Power Supply and Video Card Concerns - Corsair CX500W and Sapphire Radeon HD 7870 XT

[thecynicalmonk]

I'm on the brink of finally building this system and I'm getting really concerned about using the Sapphire Radeon HD 7870 XT with a Corsair CX500W Builders Edition PSU. Im worried that the PSU won't be enough for a GPU thats practically a 7950. Please give me some direction and ease my mind.

The Build In Question:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($119.99 @ Microcenter)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard ($84.99 @ Amazon)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($55.99 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($72.04 @ Outlet PC)
Video Card: Sapphire Radeon HD 7870 XT 2GB Video Card ($234.99 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: Corsair Builder 500W 80 PLUS Bronze Certified ATX12V Power Supply ($39.99 @ Newegg)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($89.98 @ Outlet PC)
Monitor: Asus VS228H-P 21.5" Monitor ($132.58 @ Newegg)
Total: $880.54
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-03-12 03:16 EDT-0400)

 

[AMD Radeon]

as long as you dont OC, it is fine

 

[thecynicalmonk]

as long as you dont OC, it is fine

So let's say I did want to OC... Could you suggest an alternative while staying around my budget?

Thanks.

 

[EzioAs]

XFX Pro Series 550W.

A little over your budget maybe but it's a great unit

 

[thecynicalmonk]

Ok, thanks for your help guys!