How do i know wich PSU fits in my system?

GwnPlayz

Commendable
Jun 22, 2016
10
0
1,510
Dear reader,

I bought a Sapphire r9 280x Dual-X 3GB OC.
Im am going to buy a 550+ watt power supply, but i don't know if he fits in my system.
(i mean with cables) Here is my system:
-AMD ATHLON II x4 651
-Sapphire r9 280x DUAL-X 3GB Oc
-ASRock A75M-HVS
-Western Digital wd5000AAKS (500GB)
-TSSTcorp CDDVDW SH-224FB ATA Device

Please help me :??: