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Choosing the right PSU for upgrading. [I messed up!]

macksfield
  • 52 months ago

With my current build, I am running 1 MSI R9 390 graphics card, but eventually I plan on upgrading to 2x with SLI and adding a lot more storage and fans. However, I chose to use a 750W PSU, and I'm realizing this gives me no room for upgrades. Is a 1300W PSU overkill? Would 1000W be more appropriate?

I am assuming the Wattage that PCPP lists is the maximum, and not the average. So mostly likely I will never get up to 812W that it lists... So maybe 1000W is the way to go?

Current build: PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i5-6600K 3.5GHz Quad-Core Processor $254.99 @ Amazon
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler $19.99 @ Newegg
Motherboard MSI Z170A GAMING M5 ATX LGA1151 Motherboard $164.99 @ Amazon
Memory Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 Memory $95.99 @ Amazon
Storage Sandisk Ultra II 960GB 2.5" Solid State Drive $249.99 @ Adorama
Storage Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive $45.99 @ SuperBiiz
Video Card MSI Radeon R9 390 8GB Video Card $309.99 @ Newegg
Case Phanteks Enthoo Pro ATX Full Tower Case $99.99 @ Amazon
Power Supply EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply $103.86 @ Mac Mall
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $1355.78
Mail-in rebates -$10.00
Total $1345.78
Generated by PCPartPicker 2015-12-02 17:20 EST-0500

Projected future build: PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i5-6600K 3.5GHz Quad-Core Processor $254.99 @ Amazon
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler $19.99 @ Newegg
Motherboard MSI Z170A GAMING M5 ATX LGA1151 Motherboard $164.99 @ Amazon
Memory Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 Memory $95.99 @ Amazon
Storage Sandisk Ultra II 960GB 2.5" Solid State Drive $249.99 @ Adorama
Storage Sandisk Ultra II 960GB 2.5" Solid State Drive $249.99 @ Adorama
Storage Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive $45.99 @ SuperBiiz
Storage Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive $45.99 @ SuperBiiz
Storage Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive $45.99 @ SuperBiiz
Video Card MSI Radeon R9 390 8GB Video Card (2-Way CrossFire) $309.99 @ Newegg
Video Card MSI Radeon R9 390 8GB Video Card (2-Way CrossFire) $309.99 @ Newegg
Case Phanteks Enthoo Pro ATX Full Tower Case $99.99 @ Amazon
Power Supply EVGA SuperNOVA 1300 G2 1300W 80+ Gold Certified Fully-Modular ATX Power Supply $184.99 @ SuperBiiz
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $2088.87
Mail-in rebates -$10.00
Total $2078.87
Generated by PCPartPicker 2015-12-02 17:19 EST-0500

Comments

  • 52 months ago
  • 3 points

1300 watts is a just stupid, about 500 more than needed, a 750 watt psu would do but it would be too close for comfort, I would recommend getting a 850 watt psu.

  • 52 months ago
  • 1 point

Even if the upgraded PC is estimated at 812W of consumption? I've read it's not a good idea to max out the PSU, and one should try to hit 50-80% usage.

  • 52 months ago
  • 2 points

That is PCPP estimating which isn't always correct nor accurate. Two R9 390's would use around 500 watts , according to PCPP the rest of the build would use around 200 watts, you would have around 50 watts left give or take a few with nothing overclocked, would it work yes? Would it be a good idea? No. With 850 watts you would have around 150 watts of headroom, a comfortable amount of wattage left.

  • 52 months ago
  • 1 point

I'm confused on how you see 850W as having 150W of headroom. Are you saying the 812W rating from PCPP is an overestimation?

  • 52 months ago
  • 1 point

re you saying the 812W rating from PCPP is an overestimation?

Yes.

  • 52 months ago
  • 1 point

Yes, very overestimated.

  • 52 months ago
  • 1 point

I would go with atleast 1000w, i like the sound of 1200 better though

  • 52 months ago
  • 1 point

NAhh, 850w is plenty. 1000w is the MOST I would use for a PC like that.

  • 52 months ago
  • 1 point

very long and repeatedly revisited story short: 850 watt is perfect. 1000 watt MAX!! that's it.

  • 52 months ago
  • 1 point

Even with normal overclocking?

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