Pentium 4. Silent PC Review is also a good source of info on underclocking. Finally, as to our choice of a Pentium M vs. an Opteron 150 or 165 for the processor - neither Opteron was available while we were preparing this article. We are in touch with AMD...

Intel Celeron D, Pentium 4, Pentium D, Core 2 Duo, Core 2 Quad), AM2 (AMD Sempron, Athlon 64, Athlon 64 X2, Athlon 64 FX), 754 (AMD Sempron, Athlon 64), 939 (AMD Athlon 64, Athlon 64 X2, Athlon 64 FX, Opteron, Dual Core Opteron), and more. This makes one of...

D, Core 2 Duo, Core 2 Quad), AM2 (AMD Sempron, Athlon 64, Athlon 64 X2, Athlon 64 FX), 754 (AMD Sempron, Athlon 64), 939 (AMD Athlon 64, Athlon 64 X2, Athlon 64 FX, Opteron, Dual Core Opteron), and more. This makes one of these puppies a pretty safe bet as...