Msi r9 280x psu

Hi Tek forum, I am going to be upgrading my PC in the next few weeks. I am going to be getting a R9 280X. Since their are so many aftermarket brands which one should I get for the most performance? MSI, Sapphire, Asus etc? I need a new PSU as well for the new card. I have a AMD FX 4100 oc'd to 4.0GHz, 8Gb DDR3, 1TB HD, Motherboard Gigabyte 78LMT-USB3 and the PSU will need to fit in a CiT Vantage Type-R Gaming Case.

 

Any help is much appreciated.

The XFX 550W bronze is really good for the money. Better than the CX500, and it will give you plenty of headroom. It's an ATX form factor, so it should fit any given ATX chassis. mATX and ATX et cetera.

Thank you for the help :)