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How much wattage does 2X GTX 780 TI in SLI need?

I'm not sure how much wattage I need for a power supply unit.
Parts:
Asus Maximus VI Hero
I74770K
2X GTX 780 TI SLI
4TB HDD
120GB SSD
6 Fans
3 answers Last reply Best Answer
More about wattage gtx 780 sli
  1. You at least need 800w. If you want to overclock gpu and cpu and you will need more headroom, and then go for 1000w. Ensure you get a quality unit.
  2. I would get at least 850W, but if you are planning to OC you should get a bigger one.
  3. Best answer
    A system with an i7 3960@ 4.6Ghz and 2 780ti's pulled 617w(total for the system not just the GPUs)
    http://www.guru3d.com/articles_pages/gtx_780_ti_sli_geforce_review,4.html
    So really a good 750w PSU would work, but I'd still recommend 850w especially if you want to OC.
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