Reasonably priced 600 watt power supply for a gaming pc?

I'm building a gaming PC and i need a good power supply, and 600 watts should be enough. It would need to support an ati radeon HD 4850 graphics card, a micro atx motherboard, and a Intel Pentium E5200 Wolfdale 2.5GHz LGA 775 65W Dual-Core Processor. I need to buy it off of newegg, and i don't want anything much higher than $50-$70. Any ideas?