HP 128GB DDR4-2400 ECC Load Reduced DIMM — 809208-B21

The HP 809208-B21 is a 128GB DDR4-2400 (PC4-19200) ECC Load Reduced DIMM in an octal-rank 8Rx4 configuration for HPE ProLiant Gen9 servers. Operating at 1.2V with CL20 latency across 288 pins, it delivers the highest DDR4-2400 per-slot density for memory-intensive Gen9 deployments, leveraging the LRDIMM load-reduced buffer to support 8 ranks per slot.

Key Features

• 128GB octal-rank LRDIMM — maximum per-slot memory density for HPE ProLiant Gen9
• DDR4-2400 (PC4-19200) with load-reduced buffer enabling 8Rx4 rank configuration
• ECC protection with LRDIMM architecture for enterprise reliability at extreme capacity
• 1.2V energy-efficient operation for high-density Gen9 memory deployments

Product Specifications

• Part Number: 809208-B21
• Manufacturer: HP
• Capacity: 128GB
• Type: DDR4 ECC Load Reduced (LRDIMM)
• Speed: 2400MHz (PC4-19200)
• CAS Latency: CL20
• Voltage: 1.2V
• Ranks x Width: 8Rx4
• Pins: 288-pin

Memory Specifications

• Memory Standard: JEDEC DDR4-2400
• Error Correction: ECC (Error Correcting Code)
• Buffer Type: Load Reduced (LRDIMM)
• DRAM Generation: DDR4

Performance Specifications

• Peak Bandwidth: ~38.4 GB/s (PC4-19200)
• ECC Type: Single-bit error correction, multi-bit error detection
• RAS Features: Advanced ECC, memory mirroring, rank sparing (platform dependent)

Use Cases

• HPE ProLiant Gen9 maximum-capacity memory configurations using 128GB per slot
• In-memory database and analytics platforms (SAP HANA, Oracle IMDB) on Gen9
• Large-scale VMware ESXi and Hyper-V virtualization with maximum VM density
• HPC workloads requiring the highest possible DDR4-2400 memory capacity per server

Compatibility

• HPE ProLiant DL380 Gen9, DL560 Gen9, DL580 Gen9
• HPE ProLiant BL460c Gen9 and other LRDIMM-capable Gen9 platforms
• Intel Xeon E5-2600 v3/v4 (Haswell-EP / Broadwell-EP) supporting DDR4-2400 LRDIMM

Frequently Asked Questions

What is an octal-rank (8Rx4) LRDIMM and why does it require a load-reduced buffer?

An 8Rx4 LRDIMM contains 8 ranks of DRAM accessible via a 4-bit wide bus per rank. Without a load-reducing buffer, 8 ranks would overwhelm the memory controller's drive strength. The LRDIMM buffer aggregates all ranks behind a single electrical load, enabling the memory controller to manage it as if it were a lower-rank module.

Is 809208-B21 compatible with HPE ProLiant Gen10?

Gen10 servers support DDR4-2666 and DDR4-2933. A DDR4-2400 LRDIMM may operate at a lower speed in Gen10 platforms — consult HPE Gen10 QuickSpecs to confirm compatibility and expected operating frequency.

Can 809208-B21 be mixed with 64GB LRDIMMs in the same server?

Mixing modules of different capacities in the same memory channel is not recommended and may result in speed downgrades. Consult HPE ProLiant Gen9 QuickSpecs for validated mixed-capacity configurations.

The HP 809208-B21 128GB DDR4-2400 LRDIMM delivers maximum per-slot memory density for HPE ProLiant Gen9 platforms. Order today — in stock at the best price with fast shipping.