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Green printed circuit board with black memory chips and gold edge connectors

OWC

OWC 4GB DDR4 2133MHz CL15 1.2V 288pin UDIMM for HP Z240 Workstation SFF Tower

SKU CH-1B2R-KY99H

4GB DDR4 2133MHz CL15 UDIMM upgrades HP Z240 SFF and Tower workstations

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8
  • 4GB capacity adds multitasking headroom for HP Z240 SFF and Tower
  • DDR4 2133MHz CL15 speed matches system specification for stable operation
  • 2V low voltage reduces power draw and heat in compact chassis
  • 288-pin UDIMM form factor fits Z240 memory slots without adapters
  • JEDEC and RoHS compliant for warranty-safe upgrade confidence

HP Z240 DDR4 upgrade

This OWC module adds 4 GB of DDR4 2133 MHz memory to HP Z240 Workstation SFF and Tower systems. It uses a 288-pin UDIMM form factor with CL15 latency and 1.2 V operation. The stick is non-ECC, unbuffered and single-rank.

Suits owners of compatible HP workstations

It fits users who want a straightforward capacity increase for everyday multitasking and office workloads. Builders needing ECC error correction, higher frequencies or larger single-module capacities should look elsewhere.

4 GB single module headroom

The 4 GB capacity handles typical productivity tasks and light multitasking comfortably. Memory-intensive workloads such as large datasets, virtualisation or heavy content creation will exhaust this module quickly.

How it compares

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

Price $27.99
Cheaper than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $7.00 per GB
Cheaper than about 57% 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 nameOWC
Part number2U1D41R804 GB
Total capacity4 GB
Product type288-Pin DDR4 Non-ECC UDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP Z240 Workstation SFF
HP Z240 Workstation Tower

Other versions of this model

5 more in the same range

Questions about this item

Does the HP Z240 SFF need a free 288-pin DDR4 UDIMM slot to accept this 4 GB module?

Yes — the module is a 288-pin unbuffered DDR4 DIMM, so an empty DDR4 UDIMM slot on the Z240 SFF motherboard is required.

Will this CL15 2133 MHz stick run at its rated speed if I keep my existing 2133 MHz memory in the other slots?

The Z240 memory controller will match the slowest installed module; since both are 2133 MHz CL15, the new stick will operate at its rated 2133 MHz.

How can I confirm the system sees the full 4 GB after I install the stick?

Open Task Manager or BIOS on the Z240 and verify the installed memory total has increased by 4 GB and shows DDR4 2133 MHz.

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