Socket 603 / 604 CPU Coolers for Intel Xeon / Nocona  
  
Note(s):
  • Pictures may not reflect actual items.
  • Specifications may change without notice, subject to manufacturers.
  • Socket 604 is similar to Socket 603.
    • Socket 604 has 603 electrical contacts (pins), and an additional dummy pin, for a total of 604 pins.

    • Socket 603 processors could be used with a Socket 604 motherboard, but the Socket 604 processor could not be used with a Socket 603 motherboard due to having one additional pin.