There are quite a few overclockers in these forums who have successfully used the Abit NF7-S version 2.0 motherboard to do some ludicrously high and stable overclocks of their cheaply bought and multiplier unlocked Athlon XP.
As they are now quite cheap then there may be some folks out there looking to pick up one of these boards for some overclocking fun, but beware the difference between the highly successful NF7-Sv2 and the new (and worse) NF7-S2.
There is a short article here (http://www.phoronix.com/scan.php?page=article&item=28&num=1) that explains things in more detail, but the bottom line is there are better motherboards out there than the NF7-S2 - it is muliplie rlocked, features few voltage settings and does not have any CAS2 settings.
In fact it is exactly not like the successful overclocker's favourite that it replaced. That's progress for you....... :(
TL.