Newegg offers the Cooler Master Hyper 212 Plus CPU Cooler, model no. RR-B10-212P-G1, for $29.99. This $10 mail-in rebate cuts it to $19.99. With free shipping, that's the lowest total price we could find by $17, although it was $3 less last fall. It fits Intel 1366, 1156, and 775 sockets, plus AMD Socket AM3, AM2+, and AM2. Rebate expires March 30.