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PSU requirements for future build (EVGA GTX 1080 FTW SLI), need some advice.

Kokopinos

39 months ago

Would a Corsair HX850i be enough to power my future build?

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i7-6700K 4.0GHz Quad-Core Processor $324.89 @ OutletPC
CPU Cooler Corsair H100i v2 70.7 CFM Liquid CPU Cooler $94.99 @ Newegg
Motherboard Asus Z170-DELUXE ATX LGA1151 Motherboard $299.99 @ B&H
Memory Corsair Vengeance LED 32GB (4 x 8GB) DDR4-2666 Memory $180.65 @ Amazon
Storage Samsung 950 PRO 256GB M.2-2280 Solid State Drive $184.99 @ B&H
Storage Samsung 850 EVO-Series 1TB 2.5" Solid State Drive $305.50 @ Amazon
Storage Western Digital BLACK SERIES 2TB 3.5" 7200RPM Internal Hard Drive $119.88 @ NCIX US
Video Card EVGA GeForce GTX 1080 8GB FTW Gaming ACX 3.0 Video Card (2-Way SLI) $679.99 @ B&H
Video Card EVGA GeForce GTX 1080 8GB FTW Gaming ACX 3.0 Video Card (2-Way SLI) $679.99 @ B&H
Case Cooler Master Storm Stryker (White) ATX Full Tower Case $147.98 @ Newegg
Power Supply Corsair 850W 80+ Platinum Certified Fully-Modular ATX Power Supply $144.99 @ Newegg
Optical Drive Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer $18.88 @ OutletPC
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $3237.72
Mail-in rebates -$55.00
Total $3182.72
Generated by PCPartPicker 2016-09-17 12:46 EDT-0400

I'm worried about the power requirements of those 2x EVGA GTX1080 FTW in SLI.

I'm also planning to overclock both the CPU and the GPUs.

Comments

  • 39 months ago
  • 1 point

Should be enough. Even with both GPUs over clocked it'll still have enough headroom.

  • 39 months ago
  • 1 point

Thanks for the reply. I was worried because the peak GPU power draw for EVGA GTX1080 FTW is listed above MSI's Gaming X card and even ASUS STRIX OC. I've also seen some benchmarks where a single EVGA FTW is overclocked, and the total PC power consumption reached 445 Watts at peak load. I guess i should be fine then right?

[comment deleted]
  • 39 months ago
  • 1 point

I have a Cyberpower 1500 VA PFC Sinewave UPS which can output up to 900 Watt. There is an issue with constant blackouts and power spikes here in my hometown. Will the UPS be capable of supporting a 1000 Watt PSU?

[comment deleted]
  • 39 months ago
  • 1 point

I even used the Coolermaster Power Supply Calculator. And although you can only fill the form with reference cards, it gave me these results.

Load Wattage: 682

Recommended PSU Wattage: 732

Recommended Power Supply: Some random 850W Coolermaster PSU lol

The requirements for the 2x Evga FTW cards can't be that far from these results right?

  • 39 months ago
  • 1 point

Just a note, Skylake does not support quad-channel RAM. You would need an X99 Chipset Mobo with Haswell-E / Broadwell-E.

  • 39 months ago
  • 1 point

I know, bought them just for aesthetic reasons and price.

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