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How Many watts should my power supply be?

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  • Power Supplies
  • Quad Core
  • Intel i7
  • Power
  • Computers
  • Build
  • Components
Last response: in Components
April 5, 2014 9:17:09 AM

I wanted to know, how much power I would need to run this Computer build:
Intel I7 4770K 3.5 GHz quad core processor
ASRock Z87 Extreme 4 motherboard
Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory
Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive
EVGA GeForce GTX 780 Ti 3GB Video Card
Asus VG278HE 144Hz 27.0" Monitor
So what would be the best power supply value wise, and how many watts should it be capable of?

More about : watts power supply

a b ) Power supply
April 5, 2014 9:20:48 AM

NateBO said:
I wanted to know, how much power I would need to run this Computer build:
Intel I7 4770K 3.5 GHz quad core processor
ASRock Z87 Extreme 4 motherboard
Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory
Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive
EVGA GeForce GTX 780 Ti 3GB Video Card
Asus VG278HE 144Hz 27.0" Monitor
So what would be the best power supply value wise, and how many watts should it be capable of?


Look for a Modular 750w in your price range, from Corsair, PCPower & Cooling, Seasonic, or XFX ( there is another one that I can't think of at the moment ). That is probably somewhere north of Headroom and in the Overkill place, but it is fine. :) 
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a b ) Power supply
April 5, 2014 9:26:45 AM

A high quality 650 will do you just fine. go corsair, xfx, or seasonic
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April 5, 2014 9:30:44 AM

with that CPU you need a haswell compliant PS, so check that box first.
I'm a big fan of more wattage is better -within limits - I'd default to 750. They have head room for later additions and I believe will run cooler than lower wattage units because they won't be working so hard.

Also if you are planning on a new case fine but if not you will be having issues if the PS you get wants to mount in the bottom of the case ( where they go these days). I got a Corsair hx750 in the top of my older case but it took some drilling for the differently placed holes and I had to account for the fact that the things vent by sucking air in from the top and blowing it out the bottom
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a c 278 ) Power supply
April 5, 2014 9:50:16 AM

Requirements wise with some headroom, is 600 with 42 AMPs on the 12 volt, I often use the M12II 620 SeaSonic
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April 5, 2014 9:50:25 AM

I was thinking of this Psu, EVGA SuperNOVA 650W 80+ Gold Certified Fully-Modular ATX Power Supply. would this be a good option?
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a c 278 ) Power supply
April 5, 2014 9:51:25 AM

Yes the EVGA would be a good choice also
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April 5, 2014 10:11:36 AM

I think I'l go with the XFX 650W PSU, it fits in my budget well. And I am going to be using a NZXT Phantom White case, will this case be fine?
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a c 5953 ) Power supply
April 5, 2014 10:14:58 AM

Yes it's will!
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