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Two green DDR4 DIMM modules with black chips, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM1024642666DIMM 16GB (2x8GB) DDR4 2666 CL19 memory upgrade

SKU CH-V4S6-S66HQ

16 GB DDR4 kit at 2666 MHz CL19, validated for EliteDesk 705 G5, 800 G5 and Z4 G4 workstations

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 16 GB dual-channel kit boosts multitasking headroom
  • DDR4 2666 MHz speed matches supported platform specs
  • CL19 latency keeps timing tight for everyday workloads
  • 2 V operation reduces power draw per module
  • Tested compatible with HP EliteDesk 705 G5, 800 G5 and Z4 G4 systems

16 GB DDR4 2666 Kit for HP Workstations

This 16 GB kit contains two 8 GB DDR4 2666 modules designed for HP EliteDesk 705 G5 SFF, 800 G5 Tower and SFF, and Workstation Z4 G4 (Core X) systems. Unbuffered, non-ECC DIMMs install directly into the 288-pin slots without additional configuration. The kit suits offices and professionals who need a straightforward capacity increase for these specific platforms.

Capacity and Headroom for DDR4 2666 Systems

Each module provides 8 GB at CL19 19-19-19 timing and 1.20 V, giving 16 GB total across the pair. The supported platforms offer four sockets and a maximum of 128 GB, so this kit occupies half the slots and leaves room for further expansion. Performance scales with the slowest installed module or CPU capability, so matching pairs are recommended for best results.

DDR4 2666 Interface Limits

The DDR4 2666 (PC4 21300) interface caps transfer rates at the rated speed, and all modules in the system will run at the lowest common frequency. A 64-bit operating system is required to address more than 4 GB of memory. Builders needing ECC, registered buffering, higher frequencies, or capacities beyond 128 GB must choose a different memory type.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $102.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.44 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM1024642666DIMM
Total capacity16 GB (2 × 8 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
Memory timings19-19-19
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP/Compaq EliteDesk 705 G5 Series SFF, 800 G5 Series Tower, 800 G5 Series SFF, Workstation Z4 G4 (Core X)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 2666 MHz DDR4 modules run at full speed alongside slower DDR4 sticks already in my EliteDesk 800 G5?

All memory in the system will run at the speed of the slowest installed module or the CPU capability, so mixing with slower DDR4 will downclock these 2666 MHz sticks.

How can I verify the kit is recognised at 2666 MHz with CL19 timings after installation?

Check the BIOS memory information or a tool such as CPU-Z; it should report 2666 MHz, CL19-19-19 timing and 1.20 V for each 8 GB module.

Does the package include only the two 8 GB DIMMs or are any brackets or cables supplied?

The package contains two 288-pin DDR4 DIMM modules; no brackets, cables or additional accessories are included.

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