Intel Celeron 333

The Celeron 333 sold in both slot 1 and socket 370 variants. Back in the day of the Pentium II, slot 1 was used for Intels' latest processors. using slot 1 Intel could move the L2-cache right next to the processor rather than on the motherboard. This is called off-die L2-cache and was faster than L2-cache on the motherboard.

Later Intel combined the L2-cache with the processor itself. Rather than sticking it next to the processor; it was integrated in the processor 'die'. This is called on-die L2-cache and is noticeably faster than off-die L2-cache. However, don't me mistunderstood; the Celeron 333 on slot 1 and socket 370 both have on-die L2-cache. Intel just placed the socket 370 Celeron on a slot 1 package so that it would be backwards compatible with older slot 1 motherboards.