if don't want OC just buy original Stock cooling intel very very enough, don't waste money for pentium4 (old PC), save money for upgrade, it's the best
hendiyah makes sense... but then again i have a 8 year old Celeron pc still running good (for the missus)... so maybe OP wants to prolong its life AMAP... the stock cooler nowadays is available for less than $10... and should be sufficient in no OCing scenario... otherwise go with a $30 hyper 212+ (i know its overkill but OP has a budget upto $50)...