The single core CPU that I can think of are: AMD Athlon AMD Athlon 64 AMD Athlon X2 AMD Athlon XP AMD Duron AMD Geode AMD Opteron AMD Sempron AMD Turion 64 Intel Celeron Intel Celeron D Intel Celeron M Intel Core Solo Intel Itanium Intel Pentium Intel Pentium 4 Intel Pentium 4 Extreme Ed. Intel Pentium 4 HT Intel Pentium D Intel Pentium III E Intel Pentium M, Centrino Intel Pentium MMX Intel Xeon Intel Xeon MP

Why are you asking about single core CPUs in this day & age? And why did you include such old CPUs such as the Pentium MMX that maxed out at just 233MHz? Also, several of the CPUs you listed are dual core - Athlon X2 & Pentium D, for example? I think you need to clarify what you're asking & why...you also need to do some research.

the list of CPUs I copied from eBay, trying to stick with the single cores.I'll try to edit out: Athlon X2 Intel Pentium D Intel Pentium 4 Extreme Ed Intel Core Solo. I'm trying to make a PC cluster where each node take advantage of only one multicore CPU, therefore the rest per node will be single core

"Intel Core Solo" The word, "Solo" should be a clue...it's a single core CPU.

Intel Core Solo: "Intel Core Solo (product code 80538) uses the same two-core die as the Core Duo, but features only one active core." http://en.wikipedia.org/wiki/Intel_...

It's still a single core processor Luis. You want a list of TI, Geode, Cyrix, NextGen, Cypress and other single core stuff? Hughes, RCA, Poland, Bipolar Integrated Technology? Everybody used to make processors. Skip

Might as well say Intel Core i7. Playing to the angels Les Paul (1915-2009)