| Manufacturer Part Number | 49Y1561 |
| Manufacturer Part Option | 47J0168, EBJ40RF4BDWA-GN-F |
| Brand | IBM |
| Type | DDR3 SDRAM |
| Capacity | 4 GB |
| Form Factor | RDIMM |
| Memory Features | Registered |
| Bus Speed | PC3-12800 |
| Memory Speed | 1600 MHz |
| Number of Pins | 240 pin |
| Latency | CL11 |
| Voltage | 1.5 V |