Help choose my power supply, please

I have no idea where to start when it comes to choosing a power supply. I am building a PC for gaming. I know that my video card says I need at least a 500W power supply... other than that I am in the dark. Could anyone please tell me a good power supply to choose? I would also like to know how many watts I'll need for this rig, and any other information you think could help me would be much appreciated. Thanks

Here are the parts I will be using. (If there is anything I should have listed but didn't please tell me.)

Mobo: ASUS P9X79 LE

Processor: Intel Core i7-3820

Video Card: 2GB DDR5 Radeon HD 7870

RAM: Kingston HyperX 8GB

Hard Drive: HGST Deskstar 2TB 7200 RPM
23 answers Last reply
More about choose power supply please
  1. A 500W PSU should be just fine in ur case.

    The power needed by the video cards is usualy exaggeraed by the company.

    It wont use more than 180W, even at full power. The HD 7 series is designed to consume less power.
  2. Make sure the power supply you buy is from a good quality brand. Often power supply's are rated in unrealistic conditions and just die when you plug it in.

    Good Brands are - XFX, Corsair, Siverstone, Antec, CoolerMaster and OCZ
  3. Thanks guys : )
  4. Corsair TX650V2
    Its a very high quality unit & will provide enough power to your rig & will also be sufficient for two 7870s if you plan to crossfire in the future.

    If there's no plan to crossfire in the future & are looking for a cheaper PSU, then get the Seasonic M12II 520W
    Again, A very high quality unit, quite sufficient for you rig & its modular as well.

  5. if it's a gaming build, 1155>lga2011.
    you can save some money and get a better gpu.
  6. Seasonic 660w Gold
  7. ^any good reason for that?
  8. I'm curious about the 1155> LGA 2011. Could explain why and maybe recommend a few products for me to look at as a reference for what kind of specs I should be looking for? I'd have to change my mobo and processor.
  9. LGA2011 is for server based systems or workstations.1155 is best platform for gaming.a 3570k or 2500k will give you the best possible gaming cpu performance for less.
    7870 is good but i guess you can fit a 670 in your budget.
    what's your max budget?
  10. I'll post all the parts I have. I was hoping to stay around $1500 but I suppose I'll be willing to go up to about $1800.

    I have changed some stuff since the first post.


    PSU: CORSAIR Enthusiast Series TX850

    Mobo: ASUS P9X79 DELUXE

    CPU: Intel Core i7-3820

    Hard Drive: HGST Deskstar 2TB 7200 RPM 32MB Cache

    Video Card: Power Color 2gb gddr5 amd radeon HD 7870

    RAM: CORSAIR Vengeance 8GB

    Optical Drive: LG Black 4MB Cache SATA BDXL Blu-ray Burner,3D

    Sound Card: Creative Sound Blaster X-Fi Xtreme Audio

    Media Reader: StarTech 22-in-1 Multi Media Memory Card Reader

    Cooling System: ZALMAN CNPS20LQ Ultimate Liquid CPU Cooler

    Again, this is my first time selecting ALL the parts to build a computer. Please suggest... well anything and feel free to correct me and add necessities or take away stupid stuff.

    If possible I'd like to build a top of line computer(or close) for about $1500 and have it last me ages with little to no upgrading for the next couple years. I'm looking mostly to play MMOs at top performance but also dabble in various other things like photoshop, graphics design and such. I'm basically looking to be able to run several games at once or watch tv and run games at the same time. (Let's factor internet connection out of this, lol.) In the end I'd like to stop using a console forever and play everything on my computer as I did in the past.

    $1,400-$1,800 is the budget.
  11. drop down to 3700k/UD5H setup and use the saved money for 670.sound card is not required unless you have $400 speaker system lol.closed loop coolers suck! hyper 612 pwm is a better and more reliable choice.
  12. Keep in mind, I'm a bit stupid. I got it all after the "drop down to 3700k/UD5H setup and use the saved money for 670." Could you elaborate a bit more, please?
  13. for gaming/video editing build,3770k will do fine.if you want x79,go with 3930k(but that's useless for you).670 is significantly better than 7870 plus cuda cores will also help you in editing apps that support gpu acceleration.
  14. ^not V6 GT,it's loud.
    for single card,550w for SLi,750w.
  15. The TX650v2 could handle a GTX670 SLi, right?
  16. i don't think so-
    but yeah,750w will easily handle 670 SLi and overclocks.
  17. So this would be the way to go? ASUS P8Z77 ( )?

    And you're saying GeForce GTX 670 2GB 256-bit GDDR5 is > Radeon HD 7870 GHz Edition 2GB 256-bit GDDR5? The price difference is huge its basically $399>$289. Is the performance really that much greater or am I looking at something totally wrong?
  18. this board-
    and for 670 vs 7870,IMHO the 670 is worth the price tag.

    670 rocks even with stock clocks.with some overclocking,it beats a stock 680!
    what more can i say?
  19. Oh, okay thanks a ton : )
  20. Okay so I decided to go 3770 instead of 3770k (there was only one difference and I didn't think it made too much of a difference, correct me if I'm wrong.)

    Also will the 750w PSU be able to support all of this?

    I went with the changes you recommended, Hellfire. That being the board you posted and the 670 video card.
  21. I would say go for the K version. It gives you the option to boost your CPU performance.
    You may not have any plans for overclocking now, but the"K" version keeps the option open for the future.
    That little price difference is worth it.

    You can opt for a GTX570 or GTX580 if you want to save some $$$

    For a single GPU rig the Seasonic M12II 520W is sufficient.
    Its a high quality modular PSU & its fairly cheap.
  22. ^no need to go with 5xx cards.
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