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
Green rectangular DDR4 memory module with gold edge connectors and black chips on both sides, no heat spreader

OWC

OWC 64GB DDR4 3200MHz CL22 1.2V 288pin ECC Registered RDIMM memory upgrade

SKU CH-H5YY-P6TW0

64 GB DDR4 3200 MHz ECC registered RDIMM for Supermicro H11SSL-i, H11SSL-NC, H11SSW-iN, H12SSW-iN and H12DSG-O-CPU servers

  • Total capacity64 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB capacity lets you run large workloads and virtual machines
  • DDR4 3200 speed with CL22 latency delivers responsive server performance
  • ECC registered design detects and corrects data errors for reliability
  • 2V operation reduces power draw in dense configurations
  • Validated for Supermicro H11SSL-i, H11SSL-NC, H11SSW-iN, H12SSW-iN and H12DSG-O-CPU

Server ECC Registered RDIMM

This 64 GB DDR4 module is built for Supermicro H11SSL-i, H11SSL-NC, H11SSW-iN, H12SSW-iN and H12DSG-O-CPU motherboards. It targets administrators upgrading workstations or servers that require registered ECC memory. The DIMM will not function in standard desktop platforms and cannot be mixed with unbuffered modules.

64 GB capacity at DDR4 3200

The single stick delivers 64 GB of PC4-25600 bandwidth with CL22 latency and 1.2 V operation. Two-rank 2Rx4 organisation provides density for memory-intensive workloads such as virtualisation or large databases. Systems limited to lower speeds will downclock the module, and boards without registered-ECC support will not recognise it at all.

Passive operation at 1.2 V

No heat spreader is fitted, so the module relies on chassis airflow for cooling. Registered buffering and ECC logic add minimal power overhead while maintaining signal integrity at 3200 MT/s. In typical server environments the DIMM runs silently and draws only the current required for its 1.2 V specification.

How it compares

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

Price $423.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.62 per GB
Cheaper than about 60% 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 number3R2D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard H11SSL-i
Supermicro Motherboard H11SSL-NC
Supermicro Motherboard H11SSW-iN
Supermicro Motherboard H12SSW-iN
Supermicro Motherboard H12DSG-O-CPU

Other versions of this model

5 more in the same range

Questions about this item

Will this ECC Registered DDR4 module work alongside unbuffered DDR4 sticks already in my Supermicro board?

No, registered memory cannot be mixed with unbuffered modules; the board requires all slots to use registered DIMMs for stable operation.

How can I confirm the 64GB 3200MHz CL22 kit is running at its rated speed after installation?

Enter the BIOS or use a tool like dmidecode to verify the module reports DDR4 3200 PC4-25600 with CL22 timings at 1.2V.

Does the package include only the 288-pin RDIMM or are mounting brackets or cables also supplied?

Only the 64GB 288-pin DDR4 ECC Registered RDIMM is included; no brackets, cables or additional hardware are provided.

More in Model-Specific Memory Upgrades

Similar items