133 slot

Notes on Intel Pentium III 1BGHz (Socket 370) The processor is usually marked as 1000/256/133/1. magic 77 slot 7V, 1000/256/133/1. magic 77 slot 75V or 1000/256/133/1 76V, where the last number specifies processor's core voltage If the processor is marked with RB80526PZ001256 part number then use processor specification number to identify processor's core voltage