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Four green DDR3L RDIMM modules with gold contacts and black chips

OWC

OWC 1R6T31R4032S 32GB (4x8GB) DDR3L 1600 CL11 ECC Registered RDIMM memory upgrade

SKU CH-F4DQ-5N79D

32 GB DDR3L 1600 ECC registered RDIMM kit (4 × 8 GB) for Supermicro SuperServer 4047R, 4048B, 5017GR, 5017R and 5027R systems

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 32GB (4 x 8GB)

  • ECC registered design protects data integrity in servers
  • DDR3L 1600 CL11 timing matches Supermicro specifications
  • 35 V operation lowers power draw for dense configs
  • 32 GB kit (4 × 8 GB) fills four 240-pin slots
  • Validated replacement for Supermicro MEMDR3 part numbers

OWC DDR3L ECC RDIMM kit

This OWC kit provides 32GB of DDR3L 1600 memory across four 8GB registered DIMMs. It is built for Supermicro SuperServer 4047R, 4048B, 5017GR, 5017R and 5027R systems that require ECC registered modules. The 1Rx4 organisation and CL11 timing match the original Supermicro part numbers. Desktop or unbuffered platforms cannot use this memory.

Low voltage registered operation

Each module runs at 1.35V, reducing power draw compared to standard DDR3 in always-on server roles. The registered buffer lightens electrical load on the memory controller, helping stability in multi-DIMM configurations. No heat spreader is fitted, so airflow through the chassis handles the modest thermal output. Acoustic impact is negligible in typical rack environments.

Sustained load behaviour

Under continuous workloads the registered design maintains signal integrity across all four slots without timing degradation. ECC correction operates transparently during extended compute or storage tasks. The kit replaces Supermicro MEMDR380LHL07ER16, MEMDR380LSL10ER16, MEMDR380LSL14ER16 and MEMDR380LSV04ER16 modules. It is not suitable for systems that only accept unbuffered DIMMs.

How it compares

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

Price $87.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.75 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6T31R4032S
Total capacity32 GB (4 × 8 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsSupermicro SuperServer 4047R Series
Supermicro SuperServer 4048B Series
Supermicro SuperServer 5017GR Series
Supermicro SuperServer 5017R Series
Supermicro SuperServer 5027R Series

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 240-pin DDR3L RDIMMs in a Supermicro SuperServer 4047R, and what step is often missed?

Power down the server, open the chassis, align each module's notch with the slot key, press firmly until both retention clips lock, then verify in BIOS that all 32GB are detected at 1600 MHz; the step often missed is seating all four modules before the first boot so the memory controller trains the full quad-channel array.

What maintenance or replacement will the 1.35 V ECC registered kit need over its service life?

No scheduled maintenance is required; the modules have no heat spreaders or moving parts, so only a failed DIMM would need replacement, and ECC error logs will flag a bad rank long before data loss occurs.

What limit appears first when the four 8 GB 1Rx4 modules run sustained workloads in a 5027R?

The memory controller's maximum supported frequency of 1600 MHz is the first ceiling; the kit already operates at that JEDEC-rated speed, so sustained loads cannot push it higher without exceeding specification.

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