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Do I need 650w or 750w for this build?

Kravek
  • 28 months ago

I'm new here, and I'm currently trying to make my last few part decisions. With this build, PCPartpicker estimates 479w. Is 650w more than enough, or should I go for the 750w? I'm not too familiar with how much higher you want your max wattage to be.

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel - Core i7-8700K 3.7GHz 6-Core Processor $370.59 @ SuperBiiz
CPU Cooler CRYORIG - H7 49.0 CFM CPU Cooler $34.89 @ OutletPC
Motherboard Asus - ROG STRIX Z370-E GAMING ATX LGA1151 Motherboard $189.99 @ Amazon
Memory G.Skill - Trident Z RGB 16GB (2 x 8GB) DDR4-3200 Memory $199.89 @ OutletPC
Storage Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive $168.87 @ OutletPC
Storage Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive $59.89 @ OutletPC
Video Card EVGA - GeForce GTX 1080 Ti 11GB FTW3 GAMING iCX Video Card $909.99
Case NZXT - S340 Elite (Black) ATX Mid Tower Case $79.99 @ Newegg
Power Supply EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply $96.98 @ Newegg
Operating System Microsoft - Windows 10 Home OEM 64-bit $89.89 @ OutletPC
Case Fan Noctua - NF-S12B redux-1200 PWM 59.1 CFM 120mm Fan $13.95 @ Amazon
Case Fan Noctua - NF-S12B redux-1200 PWM 59.1 CFM 120mm Fan $13.95 @ Amazon
Monitor Asus - PG279Q ROG Swift 27.0" 2560x1440 165Hz Monitor $741.56 @ Amazon
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $3010.43
Mail-in rebates -$40.00
Total $2970.43
Generated by PCPartPicker 2018-02-05 20:38 EST-0500

Comments

  • 28 months ago
  • 2 points

You can get away with only a 550 watt PSU. That PC would draw around 300 watts under load.

  • 28 months ago
  • 2 points

550w is enough. Right now you can get a good deal on this PSU though, so I often recommend that one.

  • 28 months ago
  • 2 points

If you want to OC, 650W would allow for some headroom.

  • 27 months ago
  • 2 points

If you plan on doing any overclocking I'd get at least a 750w. It is the very beating heart of your system! Just imagine you are powering your grandmother’s pacemaker. Don’t start thinking…”well if I go for that second tier PSU for my Grandmother's pacemaker, I can afford a better GPU!"

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