Table 6. Memory options
| Part | 
 | Feature | Description | Maximum | Models | 
| number | 
 | code | 
 | quantity | where used | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| UDIMM | 
 | 
 | 
 | 
 | |
| 
 | 
 | 
 | 
 | 
 | |
| 44T1569 | 
 | 1914 | 2GB (1x2GB, Dual Rankx8)  | 12 | 
 | 
| 
 | 
 | 
 | CL9 ECC  | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1403 | 
 | A0QS | 2GB (1x2GB, 1Rx8, 1.35V)  | 12 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP UDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1404 | 
 | 8648 | 4GB (1x4GB, 2Rx8, 1.35V)  | 12 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP UDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | |
| 1.35V RDIMM | 
 | 
 | 
 | ||
| 
 | 
 | 
 | 
 | 
 | |
| 49Y1405 | 
 | 8940 | 2GB (1x2GB, 1Rx8, 1.35V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1392 | 
 | 3893 | 2GB (1x2GB, 2Rx8, 1.35V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1394 | 
 | 3894 | 4GB (1x4GB, 2Rx4, 1.35V)  | 18 | C2x, H2x | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1406 | 
 | 8941 | 4GB (1x4GB, 1Rx4, 1.35V)  | 18 | Other models | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1407 | 
 | 8942 | 4GB (1x4GB, 2Rx8, 1.35V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1397 | 
 | 8923 | 8GB (1x8GB, 2Rx4, 1.35V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1398 | 
 | 8921 | 8GB (1x8GB, 2Rx4, 1.35V)  | 18 | 
 | 
| 
 | 
 | 
 | CL7 ECC DDR3 1066MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1563 | 
 | A1QT | 16GB (1x16GB, 2Rx4, 1.35V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1400 | 
 | 8939 | 16GB (1x16GB, 4Rx4, 1.35V)  | 12 | 
 | 
| 
 | 
 | 
 | CL7 ECC DDR3 1066MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 1.5V RDIMM | 
 | 
 | 
 | 
 | |
| 
 | 
 | 
 | 
 | 
 | |
| 44T1592 | 
 | 1712 | 2GB (1x2GB, 1Rx8, 1.5V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1433 | 
 | 8934 | 2GB (1x2GB, 2Rx8, 1.5V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1434 | 
 | 8935 | 2GB (1x2GB, 1Rx4, 1.5V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 44T1599 | 
 | 1713 | 4GB (1x4GB, Dual Rankx8)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC  | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1435 | 
 | 8936 | 4GB (1x4GB, 2Rx4, 1.5V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 49Y1436 | 
 | 8937 | 8GB (1x8GB, 2Rx4, 1.5V)  | 18 | 
 | 
| 
 | 
 | 
 | CL9 ECC DDR3 1333MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| 46C7483 | 
 | 1707 | 16GB (1x16GB, Quad Rankx4)  | 12 | 
 | 
| 
 | 
 | 
 | CL7 ECC DDR3 1066MHz LP RDIMM | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
| IBM System x3650 M3 | 15 |