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System PSU requirements

Building an htpc the specs are as follows:
AMD A6-6400k
Gigabyte F2A88XM-DS2
MSI HD7850 1GB OC (R7850-1GD5/OC)
WD Caviar Blue 1tb HDD 7,200rpm
LG GH22 from an old build
SG02B-F USB 3.0 case

A few PSU calculators say about 290w so I was thinking 450/500w PSU
I would prefer quiet since its an HTPC and modular is also preferable but can be worked around.
APU fan will be replaced with an aftermarket cooler soon when I have the money. My budget for PSU is £40, £45 at a push unfortunately.
Input is always appreciated.
4 answers Last reply Best Answer
More about system psu requirements
  1. A good quality 400W will probably do you fine, but to be safe, in case you want to upgrade to a more powerful GPU or CPU in the future, get a quality 500W.
  2. Radeon HD 7850 requires 21A and a 500W psu minimum.
  3. Best answer
  4. Due to budget constraints I think I will go for the second one.
    Thank you very much.
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