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what PSU calculator to trust?

Tags:
  • Processors
  • Support
  • RAM
  • Powersupply
  • Motherboards
  • Asus
Last response: in Motherboards
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May 19, 2014 9:53:41 AM

Hi, ;) 
I have calculated the required supply for my PSU, and these 2 have a huge difference:
Asus calculator = http://support.asus.com/powersupply.aspx
According to this , I need 750 w PSU
And
This one = http://coolermaster.outervision.com
This shows 400w will be enough

My specs :
Processor : AMD Fx-8320
Motherboard: Asus M5A97 r2.0
Ram: G.Skill RipjawsX DDR3 8 GB (1 x 8 GB) PC RAM (F3-12800CL10S-8GBXL)
Graphics:Zotac nVidia 650 ti 2 GB DDR5 (Can go for 750 ti if it really saves power)
HDD:Seagate barracuda 500 GB ST500DM002

Please give me some quick advice I need to build my rig this moth only.
Thanks...

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a b V Motherboard
May 19, 2014 10:21:13 AM

I don't trust any of them since they all seem to vastly overestimate your usage. The one I use is the Watts-Up-Pro ES, but a Kill-a-Watt will do just fine.

Generally for a single video card design these days any great 500 or good 550 will handle the machine with plenty of headroom. Your machine as listed is probably looking at using more like 320 watts from the wall (less being supplied to PC), or somewhere near there.
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May 19, 2014 10:28:36 AM

just take the tdp of cpu and gpu, and vola, got max wattage under load, get at least 30% more watt up to 100% and your fine.
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May 19, 2014 11:18:14 AM

Thanks for replies. I think corsair vs550 will serve me good and corsair is a reputed brand. Any better alternatives at same price or final thoughts/issues with this model?
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a b V Motherboard
May 19, 2014 11:19:06 AM

Corsair is good except for the CX series so you should be good
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