Originally Posted by
Diesta
You want more than a 550W PSU. Why would you save on the most crucial piece of equipment in your rig? If you're gonna do any overclocking, it's gonna cut sharp on whether it'll be able to keep everything up and running.
Code:
System Type: 1 physical CPU
Motherboard: Regular - Desktop
CPU Socket: Socket LGA 1155
CPU: Intel Core i5-2500K 3300 MHz Sandy Bridge
Overclocked: 4300 MHz, 1.38 V
CPU Utilization (TDP): 90% TDP
RAM: 2 Sticks DDR3 SDRAM
Video Card 1: AMD Radeon HD 7970
Regular SATA: 1 HDD
DRAM SSD: 1 Drive
DVD-RW/DVD+RW Drive: 1 Drive
USB: 1 Device
Fan Controller: Yes
Fans
Regular: 3 Fans 120mm;
Keyboard and mouse: Yes
System Load: 90 %
Minimum PSU Wattage: 389 Watts
Recommended Wattage: 439 Watts
The numbers are not exact of course but it gets you close enough.
Corsair TX550M delivers around 45A, the PSU will be perfectly fine. The 7970 is a little overkill for OP's needs and a 7870/7950 would use even less power.