DDR1 (DDR SDRAM) uses a 184-pin DIMM slot operating at 2.5V with speeds from DDR-200 to DDR-400. Used in PCs from 2000 to 2004 before DDR2 replaced it.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VSS | Ground | GND |
| 2 | DQ0 | Data bit 0 | I/O |
| 184 | VSS | Ground | GND |
DDR1 (DDR SDRAM) uses a 184-pin DIMM slot operating at 2.5V with speeds from DDR-200 to DDR-400. Used in PCs from 2000 to 2004 before DDR2 replaced it.