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RIMM Installation Guidelines
You must install RIMMs in pairs. This means that the RIMM in each socket on one MEC must be the same memory capacity, density, and speed as the corresponding RIMM in the same socket on the other MEC. Also, for either channel A or B of each MEC, if one socket contains a RIMM, then the other socket must contain either another RIMM or a continuity RIMM (CRIMM).
As an example, if you install only one pair of RIMMs in the RIMM1_A socket of each MEC, then you must install a CRIMM in socket RIMM2_A of each MEC. Channel B (sockets RIMM3_B and RIMM4_B) may remain empty, or it may contain one or two CRIMMs per MEC (see Figure 1).
However, if channel A contains two RIMMs and you want to install additional RIMMs, the preceding rules also apply for channel B.
NOTES: If
When you add
Dell does not recommend or support the mixing of old and new
Table 1. Sample Factory-Installed RIMM Configurations (per MEC)
For Total
Desired
Memory:
Populate both MECs as follows:
|
|
| RIMM4_B |
RIMM1_A (top) | RIMM2_A | RIMM3_B | (bottom) |
128 MB | CRIMM | 64 MB | Empty | Empty |
256 MB | CRIMM | 128 MB | Empty | Empty |
384 MB | 128 MB | 64 MB | CRIMM | Empty |
512 MB | 128 MB | 128 MB | CRIMM | Empty |
512 MB | CRIMM | 256 MB | Empty | Empty |
768 MB | 256 MB | 128 MB | CRIMM | Empty |
1024 MB | 128 MB | 128 MB | 128 MB | 128 MB |
1024 MB | 256 MB | 256 MB | CRIMM | Empty |
1536 MB | 256 MB | 256 MB | 256 MB | CRIMM |
2048 MB | 256 MB | 256 MB | 256 MB | 256 MB |
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support.dell.com | System Memory Upgrade | 5 |