  2. Corsair TX750 will run that no problem as its a quality psu

    you could probably add a second gtx670 and it would still run it

    so the suggestion you need 800w to 1000w is about what would be expected from some one who goes to pc world--most of

    their staff are clueless as well--think their technica/repair department had to re-name itself recently as its name was mud
  3. jediarron said:
    Let me tell you something. I was putting my computer together yesterday, it worked for about 30s (test run), then I plugged it into a monitor, it didn't turn on again. I took it to PC World (Large UK PC shops) and they said my PSU was blown. It was a 650W, and I had a 670 and a 3770k. You have a similar build to me, I am going to buy 800-1000 soon. I think you should do the same xD
    That isn't good... My budget is already tight enough as it is. :cry:
  4. mcnumpty23 said:
    Corsair TX750 will run that no problem as its a quality psu

    you could probably add a second gtx670 and it would still run it

    so the suggestion you need 800w to 1000w is about what would be expected from some one who goes to pc world--most of

    their staff are clueless as well--think their technica/repair department had to re-name itself recently as its name was mud
    Ok thanks for the reply, saved me from revising my components.
  5. as a guide i have the corsair tx750 myself

    am running slightly older components than you so they are a bit less power effecient

    and are heavily overclocked

    2600k at 5ghz

    gtx570 at 875mhz and 4600mhz memory

    corsair h80 cooler

    1 dvd-rw drive

    3 x ssd

    1 x mechanical drive

    fan controllers and other add ons

    6 fans

    no problems
  6. Best answer
    Often people look only at which psi has the "highest watt number" without knowing that a great part of unbranded PSUs does not even come close to the declared number.
    Corsair is a good brand, for PSUs too. Real 750w should be more than enough for your setup. Of course... the more the merrier! Keep in mind that the case and the PSU can be used for several years, they can outlast your whole setup at least a couple of times.

    So... spending more for a REAL 1000w capable PSU makes sense since maybe in the future 750w won't be enough and you would be forced to buy another PSU (so you would end up spending more money). Plus you will have a quieter unit meanwhile ^_^

    Ask your wallet and let me know :-)
    Bye.
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  7. jediarron said:
    Let me tell you something. I was putting my computer together yesterday, it worked for about 30s (test run), then I plugged it into a monitor, it didn't turn on again. I took it to PC World (Large UK PC shops) and they said my PSU was blown. It was a 650W, and I had a 670 and a 3770k. You have a similar build to me, I am going to buy 800-1000 soon. I think you should do the same xD

    650 watts is enough power for you to safely add a second GTX670 to your machine
    Your psu failed, it happens, no point in telling yourself or others that they need more power because of it
  8. Thanks for the answers guys!
  9. Best answer selected by arbetor20.
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