Sun X5034A | 4GB (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Dual Rank Memory for Fire X4540 Server

1. Memory Type: DDR2 SDRAM
2. Memory Speed: 667 MHz
3. Memory Size: 4 GB
4. Number of Modules: 2
5. Module Size: 2 GB
6. Memory Features: ECC Registered
7. CAS Latency: CL5
8. Pin Count: 240
9. Rank: Dual Rank
10. Error Checking: ECC
11. Form Factor: DIMM
12. Compatibility: Sun Fire X4540 Server

Helpful Notes:
1. This memory is designed for use in servers and workstations, not for consumer PCs.
2. ECC Registered memory is more reliable than non-ECC memory, making it ideal for mission-critical applications.
3. Dual rank memory provides better performance than single rank memory, especially in systems that support dual-channel memory.