HP 4GB DDR3 1600MHz ECC Unbuffered Dual Rank x8

This high-quality DDR3 memory module from the renowned manufacturer HP is designed for powerful HP systems, servers, and multiprocessor PCs. The 4 GB module supports ECC Unbuffered with parity control. ECC technology performs real-time integrity checks of the data stored in memory, which allows it to find and fix single-bit errors and detect errors of two bits per 64-bit word.
This memory module has two separately addressable areas (memory rank). Most server chipsets have a limited memory rank or prescribed memory configuration for individual slots, so you need to keep this detail in mind when considering future upgrades—if you have a full memory rank on your motherboard, you will not be able to add another module even if you have some free memory slots left.
Parameters and specifications:
Type:

DDR3 ECC Unbuffered
Capacity:
4 GB
Memory rank:
Dual Rank
Clock speed:
1600 MHz
CAS latency (CL):
11