How to figure out Power Supply?

MikeS89

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Jun 26, 2014
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I'm just a little stuck trying to find what PSU to finish a PC build.

I've found a few PSU calculators but they all differ, usually telling me I need between 450 to 750 watts.

Current Specs:

Motherboard: Crosshair V Formula-Z

CPU: AMD FX-8350

GPU: Radeon HD 7850

RAM: 16GB, 2 x 8GB (currently, I plan to add an additional two 8GBs to fill out all four)

Cooler: Cooler Master Nepton 280L

Optical Drive: DVD/CD RW

HDD: 3TB WD Black

Possibly a better sound card down the line.

The case is a CM Storm Trooper, and has two 120mm LED fans and one 140mm fan.

There will also most likely be a good number of usb devices hooked up, if that has any significant impact on power needed.

This PC's intended use is for Render and Animation projects, as well as video editing and game creation.

I'm leaning a bit towards 750W or even up to 850W, mostly to avoid having to get a new PSU if I install something that would require more.

I've posted this here knowing that alot of you guys have much more experience with builds than I do.
I also appreciate any and all help that you're able to share.