PC100

For the Japanese home computer, see NEC PC-100.

DIMM module: 168 pins and two notches.

PC100 is a standard for internal removable computer random access memory, defined by the JEDEC. PC100 refers to Synchronous DRAM operating at a clock frequency of 100 MHz, on a 64-bit-wide bus, at a voltage of 3.3 V. PC100 is available in 168-pin DIMM and 144-pin SO-DIMM form factors. PC100 is backward compatible with PC66 and was superseded by the PC133 standard.

A module built out of 100 MHz SDRAM chips is not necessarily capable of operating at 100 MHz. The PC100 standard specifies the capabilities of the memory module as a whole. PC100 is used in many older computers; PCs around the early 2000s were the most common computers with PC100 memory.

See also

• PC66
• PC133
• PC1600
• PC2100
• PC2700
• PC3200

• DRAM
• SDRAM
• DDR SDRAM
• DIMM
• SO-DIMM