X4540 - Sony 4GB (2x 2GB) DDR2-667

1. Capacity: 4GB (2x 2GB)
2. Memory Type: DDR2 SDRAM
3. Memory Speed: 667 MHz
4. CAS Latency: CL5
5. Pin Count: 240-pin
6. Voltage: 1.8V
7. Error Checking: Non-ECC
8. Buffered/Unbuffered: Unbuffered
9. Dual Channel Kit: Yes
10. Heat Spreader: No
11. Platform Compatibility: PC
12. Memory Configuration: Dual Channel

Helpful notes:
1. DDR2-667 is a relatively slow memory speed compared to modern standards.
2. Dual channel memory can provide a performance boost in certain applications.
3. Non-ECC memory is suitable for consumer-grade systems, but not recommended for mission-critical applications.