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Four green DDR3 server memory modules with gold contacts and black chips

OWC

OWC 64GB (4x16GB) DDR3 1600 CL11 2Rx4 240-pin 1.5V ECC Registered RDIMM server RAM

SKU CH-0T2T-1M3XM

Four 16 GB DDR3-1600 CL11 ECC registered RDIMMs at 1.5 V totalling 64 GB for servers and workstations

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB (4 x 16GB)

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • 64GB total capacity across four 16GB modules
  • DDR3 1600 speed with CL11 latency for responsive performance
  • 5V JEDEC standard voltage ensures broad compatibility
  • 240-pin registered DIMM form factor fits workstation and server slots

OWC 64GB DDR3 ECC Registered Kit

This OWC kit supplies 64GB of DDR3 1600 PC3-12800 memory in four 16GB registered DIMMs. Each module runs at CL11 latency and 1.5V with 2Rx4 organisation and ECC error correction. The 240-pin form factor fits server and workstation platforms that require registered memory.

Suited for ECC server upgrades.

The modules are designed for workstations, servers, NAS systems and routers that accept DDR3 ECC registered RDIMMs. They will not work in standard desktop computers that need unbuffered memory, and they cannot be mixed with unbuffered DIMMs. Buyers whose systems require unbuffered memory should choose a different kit.

Registered ECC with 2Rx4 rank decides fit

The single specification that determines compatibility is the registered ECC design with 2Rx4 rank on a 240-pin DDR3 interface. Only platforms that explicitly support registered ECC DDR3 at 1600 MT/s and 1.5V can use this memory. Confirm the motherboard or system manual lists this exact configuration before ordering.

How it compares

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

Price $168.99
Typical for this category: the median of 6,523 items is $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 $2.64 per GB
Cheaper than about 91% 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 number1R6D32R4064S
Total capacity64 GB (4 × 16 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.5 V

Other versions of this model

5 more in the same range

Questions about this item

Will the 240-pin DDR3 DIMMs fit my server's memory slots?

Yes, these are 240-pin DDR3 registered DIMMs that require DDR3 RDIMM slots supporting 1.5V operation and ECC registered memory; they will not fit standard desktop UDIMM slots.

How do I install the four 16GB modules correctly for dual-channel operation?

Populate the four DIMMs in matched pairs across the two memory channels according to your motherboard manual; the common mistake is placing all modules in one channel or mixing registered with unbuffered memory.

What maintenance or replacement will this 64GB kit need over time?

No routine maintenance is required; if a module fails it is covered by a limited lifetime warranty with advanced replacement, and the JEDEC-standard 1.5V DDR3 RDIMMs are designed for long-term server operation.

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