I have a three very rare S478 P4 HyperThreading 3.06ghz/533mhz/512kb CPUs out of retired office PCs (never overclocked). SSpec is SL6S5/Costa Rica. All 3 were made the same week and the last 4 digits of the serial numbers are 0327, 0328, and 0330.
IntelĀ® PentiumĀ® 4 Processors 3.06 GHz - SL6S5
I would like to swap one for 2x1gb DDR1 dual-channel set.