Will this PSU work for me?

Will this PSU cover all my needs? http://www.newegg.com/Product/Product.aspx?Item=N82E16817341003&nm_mc=EMC-IGNEFL040110&cm_mmc=EMC-IGNEFL040110-_-EMC-040110-Latest-_-PowerSupplies-_-17341003-LM6C

It's a OCZ 850W PSU
It outputs: +3.3V@30A,+5V@30A,+12V1@20A,+12V2@20A,+12V3@20A, +12V4@20A,-12V@1A,+5VSB@3.0A

My Computer has:
i7 920
Mobo(still searching)
2 Ati 5850 (Crossfire)
6 GB of Ram
60GB SSD
1TB HDD
DVD Drive
5 fans(1x120mm, 2x140mm, 2x230mm)

This is my first time building a computer so I want to make sure everything works out perfectly. Someone told me to make sure the railings work out before purchasing a PSU, so I was wondering if someone could help me with that? Thank you very much.
22 answers Last reply
More about will work
  1. It probably will meet your needs. A good 650 watter will meet your needs.

    Having said that, I don't think I'd buy this one. Two reasons - I don't like the pricing. $200, on sale at $90, rebated to $60 is almost too good to be true. A fair price for a good 850 watt PSU would be around $130.

    Second, you have no idea of what the total max 12 volt current capacity is. The PSU label is misleading because it doesn't tell you. I suspect that a 750 watt Corsair has more usable power:
    Corsair 750TX (60 amp 12 volt rail)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

    At any rate, it doesn't have independent 12 volt rails, so don't worry about that.
  2. GamexStreams are fairly mediocre FSP built units filled with cheap Chinese/Taiwanese caps. If you're going to buy a high-end system like that, then you should buy a high end PSU to power it:

    Corsair 750HX
    http://www.amazon.com/Corsair-CMPSU-750HX-Professional-Certified-compatible/dp/B0029F21LK/

    Corsair 850HX
    (only price gougers have it in stock currently)

    Seasonic x-650
    http://www.ewiz.com/detail.php?name=PS-SSX650G&title=SeaSonic-X650-Gold-650W-Power-Supply

    Seasonic x-750
    http://www.ewiz.com/detail.php?name=PS-SSX750G&title=SeaSonic-X750-Gold-750W-Power-Supply

    XFX 750w
    http://www.provantage.com/xfx-p1-750b-cag9~7PINE0JL.htm
    ^ Best deal IMO

    XFX 850w
    http://www.provantage.com/xfx-p1850bcag9~7PINE0HP.htm

    Note: I didn't use newegg because their prices are higher on all of those.
  3. Here are the official power requirements for the ATI Radeon HD 5850 video cards.


    ATI Radeon™ HD5850 System Requirements:

    PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

    500 Watt or greater power supply with two 75 watt, 6-pin, PCI Express® power connectors.

    600 Watt or greater power supply with four 75 watt, 6-pin, PCI Express® power connectors for ATI CrossFireX™ technology in dual mode.

    The recommendation is for an entire pc system.

    Corsair and Seasonic are two brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty.
  4. Thanks for the review guys, I really appreciate it. I do have another question, I don't if it's possible, but are you able to run a computer with two separate PSUs? Like for example to 500w?
  5. The answer to your questions is yes. It is possible to run a computer using two power supplies and an adapter cable.

    http://www.frozencpu.com/products/5637/cpa-167/Lian_Li_Dual_Power_Supply_Adapter_Cable.html?tl=g2c413s91
  6. JohnnyLucky said:
    The answer to your questions is yes. It is possible to run a computer using two power supplies and an adapter cable.

    http://www.frozencpu.com/products/5637/cpa-167/Lian_Li_Dual_Power_Supply_Adapter_Cable.html?tl=g2c413s91


    Would you suggest that be a good idea? Or is it better to stick with just one large PSU?
  7. I'd use an Antec EA-650 for $79 for twin GFX cards (9.0 jonnyguru performance rating)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371015
    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=110

    or a EA-500 for $45 for one GFX card (9.5 jonnyguru performance rating)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007
    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=35

    Alternates:

    Corsair 550VX for $79 after $10 MIR (9.5 jonnyguru performance rating)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004
    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=62

    Corsair 650TX for $89 after $10 MIR ... (No review on TX650 but TX750 gets an 8.5)
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005
    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story4&reid=73

    Given the price / performance ratings, the Antec's look like the easy choice here at today's prices. Of course if doing serious OC's (over 4 Ghz) and twin GFX, I'd move up in both size and quality to Corsair HX / Antec SG series. At this level the Corsairs will have the price advantage.
  8. One large power supply is recommended.
  9. JohnnyLucky said:
    One large power supply is recommended.


    Alright, I appreciate the help. One more question. I want to test out the fans in the case I just got, so i planning on using my brother's PSU that's in his computer right. To do that, where exactly do I connect the fan wires to on a PSU? That's the only part of a computer I've never really worked with.
  10. Case fans can be connected to a power supply 4 pin molex power cable.

    If the fan does not have a 4 pin molex connector, then an inexpensive adapter cable can be used. Here's one that can be used to connect up to four cases fans to one 4 pin molex connector:

    http://www.frozencpu.com/products/8780/cab-163/FrozenCPU_Standard_4-Pin_to_Quad_3-Pin_Adapter_Cable_PFP18.html?tl=g2c251
  11. Tested and working at my end. You can go ahead
  12. JohnnyLucky said:
    Case fans can be connected to a power supply 4 pin molex power cable.

    If the fan does not have a 4 pin molex connector, then an inexpensive adapter cable can be used. Here's one that can be used to connect up to four cases fans to one 4 pin molex connector:

    http://www.frozencpu.com/products/8780/cab-163/FrozenCPU_Standard_4-Pin_to_Quad_3-Pin_Adapter_Cable_PFP18.html?tl=g2c251


    Ok so I think I get it, I'll find out in about an hour, but they seem to be where one side is male, and the other is female for each connection. can I connect all the fans to together, then have one connection to the PSU? If that makes sense.

    And will the PSU be labeled where the 4 pin connection is supposed to go?

    Sorry for all these questions, I just don't want to mess up now.

    OH and all the fans have 4-pins(There are 5 fans)
  13. You can gang them all together on one PSU Molex.
  14. JackNaylorPE said:
    You can gang them all together on one PSU Molex.


    Thank you Very much!! Tried it and all fans work perfectly.

    Ok I found a PSU with pretty good reviews, now just want to hear your guy's opinion on this: http://www.newegg.com/Product/Product.aspx?Item=N82E16817153104
  15. Better deal:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

    Corsair is a brand that has a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty.
  16. JohnnyLucky said:
    Better deal:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

    Corsair is a brand that has a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty.


    I was thinking of getting that, it's just I have a $10 coupon that works on the Thermaltake PSU. My original plan was to spend $70 on a PSU, so I'm debating if I should wait longer for a better deal for a 750W
  17. delluser1 said:


    This one actually looks pretty good. Just to be sure, will this be able to run the build I suggested in the first post?
  18. Just as well as any other good quality 750
  19. So since this has 12V rails with 25Amps, will that be able to run 2 high end graphics cards? Not necessarily the two 5850s I suggested. As in, later on in the future if I want to upgrade my GPUs, will this be able to power them?
  20. The deal ends tomorrow, will this PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371025&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-RSSDailyDeals-_-na-_-na&AID=10521304&PID=3463938&SID=

    Be able to un 2 high end graphics cards? For example...2 X 5850s, or 2 X 480s?
  21. not 2 nvidia cards you need least 850 watts for them but 2 ati cards will be fine
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