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Four green 288-pin DDR4 DIMM sticks, no heat spreader, 64GB kit

Computer Memory Solutions

Computer Memory Solutions CM2048642666DIMM 64GB (4×16GB) DDR4 2666MHz CL19 1.2V 288-pin DIMM memory upgrade

SKU CH-FZB2-TB2NZ

Four 16 GB DDR4 modules totalling 64 GB at 2666 MHz CL19, unbuffered non-ECC, validated for HP Z1 G5 and Z2 G4 workstations

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 64 GB total capacity across four 16 GB modules
  • DDR4 2666 MHz speed rated at PC4 21300
  • CL19 latency with 19-19-19 timing at 1.2 V
  • Unbuffered non-ECC 288-pin DIMM design
  • Validated for HP Z1 G5 and Z2 G4 workstations

64GB DDR4 kit for HP Z workstations

This 64GB kit contains four 16GB DDR4 2666MHz DIMMs built for HP Z1 G5, Z2 SFF G4 and Z2 Tower G4 workstations. The modules run at 1.2V with CL19 timings and are unbuffered non-ECC. They fill all four memory slots in the supported systems.

Suits owners of the listed HP workstations needing

Builders who need ECC error correction, registered modules, speeds above 2666MHz or a different form factor should look elsewhere. The kit is not compatible with laptops, consumer desktops or servers that require registered memory.

Four matched sticks enable quad-channel operation

Installing the full set lets the workstation run in quad-channel mode for maximum bandwidth. All modules come from Computer Memory Solutions and are tested together to avoid mixed-kit timing issues.

How it compares

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

Price $430.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.73 per GB
Cheaper than about 59% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048642666DIMM
Total capacity64 GB (4 × 16 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 items4 Memory RAM Sticks

Questions about this item

Does my HP Z2 SFF G4 need four empty 288-pin slots to install this 64GB kit?

Yes, the kit contains four 16GB DIMMs and the Z2 SFF G4 provides four DDR4 slots, so all four must be free for a full 64GB installation.

If I keep two 16GB 2666MHz sticks already in my Z2 Tower G4, will this kit run at CL19 alongside them?

All modules will operate at the slowest installed speed and timing; mixing with existing CL19 2666MHz sticks keeps the kit at its rated CL19, but any slower modules would reduce overall performance.

How can I confirm the system recognises all 64GB at 2666MHz after fitting the four DIMMs?

Boot into a 64-bit OS, open Task Manager or BIOS and verify the total shows 64GB running at 2666MHz with timings reported as 19-19-19.

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