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Black 288-pin DDR5 DIMM module with gold contacts

HPE

HPE P43322-B21 16GB DDR5 4800MHz CL40 1.10V Registered DIMM server RAM

SKU CH-3PJ4-V6R07 MPN P43322-B21

16 GB DDR5 registered DIMM running at 4800 MHz with CL40 latency and 1.10 V for server platforms

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Memory profilesIntel XMP 3.0
  • Product colorBlack
  • 16 GB DDR5 capacity for high-density server workloads
  • 4800 MHz speed with PC5-38400 bandwidth for fast data throughput
  • CL40 latency at 1.10 V for efficient registered operation
  • Single-rank 288-pin DIMM design for broad platform compatibility
  • Intel XMP 3.0 profile support for simplified BIOS tuning

HPE 16GB DDR5 Registered DIMM

This HPE module provides 16GB of DDR5 memory rated at 4800MHz with a CL40 latency. It operates at 1.10V using a registered 288-pin DIMM form factor designed for server, rack and blade platforms. The single-rank configuration supports Intel XMP 3.0 profiles for validated performance tuning.

Thermals and power at standard speed

Running at the rated 4800MHz frequency and 1.10V, the module draws minimal power appropriate for dense server deployments. Registered buffering reduces electrical load on the memory controller, contributing to stable thermals inside populated chassis. Passive operation relies on system airflow rather than module-mounted cooling.

Behaviour under sustained load

The registered design maintains signal integrity during continuous workloads across all populated slots. Single-rank organisation allows consistent bandwidth delivery without the timing penalties seen in dual-rank alternatives under prolonged stress. Intel XMP 3.0 support ensures the programmed profile remains stable over extended operating periods.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $1,820.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $113.81 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameHPE
Total capacity16 GB
Product colorBlack
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
Memory profilesIntel XMP 3.0
Power
Rated voltage1.1 V
Size & build
Shipping weight0.05 kg
Package size100 × 50 × 20 mm

Questions about this item

How do I install this 288-pin DDR5 registered DIMM and what step do people often miss?

Align the notch with the slot key, press firmly until both retention clips click, then verify in BIOS that the module runs at 4800 MHz with CL40 timings.

What maintenance or replacement will this 1.10V DDR5 module need over time?

No scheduled maintenance is required; if a memory error appears in the server event log, replace the affected 16 GB DIMM with an identical registered module.

What limit appears first when this single-rank DDR5 memory runs under sustained load?

The CAS latency of CL40 at 4800 MHz sets the timing floor; sustained throughput cannot exceed the PC5-38400 bandwidth ceiling.

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