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Two green circuit boards with black memory chips and gold edge connectors

Computer Memory Solutions

Computer Memory Solutions 32GB (2x16GB) DDR4 2666 CL19 DIMM

SKU CH-S43X-ET1PT

32 GB dual-channel DDR4-2666 kit with CL19 timing for HP Z1 G5 and Z2 G4 workstations

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19
  • Voltage1.20V
  • 32 GB dual-channel kit enables full 64 GB capacity across four slots
  • 2666 MHz DDR4 speed matches PC4-21300 specification for supported HP workstations
  • CL19 19-19-19 timing at 1.20 V delivers stable unbuffered operation
  • 2Rx8 288-pin DIMM modules install directly in Z1 G5 and Z2 G4 systems
  • Major-brand chipset with lifetime warranty ensures reliable long-term performance

Compatible Workstation Memory

This 32GB kit contains two 16GB DDR4 DIMMs validated for HP Z1 G5, Z2 SFF G4 and Z2 Tower G4 workstations. Each module runs at 2666MHz with CL19 timings and 1.20V operation. The unbuffered, non-ECC design fits the 288-pin slots in these specific systems.

Sustained Load Behaviour

Under continuous workloads the memory operates at its rated 2666MHz speed and 19-19-19 timings without thermal throttling, as no heat spreader is fitted. All installed modules will run at the slowest speed present, so mixing with slower DIMMs reduces overall throughput.

DDR4 Platform Limits

The supported workstations accept a maximum of 64GB across four sockets, so this 32GB kit leaves two slots free for future expansion. A 64-bit operating system is required to address more than 4GB of memory. The modules use major-brand chipsets in a 2Rx8 configuration.

Highlights

  • 32 GB dual-channel kit enables full 64 GB capacity across four slots
  • 2666 MHz DDR4 speed matches PC4-21300 specification for supported HP workstations
  • CL19 19-19-19 timing at 1.20 V delivers stable unbuffered operation
  • 2Rx8 288-pin DIMM modules install directly in Z1 G5 and Z2 G4 systems
  • Major-brand chipset with lifetime warranty ensures reliable long-term performance

Specifications

BrandComputer Memory Solutions
ModelCM2048642666DIMM
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Timing19-19-19
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemHP/Compaq Workstation Z1 G5, Z2 Small Form Factor G4 (SFF) , Z2 Tower G4 non ec
Package Content2 Memory RAM Sticks

Questions about this item

Does the 1.20V DDR4 2666 kit run hot or draw extra power during all-day workloads?

Standard 1.20V DDR4 modules operate at JEDEC voltage, so they add minimal heat and power draw even under sustained load.

What must the HP workstation already have — CPU, chipset, BIOS — for these 288-pin DIMMs to be recognised?

The kit is validated for HP Z1 G5, Z2 SFF G4 and Z2 Tower G4 non-ECC platforms; a 64-bit OS is required to address the full 32GB.

If I keep the original 16GB sticks, will the mixed 2Rx8 ranks down-clock the new 32GB kit?

All installed memory runs at the slowest module speed; mixing ranks may force the 2666MHz kit to drop to the lower frequency of the existing DIMMs.

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