Recommended PSU for an x58/i7930 Build

Hi Tom's folks! This is my first post, after reading the forums for years. Thus, I'll be succinct and (hopefully) not ask anything that's already been asked.

I currently have a BFG 12v/650W PSU that I'd like to use in the following (new) build:

All from

AZZA Solano 1000 Black/Black Japanese SECC Steel/Metal mesh in front ATX Full Tower Computer Case
Western Digital Caviar Black WD6402AAEX 640GB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive X2
SAPPHIRE 100282-3SR Radeon HD 5850 (Cypress Pro) 1GB 256-bit DDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card w/ Eyefinity
G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory Model F3-12800CL9T-6GBNQ
ASRock X58 Extreme 3 LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i7-930 Bloomfield 2.8GHz LGA 1366 130W Quad-Core Desktop Processor Model BX80601930
Microsoft Windows 7 Home Premium 64-bit

Although I'll assuredly end up crossfiring another 5850 in a year or two, don't factor that into the above situation just yet (that is, I'm hoping to put off upgrading my PSU to when I buy the 2nd gpu). My main concerns are the GPU and case potentially eating more power than average, as well as the CPU being on the hungrier side as well. Do I need more wattage? Something different? Please let me know your thoughts, and thanks for your help!

(And, of course, if you have any recommendations for part substitutions, feel free to tell me. Seriously, thanks!)
14 answers Last reply
More about recommended i7930 build
  1. I recommend Ultra x 4 PSU can be found at Go at least 850 or 1050
  2. I see the Corsair 650TX is also on sale at for less than the 550TX This is an excellent PSU.

    The newer 500GB platter design hard drives will be faster than that WD 640. The 640 is not a bad drive ( I have 2 ) but it is dated now. Look for a Samsung Spinpoint F3 , WD Black or Seagate 7200.12 in 500GB increments .....500GB, 1TB, 1.5TB or 2TB. The Spinpoint is probably the best "bang for your buck" right now.

    I like Gigabyte motherboards best and ASUS as a second choice myself. That is like the argument between BMW/Mercedes or Ferrari/Lamborghini. Both are great but you like the one you have best ;) ASRock has a better reputation now than they used to but in my opinion they are not up to the same level as Gigabyte/ASUS.

    You can do better on memory. That is cas latency 9 and I would look for cas 7 or 8 at the highest. 7 would be fastest.

    Just my 2 cents. Hope it helps some.
  3. This is why I love Tom's so much: post a problem, you'll have an answer or two in an hour :)

    Totally agreed on the memory, I hadn't realized I was undercutting myself latency-wise. Instead, how about...

    G.SKILL PI Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7T-6GBPI

    ...look better? Methinks yes.

    As for the PSU, I'll admit I'm a little confused. How big of a difference is the Corsair compared to the BFG I've got at the ready? Since they're both 650W, I'm inclined to think it's (just) a quality difference?

    Fox, re: your suggestion to go with an >850W supply--is that factoring in the eventual xfire or do you think I'll need that just with this first set of components?

    Thank you both (and anyone else to follow)!
  4. Oh, durr: as for your mobo recommendation, anort, what about the Asus P6X58D-E? Seems like the better buy, especially since I won't have to OC memory settings right off the bat.

    Thanks again, folks!
  5. Then again, since the Asus is currently sold out, the Gigabyte GA-X58A-UD3R may be best of all...
  6. Corsair PSU is MUCH higher quality than the BFG. The Corsair has a single 52 amp 12v rail for rock solid stability.

    That is a much better memory choice and a much better motherboard.

    As for the suggestion from Fox......I avoid Ultra products myself. The X4 is supposed to be decent but the whole line of Corsair PSUs are top quality and some Ultra units have had issues in the past. He is correct in that 850w is about the minimum for 2 x 5850s. Corsair also makes an 850w unit that again is of the highest quality if you are looking to futureproof. I just suggested the 650 in regards to your first post and the sale I mentioned.
  7. Yep just noticed ASUS board was sold out. I like that Gigabyte better anyway. Their UD series of both Intel as well as AMD boards of all socket types are excellent in my experience.

    Edit: Post the model of that BFG PSU and I will check it out. They have had quality issues in the past as well and that 5850 is quite power hungry. It probably is fine for what you have with no Crossfire.
  8. Hello,

    Keep the BFG 650Watt PSU (it's Plenty for your build) Until Your Ready to go Crossfire, then Upgrade it with a 850Watt MINIMUM PSU from Corsair, Antec, OCZ... Forget Ultra, they may lOOk cOOl, but they are JUNK!!!
  9. Cue the clouds parting, darts of blinding light jetting forth from the sky...

    Okay, double-checked everything and I'm totally wrong: I hve a 600W OCZ supply from around 2008. I'd mistaken assumed I had a different PSU in my machine--my bad!

    As such, I suppose this entire thread is moot, as a new PSU I do now need...

    Corsair 850W+ it'll be. I'm sorry for kind of wasting your time, folks! The suggestions you've given me were/are very helpful though, and I've made some good changes due to them, I think. Thanks again!
  10. No. No. No.

    Don't listen to them. Buy what I bought. THe greatest PSU ever. For the money can't be beat. Fits all my needs.

    That's what I bought. If you don't want to pay $60 premium for modular cables, get this.

    You're welcome.
  11. Hmmm...with this much money going into it already, I'd consider going for the modular cables. My final question, then, is whether to go for 750 or 850 watts? 30 bucks isn't much compared to the rest of the budget, but shaving off every bit helps. What do you folks think I could get away with?
  12. You don't need 850W!

    From ATI's web site on the HD5850:
    500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)

    Antec, Corsair, and Seasonic are among the better brands. If I were the one building, I'd probably want an 80+ gold certified Seasonic X-650, or an 80+ bronze 650W Antec Truepower New.
  13. Thank you, J. I'm quite a bit noobish still, and I was fairly unclear whether those manufacturer recommendations were for the card solely (i.e.--the card itself needs at least 500W) or for an overall build. It always struck me as seeming like ATI or Nvid wouldn't be able to recommend what an overall build would need (as that varies significantly from machine to machine, no?), but I'll trust yeh! It'll save quite a bit of scratch to go with only what I need (600-650W or so) than to opt for a monster. Thanks!
  14. JTT is right. I was thinking 5870s in Crossfire for some reason. So back to my first post that Corsair 650TX that is on sale would be fine for 2 x 5850s. Sorry about that. It is true though that you really can not have "too much" power. I have this Corsair 750TX because I got it on super sale not because I really need it. It is nice not having to factor a new PSU in future upgrades too.
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