My PSU is bad. Need help with upgrading to a new one.

I now have an unbranded 500W PSU, which is sometimes making loud grinding noises on cold startup. The fan completely stops when this happens.The noise never goes away until i tap the back of my PSU.
Ive been advised to go for a branded, Corsair CX500 80+ PSU. I am also intending to upgrade my GPU to GTX 550ti. Would the Corsair CX500 80+ PSU be able to supply all the power needed?


**GPU**: AMD Radeon HD 6670 1GB
**CPU**: AMD FX 4170 Quad Core 4.2GHz
**Hard Drive**: SATA Western Digital, 32mb Cache, 1.5TB
**MotherBoard**: M5A78L-M-LX-V2, AM3+, DDR3
**LED Fan** 80mm
I am in the UK.
This is the power supply I am intending to get.
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  1. Best answer
    Yes the Corsair CX500 is a good budget PSU and is enough for a GTX-550-Ti.

    CX500 puts out 38amps single rail and GTX550ti needs 24amps.
  2. corsair CX is basic power supply better then generic "no-name" units but nothing extra ,
    however it will reliably supply your system with needed power ...

    gtx550Ti is outdated really...
    go for new nvidia gtx650Ti boost edition 2gb...
  3. Made by the best SEASONIC.

    PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: XFX 450W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£34.99 @ Maplin Electronics)
    Total: £34.99
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-11-10 13:33 GMT+0000)
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