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Eight green DDR4 RDIMM modules with gold contacts and black chips

OWC

OWC 512GB (8×64GB) DDR4 2933 ECC Registered RDIMM memory upgrade

SKU CH-J4XK-KAX90

Eight 64 GB DDR4 2933 ECC registered RDIMMs totalling 512 GB for HP Z6 G4 workstations

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 512GB (8 x 64GB)

  • 512 GB total capacity from eight 64 GB modules
  • ECC registered design protects data integrity in workstations
  • DDR4 2933 MHz CL21 at 1.2 V for efficient performance
  • 288-pin RDIMM form factor fits HP Z6 G4 slots
  • Backward compatible with 2133, 2400 and 2666 MHz systems

512 GB DDR4 ECC RDIMM kit for HP Z6 G4

This 512 GB kit contains eight 64 GB DDR4 2933 CL21 registered ECC modules built for the HP Workstation Z6 G4. Each 288-pin RDIMM runs at 1.2 V with a 2Rx4 organisation and no heat spreader. The memory is validated as a direct replacement for the listed HP part numbers.

Who should use this memory

Workstation and server builders who need registered ECC DDR4 for the HP Z6 G4 will find a matched eight-module set here. Buyers with standard desktop motherboards cannot use registered DIMMs. Systems that require unbuffered ECC or load-reduced DIMMs are also incompatible with this kit.

Registered ECC DDR4 2933 CL21 at 1.2 V

The modules operate at DDR4 2933 (PC4-23400) with CL21 latency and 1.2 V. Registered ECC signalling is mandatory for the target platform. Backward compatibility with 2133, 2400 and 2666 MHz speeds is supported.

How it compares

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

Price $3,193.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $6.24 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D42R4512K
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP Workstation Z6 G4

Other versions of this model

5 more in the same range

Questions about this item

Does the 288-pin DDR4 RDIMM form factor fit the HP Workstation Z6 G4 memory slots?

Yes, the 288-pin DDR4 ECC Registered DIMM form factor matches the HP Workstation Z6 G4 memory slots exactly.

What is the correct installation sequence for the eight 64GB modules in the Z6 G4?

Populate all eight slots following the Z6 G4 memory population guide; the step most often missed is placing modules in the correct channel order for 8×64GB.

When should the 1.2V ECC Registered RDIMMs be replaced in a Z6 G4?

Replace modules only if ECC logs report correctable errors rising above threshold or the system fails memory diagnostics.

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