Memory Sockets
This page compares memory sockets for various DIMMs and may help you select the best memory form factor for your application.
| Technology | DIMM type (s) | Pin Count | Pitch (mm) | pin footprint on PCB (Length x width, mm) | Typical contactor Size (mm) | Voltage (V) | JEDEC Spec |
| DDR1 | RDIMM, UDIMM | 184 | 1.27 | 152x25 | 2.5 | MO-206 | |
| DDR1 | SO-DIMM | 200 | 0.6 | 90x25 | 2.5 | MO-224 | |
| DDR1/DDR2 | Micro-DIMM | 214 | 0.4 | 45.9 x 3.95 | 1.8 | ||
| DDR1/DDR2 | Mini-DIMM, Mini-RDIMM | 200 | 0.6 | 83.8 x 9.00 | 1.8 | ||
| DDR2 | FBDIMM | 240 | 1 | 142 x 7.75 | 152x14 | 1.8 | MO-256 |
| DDR2 | Mini-DIMM, Mini-RDIMM | 244 | 0.6 | 97 x 9 | |||
| DDR2 | RDIMM, UDIMM | 240 | 1 | 142 x 7.75 | 152x14 | 1.8 | MO-237 |
| DDR2 | SO-DIMM, SO-RDIMM, SO-CDIMM | 200 | 0.6 | 90x25 | 1.8 | MO-224 | |
| DDR3 | RDIMM, UDIMM | 240 | 1 | 142 x 7.75 | 152x14 | 1.5 | MO-269 |
| DDR3 | SO-DIMM, SO-RDIMM, SO-CDIMM | 204 | 0.6 | 72 x 8.2 | 90x14 | 1.5 | MO-268 |
RAMpedia is a DRAM memory encyclopedia and reference tool
to help computer hardware board designers with DRAM memory subsystems.
This information is provided as a courtesy by Virtium Technology.
www.virtium.com
