I have a core unlocked Athlon x3 450 I unlocked to a Phenom B50. It's stock clock speed is 3.2 ghz @1.42 volts. I have it OC'd to 3.7 @ 1.52 volts. Max temp is about 70C after several hours of prime95 on a Rocketfish aftermarket CPU cooler I got at Best Buy. (It used to hit 70C without an OC on the stock cooler when I ran Prime95.) Is this a good OC?