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Four green DDR3L ECC RDIMM modules in anti-static tray

OWC

OWC 1R6T32R4064S 64GB (4x16GB) DDR3L 1600 ECC RDIMM memory upgrade

SKU CH-DR7Z-WF08D

64 GB DDR3L ECC registered kit of four 16 GB modules at 1600 MHz for Supermicro SuperServer 1027 and 2027 series

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB (4 x 16GB)

  • ECC registered design protects data integrity in server workloads
  • 64GB kit with four 16GB modules expands Supermicro SuperServer capacity
  • DDR3L 1600 speed at 1.35V lowers power draw versus standard DDR3
  • CL11 latency and 2Rx4 organisation suit registered DIMM slots
  • 240-pin form factor fits 1027 and 2027 series SuperServer systems

Server memory kit

This 64 GB kit contains four 16 GB DDR3L 1600 registered ECC DIMMs built for Supermicro SuperServer 1027 and 2027 series. The modules run at 1.35 V with CL11 latency and a 2Rx4 organisation. They are designed for workstation, server, NAS and router platforms that require registered memory.

Registered ECC only

Suitable for administrators upgrading compatible Supermicro servers or building new systems that demand ECC registered DDR3L. Not for standard desktop PCs, laptops or any platform that accepts only unbuffered non-ECC modules. Buyers who need consumer memory or a different form factor should look elsewhere.

64 GB registered capacity

Four slots provide 64 GB of error-correcting registered memory for multi-threaded server workloads and virtualisation. Headroom ends when the platform’s maximum supported memory or slot count is reached, or when an application requires faster speeds or a newer DDR generation.

How it compares

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

Price $179.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $2.81 per GB
Cheaper than about 91% 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 number1R6T32R4064S
Total capacity64 GB (4 × 16 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsSupermicro SuperServer 1027B Series
Supermicro SuperServer 1027GR Series
Supermicro SuperServer 1027R Series
Supermicro SuperServer 1027TR Series
Supermicro SuperServer 2027GR Series

Other versions of this model

5 more in the same range

Questions about this item

Does this kit require a Supermicro SuperServer 1027 or 2027 series motherboard with 240-pin DDR3L registered DIMM slots?

Yes, the 4×16 GB modules are 240-pin DDR3L 1600 ECC registered RDIMMs validated for Supermicro SuperServer 1027B, 1027GR, 1027R, 1027TR and 2027GR series systems.

Can I add these 1.35 V CL11 2Rx4 modules alongside existing unbuffered DDR3L DIMMs in the same server?

No, the manufacturer states this ECC registered memory cannot be mixed with unbuffered memory; all populated slots must use registered modules.

After installation, how can I confirm the full 64 GB is recognised at 1600 MHz with ECC active?

Check the BIOS memory summary or run dmidecode / lshw on Linux — each of the four slots should show 16 GB, DDR3L-1600, CL11, 1.35 V, ECC registered, 2Rx4.

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