77P8691 - IBM 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM Dual Rank Memory Module

1. Memory Type: DDR3 SDRAM
2. Memory Size: 4 GB
3. Memory Speed: 1066 MHz
4. Memory Standard: PC3-8500
5. Error Correction Code (ECC): ECC
6. Registered/Unbuffered: Registered
7. CAS Latency: CL7
8. Pin Count: 240-pin
9. Rank: Dual Rank
10. Voltage: 1.5V
11. Chip Organization: x4
12. Form Factor: DIMM

Notes:
1. ECC memory is designed for systems that require high reliability and error correction capabilities.
2. Registered memory provides better stability and reliability in high-end servers and workstations.
3. Dual rank memory modules offer better performance and higher capacity compared to single rank modules.