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OWC

OWC 512GB (4x128GB) DDR4-2933 ECC LRDIMM for HP Z8 G4

SKU CH-8A7F-49J5M

A 512GB kit of four 128GB DDR4-2933 ECC load-reduced DIMMs validated for the HP Z8 G4 workstation

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 512GB (4 x 128GB)

  • ECC load-reduced design protects data integrity in critical workloads
  • 512 GB total capacity across four 128 GB modules expands memory headroom
  • DDR4-2933 speed with CL21 latency delivers responsive throughput
  • 2 V operation reduces power draw under load
  • Backward compatible with 2133, 2400 and 2666 MHz systems for flexible deployment

Capacity and Configuration

This kit provides 512GB of DDR4 memory across four 128GB modules. It is built for the HP Workstation Z8 G4 and uses the 288-pin LRDIMM form factor with ECC and load-reduced buffering.

Workstation and Server Focus

The modules suit users upgrading or repairing an HP Z8 G4 that requires registered ECC LRDIMM memory. They will not work in standard desktop boards, nor can they be mixed with unbuffered or standard registered DIMMs.

Sustained Operation

Running at 2933MHz with CL21 latency and 1.2V, the kit maintains JEDEC-compliant stability under continuous load. Backward compatibility with 2133MHz, 2400MHz and 2666MHz speeds allows the system to train reliably at lower frequencies when populated fully.

How it compares

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

Price $2,577.99
Pricier than about 71% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.04 per GB
Cheaper than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L9D44R4512S
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP Workstation Z8 G4

Other versions of this model

5 more in the same range

Questions about this item

Does the HP Z8 G4 workstation need to support DDR4 ECC LRDIMM memory for this 512GB kit to work?

Yes, the HP Z8 G4 must support DDR4 ECC Load Reduced DIMMs; this kit uses 288-pin 4Rx4 modules at 1.2V and will not work with unbuffered or registered ECC memory.

Can I keep my existing 2133MHz, 2400MHz or 2666MHz DDR4 ECC LRDIMMs and add these 2933MHz modules?

The kit is backward compatible with 2133MHz, 2400MHz and 2666MHz speeds, but all modules must be ECC Load Reduced; mixing with unbuffered or registered ECC DIMMs is not supported.

How can I verify the kit is running at the correct 2933MHz speed and CL21 latency after installation?

Check the system BIOS or a hardware utility such as CPU-Z; it should report DDR4-2933 (PC4-23400) at CL21 for each of the four 128GB modules.

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