The Intel Celeron 466 is the newest and likely last of the 66 Mhz front side bus Celerons on the market. The Celeron we had for testing was a PPGA unit, made in Malaysia. It carried the numbers L912501Q-0222. Celeron 466s will not be available in a slot 1 design, so if you have a slot 1 motherboard like we did, you'll have to get a Socket 370 to Slot 1 converter like the Slot KET.