371-4322-01 - Sun 4GB DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Dual Rank Memory Module for Sun Fire X4140 X4240 X4100 M2

1. Memory Type: DDR2 SDRAM
2. Memory Size: 4GB
3. Memory Speed: 667 MHz
4. Memory Standard: PC2-5300
5. Error Correction Code (ECC): ECC
6. Registered/Unbuffered: Registered
7. CAS Latency Timing: CL5
8. Pin Count: 240-pin
9. Rank: Dual Rank
10. Voltage: 1.8V
11. Compatible With: Sun Fire X4140, X4240, X4100 M2
12. Form Factor: DIMM

Helpful Notes:
1. This memory module is designed for use in Sun Fire servers and may not be compatible with other systems.
2. ECC memory is more reliable than non-ECC memory as it can detect and correct single-bit errors.
3. Dual rank memory modules offer better performance than single rank modules as they allow for more data to be accessed simultaneously.