Pentium 4: 800 FSB, 512 Mb L2 Cache, Hyper threading ( 8 different CPU's)

2.60GHz sSpec SL6WH, SL6WS
2.80GHz sSpec SL6WJ, SL6WT, SL6Z5
3.00GHz sSpec SL6WU, SL6WK, SL7BK

Pentium 4: 533 FSB, 512 Mb L2 Cache, Hyper threading ( 6 different CPU's)

3.06GHz sSpec SL6JJ, SL6SM, SL6K7, SL6QC, SL6S5, SL6PG

Here for your spec sheet
http://docs.google.com/viewer?a=v&q...rTPEUn&sig=AHIEtbTh_JSlSWN3Wt6LCpDAQbGafoE6NQ

To match the Processor to the sSpec code go here (I've already done it for you -see above-but if you want addition details this is the URL
http://processorfinder.intel.com/List.aspx?ParentRadio=All&ProcFam=483&SearchKey=
And narrow your search to: 512Mb L2 Cache, 478 socket, 0.13 micron manufacturing technology, Hyper-threading technology (under Supported Features), and the GHz processor speed stated in the HP spec sheet posted immediately above.