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Need advice on PSU for gaming build

Hi all,

I'm trying to figure out how much power I need for a new gaming build.
Some calculators take is as around 600, while others show 700+.

The following listing is the build:

ASUS P8P67-Pro
Intel Core i5-2500
Kingston PC3 12800/1600 CL7 4GB
Kingston PC3 12800/1600 CL7 4GB
WD Caviar Black WD1001FALS 1TB
WD Caviar Black WD2002FAEX 2TB
WD Caviar Green WD20EARX 2TB
Sapphire HD6950 2GB GDDR5
Corsair Hydro H80
CoolerMaster HAF X
LG BH10LS30 Blu-Ray Burner Internal

I'm planning to put in the maximum number of fans for the case and maybe 3 or 4 USB items like portable HDD and media players.

I have my eyes set on a Seasonic 660W PSU but I'm not sure if it is enough.

Thanks!
12 answers Last reply Best Answer
More about need advice gaming build
  1. Power consumption hd 6950 underload arround 256W and Seasonic X660 morethan enough for your system +OC
  2. Seasonic is a great company, that will be plenty for your one video card setup. If you plan to CF in the future, grab a beefier one, say around 750w
  3. Best answer
    The Seasonic X-Series 660W Model X-660 (SS-660KM Active PFC F3), with its +12 Volt continuous current rating of 54 Amps and four 6+2 pin PCI Express Supplementary Power Connectors, is enough to power a system using two Radeon HD 6950 graphics cards in 2-way CrossFireX mode.

    You'll also be happy with its full modular design.

    It should be able to handle any overclocking you may wish to attempt. That power supply is over-engineered so it should be able to deliver over 750 Watts on its DC Outputs.
  4. I'm curious on how you guys calculate the requirements.
    Based on the calculators I've used, some say it may not be enough.
  5. I read reviews on power consumption of video cards. The good reviews do a decent amount of testing and typically include full system power draw at load and idle. The online calculators are crap, they really don't give an accurate number. http://www.anandtech.com/show/4061/amds-radeon-hd-6970-radeon-hd-6950/24
  6. +1 bippedal, calculator is same as my think more power will enough .. That's need a lot of money :D
    Please read spec in expert footnote : you will more idea
  7. amsga said:
    I'm curious on how you guys calculate the requirements.
    Based on the calculators I've used, some say it may not be enough.

    I don't use the online power supply calculators.

    I use the knowledge I gained when I studied Electrical Engineering at university.
  8. Buy a Corsair AX650 or 750 to be on the safe side. ;)
  9. 008Rohit said:
    Buy a Corsair AX650 or 750 to be on the safe side. ;)


    Aren't Corsair's from Seasonic?
  10. Some PSUs corsair have OEM Seasonic :)
    and other made by CWT
  11. amsga said:
    Aren't Corsair's from Seasonic?

    Corsair currently uses three OEMs.

    CWT (Channel Well Technology), Flextronics and Seasonic.

    The CMPSU-1200AX 1200 Watt PSU is the only model made by Flextronics.

    The new Enthusiast TX series hybrid modular models CMPSU-550TXM, CMPSU-650TXM, CMPSU-750TXM and CMPSU-850TXM are all made by CWT and are just now appearing in the marketplace.
  12. Best answer selected by amsga.
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