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Upgrading a modular power supply - Do I need to rewire everything anyway?

Valkrex
  • 49 months ago

So I'm upgrading from this (EVGA 850 W G2)

http://www.newegg.com/Product/Product.aspx?Item=N82E16817438018&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker%2c%20LLC-_-na-_-na-_-na&AID=10446076&PID=3938566&RandomID=790371991192446020160318010354

to the 1300 W version here

http://www.newegg.com/Product/Product.aspx?Item=9SIA24G28N5238&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker%2c%20LLC-_-na-_-na-_-na&AID=10446076&PID=3938566&RandomID=790371991192446020160318010354

Recently picked up a second graphics card and the 850 W, while it worked extremely well (seriously, GREAT PSU), was closer to the borderline than I would like. As in too close to even consider overclocking and I think I was getting a power bottleneck. I also just want to get myself closer to that efficiency sweetspot.

So the big question I have is do I need to go in and take all the wiring out from the old PSU and rewire everything, or can I just take out the back block and swap in the new one since its pretty much the same model, just with a higher wattage?

Comments

  • 49 months ago
  • 2 points

For two GTX 980 Ti's you have plenty of wattage, there is no need to upgrade your psu.

  • 49 months ago
  • 1 point

Please do not use link shorteners on our site.

  • 49 months ago
  • 1 point

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i7-5820K 3.3GHz 6-Core Processor $351.98 @ Newegg
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler $24.89 @ OutletPC
Motherboard MSI X99S Gaming 7 ATX LGA2011-3 Motherboard -
Memory G.Skill Ripjaws 4 series 16GB (4 x 4GB) DDR4-2666 Memory $89.99 @ Newegg
Storage Samsung 850 EVO-Series 250GB 2.5" Solid State Drive $87.99 @ Amazon
Storage Western Digital Red Pro 3TB 3.5" 7200RPM Internal Hard Drive $161.99 @ SuperBiiz
Video Card EVGA GeForce GTX 980 Ti 6GB Superclocked+ ACX 2.0+ Video Card $619.99 @ Amazon
Case NZXT Phantom 630 (Gunmetal) ATX Full Tower Case $150.99 @ SuperBiiz
Power Supply EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply $109.99 @ Newegg
Optical Drive Asus BW-16D1HT Blu-Ray/DVD/CD Writer $61.98 @ Newegg
Operating System Microsoft Windows 7 Professional SP1 OEM (64-bit) $142.88 @ OutletPC
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $1857.67
Mail-in rebates -$55.00
Total $1802.67
Generated by PCPartPicker 2016-03-18 07:44 EDT-0400

I'm guessing this is your build, you REALLY shouldn't be having power issues and if you are or you think its the cause; it's not and something else is wrong.

  • 49 months ago
  • 1 point

I think he's gone SLI

  • 49 months ago
  • 1 point

Then yes that would be the case I misread the post, his wording sounded like he would need a better PSU since he "added" a card.

Then yes you SHOULD be able to upgrade and just reuse cables... As long as its same brand and model

  • 49 months ago
  • 0 points

YES the 850w would use thinner gauge wiring than the 1300w and putting to much through through wires not ever expected to handle that amoint of current

[comment deleted by staff]

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