This was the last Intel desktop socket to use a pin grid array (PGA) interface.

All later Intel desktop sockets use a land grid array (LGA) interface.

Socket 478 also supported the newer Prescott-based Celeron D processors (which were also one of the last CPUs made for the socket), and early Pentium 4 Extreme Edition processors with 2 MB of L3 CPU cache.

All sockets (Pentium 4 and Celeron) have the following mechanical maximum load limits which should not be exceeded during heatsink assembly, shipping conditions, or standard use.

Load above those limits may crack the processor die and make it unusable.