I'm thinking of buying the eVGA 8600GTS, and it recommends a 300W PSU with 18A on 12v minimum , and this is what I have - Newegg.com - Thermaltake TR2 W0070RUC ATX 430W Power Supply 115/230 V - Retail - a thermaltake 430w with 18a @ 12v. I'll have one hard drive, two 120mm case fans, and hopefully an overclocked 3600+ 65nm. So should I get a new PSU or is this all ok?