627808-B21 HPE 16GB PC3-10600 DDR3 Memory.

HPE 627808-B21 16GB DDR3 Server Memory

The HPE 627808-B21 represents a high-performance server memory solution engineered specifically for Hewlett Packard Enterprise ProLiant servers. This 16GB memory module operates at 1333MHz with PC3-10600 data transfer rates, delivering exceptional bandwidth for memory-intensive applications. The module features CAS Latency 9 (CL9) timing, which determines the delay between when a memory controller sends a read command and when the data becomes available. This optimized timing ensures efficient data access patterns and reduced wait states for improved system responsiveness.

Capacity: 16GB

Memory Architecture and Design

Built using Low Power (LP) ECC Registered DDR3 SDRAM technology, this memory module incorporates advanced error correction capabilities that automatically detect and correct single-bit memory errors while detecting double-bit errors. The registered design includes buffer chips that reduce electrical load on the memory controller, enabling higher memory densities and improved signal integrity across the memory subsystem. The 240-pin DIMM form factor follows JEDEC standardization while maintaining compatibility with HPE server infrastructure.

Memory Population Guidelines

For optimal performance in ProLiant G7 servers, memory should be installed in matched pairs or sets according to HPE's population guidelines. The memory controllers in these platforms support advanced memory interleaving when modules are properly configured, significantly increasing effective memory bandwidth. Maximum memory capacity varies by server model, with the DL380p G7 supporting up to 384GB across 24 DIMM slots when fully populated with 16GB modules. Proper installation sequence beginning with specific slots ensures optimal memory channel utilization and performance.

Firmware

This memory module includes integrated Serial Presence Detect (SPD) circuitry that automatically communicates timing parameters to the system BIOS during boot sequence. The HPE Intelligent Provisioning and Integrated Lights-Out (iLO) management systems recognize these modules and can report detailed memory health statistics, including temperature readings, error correction events, and predictive failure analysis. This integration enables proactive maintenance and reduces system downtime through early warning of potential memory issues.

Theoretical Bandwidth Calculations

With a base clock speed of 1333MHz and 64-bit data bus, the PC3-10600 designation indicates a peak transfer rate of 10,600 MB/s per module. In dual-channel configurations commonly employed in ProLiant servers, this bandwidth effectively doubles to 21,200 MB/s, while triple-channel configurations can achieve up to 31,800 MB/s aggregate bandwidth. These theoretical maximums represent ideal conditions, with real-world performance typically achieving 85-90% of these values depending on workload characteristics and system configuration.

Application Performance Impact

Database servers, virtualization hosts, and computational analysis applications demonstrate particular sensitivity to memory bandwidth and latency characteristics. In standardized benchmarks using SQL Server and VMware ESXi, systems equipped with 627808-B21 memory modules showed 12-18% performance improvements over previous-generation PC3-8500 memory in memory-bound operations. The combination of ECC protection and registered design ensures data integrity without compromising access times, making this memory ideal for financial, healthcare, and scientific computing applications where data accuracy is paramount.

Reliability, Availability, and Serviceability

The ECC implementation in these modules utilizes single-error correction, double-error detection (SECDED) algorithms that can correct single-bit errors transparently to the operating system while logging corrected errors for administrative review. When uncorrectable errors are detected, the system can employ memory page retirement through hot-spare memory capabilities available in ProLiant servers, automatically mapping out faulty memory regions while maintaining system operation. This comprehensive approach to memory reliability exceeds JEDEC standards for server-class memory.

Generational Comparison DDR3 vs. DDR4

While DDR4 memory offers higher frequencies and reduced power consumption, DDR3 remains a cost-effective solution for existing infrastructure. The 627808-B21 provides an optimal balance of performance, power efficiency, and reliability for organizations extending the lifecycle of ProLiant G7 servers. The 1.35V operating voltage narrows the power efficiency gap with DDR4 while maintaining compatibility with existing server infrastructure. For many workloads, the performance differential between DDR3-1333 and entry-level DDR4-2133 is less than 15%, making these modules a sensible choice for budget-conscious upgrades.

Speed: 1333MHz

The HPE 627808-B21 DDR3 SDRAM DIMM Memory Kit boasts a speed of 1333MHz. This high-speed performance ensures that data is transferred quickly and efficiently, resulting in snappy application responses and reduced loading times.

ECC Registered

The HPE 627808-B21 DDR3 SDRAM DIMM Memory Kit supports Error-Correcting Code (ECC) technology and is ECC Registered. ECC ensures data integrity and detects and corrects errors that may occur during memory operations.

Compatibility

The 627808-B21 memory module is specifically validated for HPE ProLiant G7 server series, including but not limited to DL380p G7, DL360p G7, DL380e G7, and BL460c G7 platforms. Each module undergoes rigorous compatibility testing within HPE's qualification laboratories to ensure flawless operation across the entire server ecosystem. The memory integrates seamlessly with Intel Xeon E5-2600 and E5-2400 processor families commonly found in G7 series servers, optimizing memory bandwidth to match processor capabilities.