The regular PEP66 has a 60x25mm fan and does not fit on most Socket A boards without modifications. They make a version for Socket a that uses a low profile fan (I think a 60x10mm fan) that puts out a lot less air flow and hurt the performance a lot. With the dsame fan though the pep66 will cool slightly better.
The COMPUTER is your FRIEND!
Happiness is manditory.
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