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Green PCB memory module with gold contacts and black heat spreader

HPE

HPE P07642-B21 16GB DDR4 3200 Registered CL22 2Rx8 memory upgrade

SKU CH-PG61-W7T7A MPN P07642-B21

16 GB DDR4 3200 registered module with CL22 timing and 2Rx8 organisation for server memory upgrades

  • Capacity16GB
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Timing22-22-22
  • Voltage1.20V
  • Buffered/RegisteredRegistered
  • 16 GB DDR4 3200 capacity for demanding server workloads
  • Registered design with CL22 timing for signal integrity at scale
  • 2Rx8 dual-rank organisation increases memory density per slot
  • 20 V DDR4 voltage reduces power draw in dense configurations
  • PC4 25600 bandwidth supports high-throughput data processing

Server DDR4 Upgrade

The HPE P07642-B21 is a 16GB registered DDR4 module rated at 3200 MT/s with CL22 timing and 1.20V operation. It targets administrators expanding memory capacity in compatible HPE server platforms that require registered ECC DIMMs.

Registered DIMM Replacement

This module replaces older registered DDR4 sticks running at lower speeds or smaller capacities when the platform supports PC4-25600. The upgrade is worthwhile when the memory controller can operate at the full 3200 MT/s data rate and the system qualifies this specific part number.

Sustained Load Behaviour

Under continuous workloads the registered buffer helps maintain signal integrity across multiple ranks. The 2Rx8 organisation and CL22 latency deliver stable throughput at the rated voltage without exceeding the standard DDR4 thermal envelope.

Highlights

  • 16 GB DDR4 3200 capacity for demanding server workloads
  • Registered design with CL22 timing for signal integrity at scale
  • 2Rx8 dual-rank organisation increases memory density per slot
  • 20 V DDR4 voltage reduces power draw in dense configurations
  • PC4 25600 bandwidth supports high-throughput data processing

Specifications

BrandHPE
ModelP07642-B21
Capacity16GB
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Timing22-22-22
Voltage1.20V
Buffered/RegisteredRegistered
Rank2Rx8
Shipping weight0.09 kg
Package size254 × 127 × 51 mm

Questions about this item

Will the 288-pin DDR4 DIMM fit the registered memory slots in my HPE server?

The module is a standard 288-pin DDR4 registered DIMM built to the PC4-25600 specification, so it seats in any compatible HPE server slot that accepts registered DDR4 memory.

What is the correct seating procedure for this registered DDR4 module, and which step is most often missed?

Align the notch with the slot key, press straight down until both side latches click, then verify the latches are fully locked — the final latch check is the step most often skipped.

When should I expect to replace this 16GB 2Rx8 registered DDR4 module in a production server?

Registered DDR4 memory has no scheduled replacement interval; replace the module only if diagnostics report correctable errors that become uncorrectable or if a firmware update explicitly requires a newer revision.

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