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Is 1.5x necessary?

JollyGreen
  • 29 months ago

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU AMD - Ryzen 5 1600X 3.6GHz 6-Core Processor $219.58 @ OutletPC
CPU Cooler CRYORIG - H7 49.0 CFM CPU Cooler $28.90 @ Newegg Marketplace
Motherboard Asus - STRIX B350-F GAMING ATX AM4 Motherboard $102.89 @ OutletPC
Memory G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3000 Memory Purchased For $122.99
Storage Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive $148.88 @ OutletPC
Video Card MSI - Radeon RX VEGA 56 8GB Video Card Purchased For $403.98
Case NZXT - S340 Elite (White) ATX Mid Tower Case $89.99 @ Amazon
Power Supply SeaSonic - FOCUS Plus Gold 750W 80+ Gold Certified Fully-Modular ATX Power Supply $79.90 @ Newegg
Keyboard Corsair - K70 LUX RGB Wired Gaming Keyboard $154.99 @ Amazon
Mouse Razer - Lancehead Tournament Edition Wired Optical Mouse $63.87 @ Amazon
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $1445.97
Mail-in rebates -$30.00
Total $1415.97
Generated by PCPartPicker 2017-11-13 16:15 EST-0500

Going off of the newegg calculator I need a PSU that can handle over 700w. I've seen before that having one that is 1.5x is enough, so then I could get a 600w. Even then most of the builds I see go for the 550w. Any recommendations on what I actually need?

Comments

  • 29 months ago
  • 4 points

There's a thing about wattage calculators that you should notice. If a calculator is made by a shop that sells power supplies, then it's probably in their best interest to "calculate" much higher wattage than you actually need, to sell you a more expensive and powerful power supply. Indeed, your load power consumption will be as low as the other comment.

  • 29 months ago
  • 2 points

Your PC will only draw around 300 watts. All wattage calculators are inaccurate by a large margin.

Go for a 550 watt unit. It's all you'll need. If you plan on getting a 1080 ti, then get a 650 watt though you could get by with a 550 watt.

  • 29 months ago
  • 2 points

Vega likes power, especially overclocked.

That said even planning 375W peak, the rest of your system likely wouldn't use more than 200W under synthetic load. A quality 650W unit would serve you just fine. That said, after rebate the Focus Plus 750W is cheaper than the 650W, so you might as well get it.

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