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How many watts do I need?

So a friend of mine is upgrading to a GTX 770 and I am buying his GTX 560 Ti to SLI. Right now I have a 700W Xtreme power supply which I don't trust with SLI. Any suggestions for which power supply I should get?

Also in my pc:
Core i5 3570K
ASRock z77 extreme4 motherboard
8GB of DDR3 1600mhz Corsair Vengeance
1TB drive
Corsair H50 cooler
19 answers Last reply Best Answer
More about watts
  1. I'd go with 600w to be safe.
  2. you can go for a 750 or 850W PSU
  3. Byte70 said:
    I'd go with 600w to be safe.


    would 600W be enough for SLI
  4. SamiSC said:
    you can go for a 750 or 850W PSU


    Really? It's a z77 mobo, only 8gb of RAM, and an i5. If you really wanted to push it, I'd say you could go with a 500w (not recommended.)
  5. A good quality 750w will power your rig
  6. Buy a 750W From XFX , EVGA or Seasonic
  7. oh. Just saw he was gonna sli. nvm. 750w.
  8. GPUs are 400w together. 200w extra for the rest of the system plus some wiggle room, 600w is plenty.
  9. nvalhalla said:
    GPUs are 400w together. 200w extra for the rest of the system plus some wiggle room, 600w is plenty.


    I thought this too, but you have to take into consideration he will SLI with a 770 and 560.
  10. drkatz42 said:
    A good quality 750w will power your rig


    What would you recommend?

    I've been looking at these:
    Corsair CX750M
    EVGA Supernova
    and Thermaltake Smart Series
  11. Byte70 said:
    nvalhalla said:
    GPUs are 400w together. 200w extra for the rest of the system plus some wiggle room, 600w is plenty.


    I thought this too, but you have to take into consideration he will SLI with a 770 and 560.


    Sorry if I wasn't clear, I will SLI with two 560s
  12. His friend is getting the 770, so he will take his friends 560. Thats the way I read it. The 560 has a max draw at 225w each. You won't pull that, especially when in SLI. 400w is a safe estimate for both cards together. 600w should be fine, as long as the quality is good
  13. Byte70, did you read that it was SLI? o.o

    I believe 500 would be too low... 750 would be my choice to have some headroom, but maybe with 600 or 650 you might pull it off...
  14. I never said 500 I said 600, and then I corrected myself and said, 750w would be better since its SLI
  15. A reliable 650W will do but a 750W will have him on the safe side of things. The EVGA Supernova is the best out of these
  16. You did say 500 but not recommended :P
  17. Oh, yeah, I said (without knowing it was SLI) he could possibly pull it off.
  18. exactly like i said at first 750 to 850 for good headroom
    EVGA, XFX, seasonic or antec would be good choices.

    http://pcpartpicker.com/part/antec-power-supply-hcg850m

    or if you want a full modular
    http://pcpartpicker.com/part/evga-power-supply-220g20750xr

    both less that $100
  19. Best answer
    For SLI you should go to 850w and this is the best one on the planet.

    PCPartPicker part list / Price breakdown by merchant

    Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($109.99 @ Newegg)
    Total: $109.99
    Prices include shipping, taxes, and discounts when available
    Generated by PCPartPicker 2014-08-05 21:04 EDT-0400


    Summary:

    Buy one. Do I really need to say anything else at this point? Once again, EVGA has something awesome here the competition can't seem to touch price wise. Performance? There are better units, yes. Not very many, but they exist. The real story here is how EVGA keeps managing to offer this kind of performance and still be more affordable than nearly everything else out there, and they have pretty much found perhaps the only OEM on Earth capable of doing it for them. It's got to be real nice being EVGA right now.

    The Good:

    outstanding ripple suppression
    excellent voltage regulation
    fully modular
    semi-fanless mode
    nice blacked out cabling

    The Bad:

    nothing at all

    The Mediocre:

    reviewing awesome units is getting dull... where's that gutless wonder in my pile? Second in line? Well, at least I'm guaranteed something interesting in all the wrong ways in a couple weeks...

    Jonnyguru summary on the EVGA 850W ^
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