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Need a PSU for new build.. recommended wattage?

post #1 of 18
Thread Starter 
Hey everyone, I'm about to build my new rig with these components:

Motherboard: Gigabyte Z68MA-D2H-B3
http://www.newegg.com/Product/Produc...82E16813128495

Processor: Intel Core i5-2500K
http://www.newegg.com/Product/Produc...82E16819115072

RAM: 2x4 GB Patriot PC3 12800 (1600 MHz)
http://www.newegg.com/Product/Produc...82E16820220558

GPU: EVGA GTX 470 [requires 38A on +12V rail]
http://www.newegg.com/Product/Produc...82E16814130549

Drives: OCZ Vertex 2 (60 GB), 500 GB Seagate 7400 RPM, DVD+/-RW Optical Drive

I would like to buy a modular power supply as my case is the NZXT Vulcan which accomodates only microATX boards. What power supply can handle this job? Remember, the +12V rail(s) must power at least 38A for the graphics card alone.


==========
P.S.: How would this power supply fare? http://www.newegg.com/Product/Produc...82E16817341017
Edited by mingqi53 - 10/13/11 at 6:01am
post #2 of 18
OCZ doesn't exactly make one of the better power supplies out there. You are going to want say a Corsair, Seasonic or XFX power supply. They may cost a bit more, but you're paying for that quality too.
post #3 of 18
Stay clear of OCZ, go for a Seasonic, Corsair or Antec.

If you are SLIing 750Watts will be fine.
Edited by andrewmchugh - 10/13/11 at 5:58am
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Intel Core i7 5930K  EVGA x99 Micro EVGA GTX 980 SC ACX 16GB Corsair DDR4 Vengeance LPX Black PC4-21300 
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500GB Samsung 840 EVO H105 Win 10 ASUS ROG PG279 
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Ducky Shine 1 MX-Red Corsair AX 860i  Fractal Design Node 804 Black 
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(11 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 5930K  EVGA x99 Micro EVGA GTX 980 SC ACX 16GB Corsair DDR4 Vengeance LPX Black PC4-21300 
Hard DriveCoolingOSMonitor
500GB Samsung 840 EVO H105 Win 10 ASUS ROG PG279 
KeyboardPowerCase
Ducky Shine 1 MX-Red Corsair AX 860i  Fractal Design Node 804 Black 
CPUGraphicsRAMHard Drive
Core i7 @ 2.6  GT650 16GB of 1600 MHz DDR3L SDRAM 256GB SSD 
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Mac OSX Lion Retina Display US layout 
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post #4 of 18
The psu you linked is fine for that set up. You could do it with a quality 500w if need be.

Also 38 amps is for the whole computer and not just the videocard alone.

Cheers
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
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post #5 of 18
Well

Yes, 600w will be enough, you won't have enough headroom if you decide on SLi 470's though, if you are thinking of a second one then you'll need more

Guys, why are you slating this PSU, it's on the recommended PSU list. There is NOTHING wrong with it.

http://www.overclock.net/power-suppl...-supplies.html

Quote:
Originally Posted by MrTOOSHORT View Post
The psu you linked is fine for that set up. You could do it with a quality 500w if need be.

Also 38 amps is for the whole computer and not just the videocard alone.

Cheers
I wouldn't like to see it on a 500w since the old 400 series pull a lot more power than the 500 series. 600w is about right for a single card.

Comps
post #6 of 18
Thread Starter 
Quote:
Originally Posted by compuman145 View Post
Well

Yes, 600w will be enough, you won't have enough headroom if you decide on SLi 470's though, if you are thinking of a second one then you'll need more
Yeah I don't plan on adding a second graphics card, everything listed above is what will be in the finalized build.

My concern is, I've never owned a PSU with multiple 12V rails (up until now I've only owned single 12V rail Corsairs). Is the amperage additive?

e.g. with the OCZ I linked (http://www.newegg.com/Product/Produc...82E16817341017), this is the power output:
+3.3V@25A, +5V@25A, +12V1@25A, +12V2@25A, -12V@0.3A, +5VSB@2.5A
post #7 of 18
There isn't anything wrong with having a single rail vs multi rails... As long as it's a good quality build there isn't any difference.

I would stick with the OCZ that you picked, there is nothing at all wrong with it and it'll put up with your rig with ease.

Comps
post #8 of 18
Quote:
Originally Posted by compuman145 View Post
Well I wouldn't like to see it on a 500w since the old 400 series pull a lot more power than the 500 series. 600w is about right for a single card.

Comps

My recommendation is from my own experience.

I've ran a 5970 with stock clocks ofcourse off of an Enermax 525w for a few months without issue.

And recently ran two GTX480s off of my Kingwin 550w Platinum with clocks of 750core and 2200 memory without issue either.

I would conclude that a good 500w would easily handle a single GTX470.
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
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CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
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post #9 of 18
I'm not saying it won't handle it, i'm saying it's pushing it and there won't be much headroom. the 600w psu that he's picked is fine.

Also, if you ran SLi 470's on a 550w PSU it'll kill the PSU very quickly, Phaedrus recommends a 750w PSU for SLi 470's...
post #10 of 18
I think newegg still has the seasonic x-650 on sale. I'd have to highly recommend them based on quality and my experience with the company.

The PSU is a part I want to last forever and be transferred to future build. Keep that in mind.
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