HP 64GB 2666MHz DDR4 PC4-21300 ECC Registered CL22 288-Pin Load Reduced DIMM 1.2V Quad Rank x4 Memory Module – 850882-001

HP 850882-001 64GB DDR4-2666 ECC LRDIMM — 4Rx4 CL22 Server Memory

The HP 850882-001 is a 64GB DDR4-2666 ECC Load Reduced DIMM providing quad-rank x4 server memory for HPE ProLiant Gen10 servers — delivering CL22 latency at 2666MHz (PC4-21300) with 1.2V operation and LRDIMM load reduction for high-density 64GB per-slot memory configurations in HPE multi-socket server platforms.

Key Features

• 64GB DDR4-2666 ECC LRDIMM — 4Rx4 quad-rank for high-density DDR4 memory per slot
• CL22 latency at 2666MHz (slightly higher latency vs. CL19 variant P06182-001)
• Load Reduced DIMM (LRDIMM) enabling high-density 4-rank memory per channel
• 1.2V operation with LRDIMM electrical load reduction
• HPE-certified for ProLiant Gen10 platforms requiring 64GB LRDIMM modules

Product Specifications

• Part Number: 850882-001
• Manufacturer: HP / HPE
• Capacity: 64GB
• Type: DDR4 ECC Load Reduced DIMM (LRDIMM)
• Speed: 2666MHz (PC4-21300)
• CAS Latency: CL22
• Voltage: 1.2V
• Ranks x Width: 4Rx4
• Pins: 288-Pin

Memory Specifications

• ECC: Yes — ECC Load Reduced (LRDIMM)
• Form Factor: DIMM (288-pin, full-height)
• Error Correction: SECDED ECC with LRDIMM data buffer
• Memory Standard: PC4-21300 (DDR4-2666)

Performance Specifications

• Bandwidth: Up to 21,333 MB/s theoretical peak
• ECC Type: SECDED with LRDIMM 4-rank data buffer abstraction
• RAS Features: ECC, memory mirroring, rank sparing (platform dependent)

Use Cases

• 64GB per-slot DDR4 LRDIMM capacity in HPE ProLiant Gen10 servers
• High-density memory for in-memory databases, large VM workloads, and SAP HANA on Gen10
• CL22 variant for systems where CL19 64GB LRDIMM (P06182-001) is unavailable
• Replacing failed 64GB LRDIMM modules in existing HPE ProLiant Gen10 deployments

Compatibility

• HPE ProLiant Gen10 servers supporting DDR4 LRDIMM: DL360, DL380, DL560, DL580 Gen10
• Requires LRDIMM-capable DIMM slots — cannot be mixed with RDIMM modules
• CL22 vs. CL19: verify your server”s supported CAS latency range before ordering
• Verify HPE memory population guide per server model before installation

Frequently Asked Questions

What is the difference between 850882-001 and P06182-001?

Both are 64GB DDR4-2666 ECC 4Rx4 LRDIMMs for HPE ProLiant Gen10, but differ in CAS latency — 850882-001 is CL22 while P06182-001 is CL19. CL19 provides slightly lower latency and is generally preferred. Both are HPE-certified and functionally compatible in supported Gen10 servers.

Does CL22 vs. CL19 make a significant difference in server workloads?

In most server workloads, the difference between CL19 and CL22 DDR4-2666 is minimal in practice — typically less than 5% latency impact on real-world workloads. The primary consideration is HPE server compatibility: verify that your specific server model supports CL22 LRDIMMs via HPE”s memory compatibility matrix.

Can 850882-001 be mixed with P06182-001 in the same server?

Mixing CL22 and CL19 modules is generally not recommended and may not be supported by HPE. The memory controller typically adjusts all channels to the highest CAS latency, negating the performance advantage of CL19 modules. HPE recommends using identical modules across all channels for guaranteed compatibility and optimal performance.

The HP 850882-001 provides 64GB DDR4-2666 ECC LRDIMM capacity in a 4Rx4 CL22 configuration — delivering high-density per-slot DDR4 memory with LRDIMM load reduction for HPE ProLiant Gen10 servers requiring 64GB DIMM capacity for virtualization, in-memory database, and high-density enterprise workloads.