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Green circuit board with black memory chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM2048642666DIMM 16GB DDR4 2666MHz CL19 HP Z1 G5 Z2 G4 SFF Tower memory upgrade

SKU CH-YA0X-CBJ0W

16GB DDR4 2666MHz CL19 unbuffered DIMM for HP Z1 G5 and Z2 G4 workstations

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 16 GB capacity adds headroom for heavy workloads
  • 2666 MHz DDR4 speed matches supported platform spec
  • CL19 timing keeps latency low at rated frequency
  • 2 V operation reduces power draw and heat
  • validated for HP Z1 G5 and Z2 G4 workstations

HP Workstation Compatible DDR4 Upgrade

This 16GB DDR4 DIMM is built for HP Z1 G5, Z2 SFF G4 and Z2 Tower G4 workstations that require non-ECC memory. It installs as a single 288-pin module running at 2666MHz with CL19 timing and 1.20V operation.

DDR4 2666MHz Interface Limits

The DDR4 2666 standard caps transfer rates at 21300 MT/s, so this module cannot exceed that ceiling. Mixing it with slower DDR4 will force all memory to run at the lowest installed speed, and the platform tops out at four populated sockets.

16GB Module Within 64GB Maximum

A single 16GB stick leaves three slots open on the four-socket platform, allowing expansion up to the 64GB system limit. Buyers who want more storage than 64GB total or who need ECC error correction cannot use this non-ECC kit.

How it compares

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

Price $81.99
Cheaper than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.12 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048642666DIMM
Total capacity16 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 Workstation Z1 G5, Z2 Small Form Factor G4 (SFF) , Z2 Tower G4 non ec
In the box
Included items1 Memory RAM Stick

Questions about this item

Should I choose the single 16 GB DIMM or look for a matched pair kit for my HP Z2 G4?

The product is sold as one 16 GB stick; to maximise performance the manufacturer recommends installing modules in matched pairs, so a two-stick kit would be preferable if you have free slots.

What does the 2666 MHz rating mean once the module is installed in a Z1 G5?

The memory will run at up to 2666 MHz, but the system will operate at the slowest speed among all installed modules or the processor's memory controller limit.

Is the 288-pin DDR4 interface compatible with the four DIMM slots in my Z2 Tower G4?

Yes, the 288-pin DDR4 DIMM fits the four slots on that platform and the board supports a maximum of 64 GB total.

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