What PSU would you recommend for this build?

I'm probably going to overclock my CPU and i'm not completely sure that the PSU I have would be sufficient enough. If the one I currently have is not good enough can you guys suggest one that would be for under 50$?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD Phenom II X4 965 Black 3.4GHz Quad-Core Processor ($89.99 @ NCIX US)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($25.99 @ Newegg)
Motherboard: ASRock 970 Extreme3 ATX AM3+ Motherboard ($69.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($39.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($67.99 @ NCIX US)
Video Card: MSI Radeon HD 7770 GHz Edition 1GB Video Card ($86.97 @ Newegg)
Case: Zalman Z9 Plus ATX Mid Tower Case ($49.99 @ NCIX US)
Power Supply: Corsair Builder 430W 80 PLUS Certified ATX12V Power Supply ($24.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($15.98 @ Outlet PC)
Total: $526.88
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-11-27 08:51 EST-0500)