Asus Triton 77 CPU Cooler for $49.99 with a $15 rebate. Shipping is free so it comes to $34.99. It is compatible with Intel Core 2 Duo, Intel Core 2 Quad, Pentium Dual Core, AMD Athlon 64 series, AMD Sempron, Intel LGA 775, AMD 754/939/940 and AMD AM2.