PSU Question

Im considering getting another gtx 260 to run in SLi but I want to make sure I have enough juice. Im new to system building so I just want to make sure. I also would like to be able to overclok the cpu/gpus and maybe add a fancontroller.

stuff:
eVGA 790i Ultra Sli
intel q9550
4gb ddr3
eVGA gtx 260 (192)
Coolermaster UCP 700w
3 case fans (CM 690 stock)

If I need a new psu, suggestions?
7 answers Last reply
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  1. Two GTX260 video cards operating in SLI mode will draw about 350 watts and 30 amps at full load. The rest of a high end system that is overclocked will draw about 250 watts. That comes out to 600 watts at full load. A good 700 watt cpu will be fine.

    The CoolerMaster UCP 700 watt psu lists a series of four +12 volt rails rated at 19 amps each. I kind of wondered about the four rails at 19 amps each. Some of the advertising indicated it had one large 12 volt rail.

    JonnyGuru.com did a technical review of of the psu just last month. During the test it was discovered the unit uses one big 12 volt output to supply the four 12 volt rails and the two VRM's. Here's a link to the complete review:

    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=141

    Do you already have the power supply?
  2. Should be fine. Have fun with the new card... you're sure to see a great improvement even if the slot you'll be putting the card into is x8.
  3. JohnnyLucky said:
    Two GTX260 video cards operating in SLI mode will draw about 350 watts and 30 amps at full load. The rest of a high end system that is overclocked will draw about 250 watts. That comes out to 600 watts at full load. A good 700 watt cpu will be fine.

    The CoolerMaster UCP 700 watt psu lists a series of four +12 volt rails rated at 19 amps each. I kind of wondered about the four rails at 19 amps each. Some of the advertising indicated it had one large 12 volt rail.

    JonnyGuru.com did a technical review of of the psu just last month. During the test it was discovered the unit uses one big 12 volt output to supply the four 12 volt rails and the two VRM's. Here's a link to the complete review:

    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=141

    Do you already have the power supply?


    Yes I do
  4. mamw93 said:
    Should be fine. Have fun with the new card... you're sure to see a great improvement even if the slot you'll be putting the card into is x8.


    Thanks. x8? (forgive my noobness)
  5. dont worry about x8

    Idk what mamw93 is talking about when the 790i Ultra has full x16 slots
  6. OK! It's a done deal and your psu will do okay.
  7. thanks guys
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