coolermaster hyper 212+ is the standard recommendation that can reach 4.5ghz and its only around $30.
then you move up to high prices cooler thats just slightly better.
Is 212+ really that
good that people all around the Internet keep recommending it even for overclocks as high as 4.5 GHz? How does 212+ compare to, for example, Corsair A70 or Zalman CNPS10X Quiet or Scythe Mugen 2 Rev. B? They're all pretty affordable if you ask me.