Will my cpu bottleneck x2 gtx 580's?

Hey all

I'm thinking about buying two gtx 580 gpu's for my 3 years old rig.

This is my system now:

ASUS Rampage ii Extreme x58
Intel core i7 920 overclocked to 4ghz: 190 x 21, vcore is 1.25
6GB Patriot Viper Xtreme Memory (3 X 2GB) 1600mhz
Nvidia geforce gtx 275
Thermaltake toughpower 750w psu

I plan on getting Corsair AX 1200w in order to have overclocking room for the new gpu's.

Will my cpu keep up with those cards while gaming? and is this psu enough for the cards with a decent overclock?

Thanks in advance.
10 answers Last reply Best Answer
More about will bottleneck
  1. for sure i would get a better psu may 1200 watt and you cpu will be a bit of a bottleneck not much because you are using an x58 motherboard and pci 2.0 graphics caed
  2. oh sorry your gonna get a new psu
  3. Thanks, do you prefer coolermaster instead of corsair?
  4. It will need 488W just for the SLI 2x GTX 580, then it will need extra room for your OC.

    I would not get a PSU from COOLER MASTER tough.

    CORSAIR Professional Series Gold AX1200 (CMPSU-1200AX) 1200W
  5. I second that do not get the coolermaster. Go with the 1200w or this 1050w Corsair
  6. How much are you getting the 580's for? there maybe a better option for the price.
  7. Best answer
    1) you're cpu will NOT bottleneck a 580 SLI set up - all you're really doing is getting a 590 without as much microstutter with that configuration (believe it or not).

    2) that corsair PSU is a great choice and though folks are apprehensive of a coolermaster; the silent pro series are better than the usual garbage the put out. however the AX 1200 has slightly better efficiency across the board.

    Reviews - Corsair AX1200 1200W

    Reviews - Coolermaster Silent Pro Gold 1200W

    a single 580 will use ~ 250 watts each so you can drop down to a 1K watt PSU without having to worry. but if you are looking for an overclock to benchmark with; a bit higher won't hurt.

    now take this with a grain of salt: the way i understand it, the reference 580/570 use the same pcb and power phases and the MOSFETs on the power phases can get fried if you push an overclock too high (1.1 volt).

    i have been able to bench heaven @ 870 core/2000 mem 1.038 volts and play cyrsis2 850 core/ 2000 mem @ 1.038 volts stable.

  8. What games are you going to play? Every game is different, there is no one-size-fits-all answer.
  9. Best answer selected by moshik94.
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