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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 8GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM for HP Z1 G5 G4 Tower

SKU CH-13K2-TG3XQ

8 GB DDR4 2666 MHz CL19 UDIMM upgrades HP Z1 G5, G4 Core X and G4 Tower workstations

  • Capacity8GB
  • Type288-Pin DDR4 Non-ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 8GB capacity lets you run more apps simultaneously
  • 2666MHz DDR4 speed boosts system responsiveness for demanding workloads
  • CL19 latency with 1.2V operation balances performance and power efficiency
  • 288-pin UDIMM fits HP Z1 G5, G4 Core X and G4 Tower workstations
  • JEDEC compliant and backward compatible with 2133MHz and 2400MHz systems

8GB DDR4-2666 for HP Z1 Workstations

This 8GB DDR4 module runs at 2666MHz with CL19 latency and 1.2V operation. It is built specifically for HP Z1 Workstation G5, G4 Core X and G4 Tower systems. The non-ECC unbuffered design suits standard workstation workloads.

JEDEC compliant 288-pin UDIMM

The 288-pin UDIMM fits the standard DDR4 slots in compatible HP Z1 towers. No heat spreader is fitted, keeping the module height low for tight chassis clearance. Backward compatibility with 2133MHz and 2400MHz systems allows use in older configurations.

Upgrade path for 2133MHz or 2400MHz memory

Replacing slower DDR4 modules with this 2666MHz kit raises memory bandwidth for multitasking and larger datasets. The jump is worth it when the workstation supports the higher speed and the workload benefits from extra throughput. Builders needing ECC or registered memory should look elsewhere.

Highlights

  • 8GB capacity lets you run more apps simultaneously
  • 2666MHz DDR4 speed boosts system responsiveness for demanding workloads
  • CL19 latency with 1.2V operation balances performance and power efficiency
  • 288-pin UDIMM fits HP Z1 G5, G4 Core X and G4 Tower workstations
  • JEDEC compliant and backward compatible with 2133MHz and 2400MHz systems

Specifications

BrandOWC
Part Number2U6D41R808GB
Capacity8GB
Type288-Pin DDR4 Non-ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP Z1 Workstation G5
HP Z1 Workstation G4 (Core X)
HP Z1 Workstation G4 Tower

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Questions about this item

Does the PC4-21300 2666MHz rating limit the module to 2666MHz in an HP Z1 G5?

The module runs at 2666MHz by default and will down-clock to 2400MHz or 2133MHz if the system requires a lower speed.

Will the 288-pin unbuffered DIMM fit the HP Z1 G4 Tower memory slots?

Yes, the 288-pin UDIMM form factor matches the desktop DIMM slots used in the Z1 G4 Tower.

What is the correct way to seat the module and what step do people often miss?

Align the notch with the slot key, press firmly until both side clips click shut, then verify the system reports the full 8GB at 2666MHz.

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