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Green rectangular circuit board with gold contacts and black memory chips

OWC

OWC 4R8D52R464GB 64GB DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-D65S-MTC1V

64 GB DDR5 ECC RDIMM running at 4800 MT/s with CL40 latency for Gigabyte H273-Z82, MZ33-AR0, MZ33-CP0, MZ73-LM0 and MZ73-LM1 servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • ECC registered design protects data integrity in servers
  • 64GB capacity extends multitasking headroom for workstations
  • DDR5 4800 speed matches JEDEC PC5-38400 standard
  • 1V operation reduces power draw per module
  • Validated for Gigabyte H273-Z82, MZ33-AR0, MZ33-CP0, MZ73-LM0, MZ73-LM1

Targeted server upgrade

This OWC module delivers 64GB of DDR5 4800 memory in a single 288-pin ECC Registered RDIMM. It is built for Gigabyte H273-Z82, MZ33-AR0, MZ33-CP0, MZ73-LM0 and MZ73-LM1 workstations and servers. The 2Rx4 organisation and 1.1V operation match the platform requirements exactly. It will not work in standard desktop computers or alongside unbuffered or load-reduced DIMMs.

Sustained workload behaviour

ECC correction and registered signalling keep data integrity intact during continuous operation in servers, NAS systems and network switches. The CL40 latency and PC5-38400 bandwidth provide stable throughput for multi-threaded services and virtualisation hosts. JEDEC and RoHS compliance ensures the module meets industry specifications for long-term deployment without error-rate drift.

Replaces lower-capacity RDIMMs

Installing this 64GB stick upgrades from smaller registered ECC modules to maximise memory density per slot. The jump is worthwhile when current capacity limits container counts, database caching or virtual machine density. It does not add slots, so total capacity still depends on the motherboard's DIMM count and maximum supported memory.

How it compares

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

Price $1,353.99
Pricier than about 63% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 40
Higher than about 70% of the 483 comparable items (median 22).
Price per GB $21.16 per GB
Pricier than about 66% 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 number4R8D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsGigabyte H273-Z82
Gigabyte MZ33-AR0
Gigabyte MZ33-CP0
Gigabyte MZ73-LM0
Gigabyte MZ73-LM1

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.1V DDR5 4800 module draw when the server runs continuously?

At 1.1 volts the DDR5 4800 registered DIMM operates within standard JEDEC power limits for continuous server workloads.

Which motherboard must I already have to install this 288-pin ECC RDIMM?

The module is validated for Gigabyte H273-Z82, MZ33-AR0, MZ33-CP0, MZ73-LM0 and MZ73-LM1 systems.

Can I add this 2Rx4 registered stick alongside older unbuffered ECC DIMMs in the same platform?

No — registered memory cannot be mixed with unbuffered or load-reduced ECC modules on the same motherboard.

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