We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR5 RDIMM modules in a row

OWC

OWC 64GB (4×16GB) DDR5 4800 CL40 1Rx4 288-pin 1.1V ECC Registered RDIMM server RAM

SKU CH-07RZ-T2G9B

A 64 GB DDR5 ECC registered RDIMM kit of four 16 GB modules running at 4800 MT/s with CL40 latency and 1.1 V operation

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 64GB (4 x 16GB)

  • 64 GB total capacity from four 16 GB modules
  • DDR5 4800 speed with CL40 latency for responsive server workloads
  • ECC registered design detects and corrects data errors automatically
  • 1 V operation reduces power draw in dense configurations
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server-grade ECC RDIMM kit

This 64GB kit contains four 16GB DDR5 4800 CL40 registered DIMMs built for workstations and servers that require error-correcting memory. It operates at 1.1V and conforms to JEDEC PC5-38400 specifications.

Registered ECC is mandatory

The modules are 1Rx4 registered ECC RDIMMs; they will only function in platforms that explicitly support registered ECC DDR5 and cannot be mixed with unbuffered or load-reduced DIMMs.

Four-slot population

Populating four slots delivers 64GB in a dual-channel configuration, leaving additional slots free for future expansion if the motherboard provides more than four DDR5 RDIMM sockets.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $1,678.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $26.23 per GB
Pricier than about 87% of the 6,064 comparable items (median $7.25 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 number4R8D51R4064S
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

What does the 4800 MT/s speed mean once the kit is installed in a server?

The modules run at the JEDEC-standard 4800 MT/s data rate with CL40 latency, delivering the rated PC5-38400 bandwidth when the platform supports DDR5-4800.

How does the DDR5-4800 interface and CL40 timing cap real-world throughput?

Peak transfer is limited to the PC5-38400 specification; actual throughput depends on the memory controller and channel population.

What physical slot and clearance do the 288-pin RDIMMs require?

Each 16 GB module uses a standard 288-pin DDR5 RDIMM connector and has no heat spreader, so it fits in any DDR5 RDIMM socket with normal vertical clearance.

More in ECC Server RAM

Similar items