Help selecting PSU for my setup

I haven't built a PC in prob 5 years so PSU's have changed a bit for me. My build is as follows:

ASRock 890FX Deluxe 4

1X Radeon HD 5770(possibly another in the future)

AMD Phenom II X4 955(possibly an X6 in the future)

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) (possibly 4GB more in the future)

2X Sata HD's


1x DVD Burner

1x Blu-Ray Burner(Possibly)

So as far as a PSU I've done a few calculators and they range from 460w-750w. This may be a stupid question as I am out of the loop with PCs but what is the purpose of multiple 12v rails? I read a review about the XFX Black Edition P1-750B-CAG9 750W PSU it seems pretty solid. I'm just not sure if its what I need for my build. I'm def open to any recommendations for PSUs. Any help is appreciated, thanks.-JC
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More about help selecting setup
  1. I think a good quality 550w will cover you for a XFire setup.

    Or this if you want to spend a bit more for Gold certified

    This will answer your single, dual rail questions
  2. The PSU you have selected is a very nice one. As beanoslim mentioned a good 550W would also do your job. But since you have already eyeing the 750W PSU, i would say you can go for it and be in peace with whatever GPU's you change in the future.
  3. So is a rail a connector or is it just the way electricity is divided and passed through to devices? Is dual rail 2 different connectors?
  4. jcammarata said:
    So is a rail a connector or is it just the way electricity is divided and passed through to devices? Is dual rail 2 different connectors?

    You're already a step ahead in that you use jonnyguru to research the psu you are interested in, here's some more research

    Power Supply FAQs
  5. Thanks for all the help...still not 100% on which PSU I'm picking so anybody with other recommendations throw em up. Thanks again.
  6. +1 to delluser1's observations. Another site that does excellent competent technical reviews is
    I don't know how much you want to spend, but the Seasonic "X" series are probably the best consumer PSUs out there now. They are overbuilt and can readily handle heavy loads. Check prices on the 560W and 650W models. To allow for all likely future possibilities, I'd suggest 650W (Seasonic, Antec, Corsair, Enermax or XFX are among the better brands); 550W-560W in any of these would probably do just fine, but for what's likely a very meager price difference, a 650W model may make more sense, especially when you consider it may have a few additional cables.
  7. Basically if you want the best choice to cover you now and if you get another 5770 and hex get the 560w Seasonic.

    If you want to futureproof yourself for a more powerfull system and want the best get the 750w version

    Otherwise if you want to save some money and cover current setup and 5770/hex upgrade go for the Corsair.

    IMO :)
  8. You can actually go a little easy on the PSU and in the process, go for a better video card..
  9. ^What did that mean? No one in his right mind would suggest a "cheap" PSU; the ones that have been discussed are actually capable of putting out well over their labeled rating. I'd prefer not to believe you were suggesting he go for a chokemax brand like Apevia or Raidmax.
    Of course, if you were suggesting trying to get something like a HD6850 instead, that's fine; a second one may not be needed in this build, ever. In that case, a less expensive but still quality 500W PSU like an Antec Earthwatts would be sufficient, or a 650W Truepower New would be less expensive than the Seasonics, but handle a second card also. Being [semi-]modular, you wouldn't have a mess of extra cables like you would with some of the Corsairs. If budget allows though, the Seasonic X-650 is still probably the best choice.
  10. I think he meant reduce the wattage and save the cash! :)
  11. ^oh yes.. That's what I meant exactly.. Moreover, a good 550W PSU will be capable enough to handle a Xfired 6850 setup..
  12. True, but often a 650W PSU will only be $10 more that the 550W model; I've seen this happen with both the Truepower New and the Seasonic "X" lines.
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