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Four green DDR3L 240-pin ECC registered DIMM modules

OWC

OWC 64GB (4x16GB) DDR3L 1600 CL11 ECC Registered RDIMM 240-pin 1.35V memory upgrade

SKU CH-9NRK-PKDXA

64 GB DDR3L 1600 ECC registered RDIMM kit with four 16 GB modules for Supermicro X9-series motherboards

  • 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 servers
  • 64GB kit with four 16GB modules expands capacity
  • DDR3L 1600 CL11 speed matches system requirements
  • 35V low voltage reduces power consumption
  • Compatible with Supermicro X9DRL X9DRT X9DRW X9DRX+ X9QR7 motherboards

OWC 64GB DDR3L ECC RDIMM Kit

This 64GB kit contains four 16GB DDR3L 1600 CL11 registered ECC modules. It is built for Supermicro X9DRL, X9DRT, X9DRW, X9DRX+ and X9QR7 motherboards in workstation and server roles. Standard desktop systems cannot use registered memory.

240-pin 1.35V Registered Design

Each module uses a 240-pin DDR3L form factor at 1.35V with 2Rx4 organisation and no heat spreader. Registered buffering reduces electrical load on the memory controller, allowing high-capacity configurations in multi-socket boards. The low-voltage DDR3L specification cuts power draw compared with standard DDR3.

Verify Registered ECC Support Before Ordering

Confirm your motherboard requires registered ECC RDIMMs and does not accept unbuffered DIMMs; mixing the two types will prevent boot. Check that all four slots can be populated with 16GB 2Rx4 modules at 1600MHz. Buyers needing unbuffered memory or non-ECC operation should select a different kit.

How it compares

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

Price $182.99
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 $2.86 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

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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 Motherboard X9DRL Series
Supermicro Motherboard X9DRT Series
Supermicro Motherboard X9DRW Series
Supermicro Motherboard X9DRX+ Series
Supermicro Motherboard X9QR7 Series

Other versions of this model

5 more in the same range

Questions about this item

Does the DDR3L 1600 PC3L-12800 interface cap real-world throughput at 12800 MB/s?

The PC3L-12800 rating sets a peak transfer ceiling of 12800 MB/s; actual sustained bandwidth will be lower due to CL11 latency and system overhead.

Will these 240-pin 2Rx4 RDIMMs fit the DIMM slots on a Supermicro X9DRX+ motherboard?

Yes, the 240-pin form factor matches the X9DRX+ DDR3L slots; each 16 GB module uses a 2Rx4 organisation that the board supports.

What is the correct installation sequence for the four 16 GB sticks, and which step do builders often miss?

Populate the four modules in the motherboard's prescribed channel order — usually slots A1, B1, C1, D1 — and ensure each registered DIMM clicks fully into both latches; the missed step is verifying the latch engagement on every module.

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