Hi, I managed to unlock the fourth core and now I got a phenom x4 B50. Propus is a core base. Does this mean that there is nothing of L3 cash? I ran LinX, 75 reps and Prime 95 for an hour. There were no errors. Temperature under normal usage is around 33-37 degrees Celsius, and the load (linX) max 63 degrees celsius. Is my stock cooler enuogh for cooling the CPU? What do I get with 4th core unlocked, and will its performance be better than Athlon 450?