Used and in great working order Intel Pentium III Processor at 600MHz (100FSB) or 800Mhz (133FSB) with 256K of cache. The CPU has been thourougly cleaned, tested and performs flawlessly. Comes with aluminum heatsink with copper core and has new thermal paste applied (Arctic MX-4). Fan has also been thourougly cleaned and tested for smooth operation. These processors depending on motherboard bus speed can run from  factory 600MHz (100FSB) up to 800Mhz (133FSB). 

Please note:

• The CPU has been tested and is in good working order.
• The CPU will be re-tested before shipping.
• I don't accept returns or refunds due to the nature and age of vintage electronics goods.
• Item will be packaged with all necessary care.

Feel free to contact me if you have any questions. Thanks for looking!