Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > [Solved] How To Size a PSU?

[Solved] How To Size a PSU?

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - [Solved] How To Size a PSU?

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Best answer from GhislainG.

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Hey folks - newbie here (kinda - have blindly built my last 3 ATX boxes).

How do you accurately size the PSU?

Here's my configuration ...

Case: Antec P180 w/ 3 Antec 120mm fans & 1 Antec cyclone blower for the video card
MB: MSI K9N w/ Athlon 64 X2 5200
Video Card: VisionTek Radeon HD 4650
HD: 3 Western Digital 80Gb, 1 WD 640Gb, 2 Seagate 300Gb - all SATA (the 80Gb are for boot drives for XP, Vista & 7)
DVD-R: 1 Sony
PSU: 450W

I was looking for power requirements for the various pieces. The only specs that I could find are for the WD HDs. Estimating a peak of 44W at idle.

Thanks for your "push in the right direction".

Cheers,

SeamusG

Message edited by SeamusG on 10-25-2009 at 05:25:15 PM

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There are several PSU calculators, e.g., http://www.antec.outervision.com/

Best answer

There are several PSU calculators, e.g., http://www.antec.outervision.com/

Reply to GhislainG

GhislainG - you make this sooooo easy. Thx.

Reply to SeamusG

Actually PSU manufacturers make it easy.

Reply to GhislainG

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[Solved] How To Size a PSU?

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - [Solved] How To Size a PSU?