Intel Celeron processor families

Second generation of socket 370-compatible Celeron processors was based on Coppermine core. Like the Mendocino core, the Coppermine core had level 2 cache integrated on the die. The size of level 2 cache didn't change from older PPGA Celerons - it was 128 KB, or half the size of L2 cache of Pentium III Coppermine processors. The cache itself was improved - it featured 256-bit wide path to the cache and had lower latency than the cache of PPGA processors. Another enhancement in Coppermine Celerons was addition of SSE instructions, which could significantly boost processor performance in SSE-enabled applications. Core voltage of the Coppermine processors was reduced from 2.0 Volt to 1.5 - 1.75 Volt, which resulted in lower power consumption and cooler running processors. New package type of these Celerons, with processor die exposed on the top of the chip, also allowed better processor cooling. Coppermine Celeron microprocessors required revised socket 370 - this socket was mechanically, but not electrically compatible with PPGA Socket 370, which made all Copermine CPUs incompatible with many old Socket 370 motherboards.

The last generation of socket 370 Celeron processors featured Tualatin core with 256 KB level 2 cache, often called as Tualatin-256. Having twice as much cache as Coppermine Celerons, these microprocessors performed as fast as Pentium III Copermine processors running at the same Front Side Bus frequency (100 MHz). Besides larger level 2 cache, the Celerons also had lower core voltage and power consumption. The package of these processors was modified. It still used Flip-Chip packaging technology, where the processor die was mounted upside down on the top of the plastic package, but on Tualatin Celerons the die was covered by integrated heatsink. Like the Pentium III Tualatin CPUs, the Celerons used new bus interface, and, though the Celerons could fit into older socket 370 motherboards, the processors couldn't work in them. It was still possible to use special Tualatin socket 370 adapters to run Tualatin Celeron processors in old motherboards.