Sun X6321A-01 | 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Dual Rank Memory

Here are the technical specifications for the Sun 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Dual Rank Memory:

1. Memory Type: DDR2 SDRAM
2. Memory Size: 4GB Kit (2 x 2GB)
3. Memory Speed: 667MHz
4. Memory Standard: PC2-5300
5. Error Checking: ECC
6. Signal Processing: Registered
7. CAS Latency: CL5
8. Pin Count: 240-pin
9. Voltage: 1.8V
10. Rank: Dual Rank
11. Form Factor: DIMM
12. Compatibility: Sun systems

Helpful notes:
1. This memory kit is designed specifically for Sun systems and is not compatible with other brands.
2. ECC memory is more reliable than non-ECC memory as it can detect and correct certain types of data corruption.
3. Dual rank memory provides better performance than single rank memory as it allows for more data to be accessed at once.