
DIMM 1
DIMM 2
DIMM 3
DIMM 4
DIMM 5
DIMM 6
DIMM 7
DIMM 8
vIn a 
Table 6. Low-cost  and low-power  DIMM installation sequence
| DIMM pair | Installed | ||
| installation order | connector number | numbers | microprocessors | 
| 
 | 
 | 
 | 
 | 
| First | 1 | 1 and 8 | 1 and 4 | 
| 
 | 
 | 
 | 
 | 
| Second | 7 | 1 and 8 | 
 | 
| 
 | 
 | 
 | 
 | 
| Third | 1 | 3 and 6 | 
 | 
| 
 | 
 | 
 | 
 | 
| Fourth | 7 | 3 and 6 | 
 | 
| 
 | 
 | 
 | 
 | 
| Fifth | 1 | 2 and 7 | 
 | 
| 
 | 
 | 
 | 
 | 
| Sixth | 7 | 2 and 7 | 
 | 
| 
 | 
 | 
 | 
 | 
| Seventh | 1 | 4 and 5 | 
 | 
| 
 | 
 | 
 | 
 | 
| Eighth | 7 | 4 and 5 | 
 | 
| 
 | 
 | 
 | 
 | 
If you plan to install additional memory cards in the 
Table 7. 
| 
 | 
 | |
| Memory card pairs | number | Installed microprocessors | 
| 
 | 
 | 
 | 
| First | 1 and 7 | 1 and 4 | 
| 
 | 
 | 
 | 
| Second | 2 and 8 | 
 | 
| 
 | 
 | 
 | 
| Third | 3 and 5 | 2 and 3 | 
| 
 | 
 | 
 | 
| Fourth | 4 and 6 | 
 | 
| 
 | 
 | 
 | 
In a 
66IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Installation and User's Guide
