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Four green DDR3 ECC registered DIMMs in static bags

OWC

OWC 64GB (4x16GB) DDR3 1600 ECC Registered RDIMM 1R6D32R4064S

SKU CH-0MJ9-SEE8J

Four 16 GB DDR3 1600 ECC registered RDIMMs add 64 GB to Supermicro SuperServer 1027GR systems

  • 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)

  • ECC registered design protects data integrity in servers
  • 64GB kit with four 16GB modules expands capacity
  • DDR3 1600 CL11 speed matches system requirements
  • 5V operation keeps power draw low
  • Validated for Supermicro SuperServer 1027GR series

Server ECC RDIMM kit

This OWC kit supplies 64 GB of DDR3 1600 registered ECC memory across four 16 GB modules. It is built for Supermicro SuperServer 1027GR systems that require 240-pin RDIMMs. The kit will not work in standard desktop motherboards or with unbuffered DIMMs. Buyers who need consumer DDR3 or non-ECC memory should look elsewhere.

Registered ECC specification

The decisive specification is the registered ECC design with 2Rx4 organisation and CL11 latency at 1.5 V. Only platforms that explicitly support registered DDR3 ECC RDIMMs can use this kit. Systems limited to unbuffered memory or a different DDR generation cannot accept these modules.

Matched four-module kit

The four matched 16 GB modules let the server populate a full channel set for maximum capacity without mixing ranks. No additional accessories or software are included in the package. Buyers who need a different capacity or a smaller module count must choose another 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 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
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsSupermicro SuperServer 1027GR Series

Other versions of this model

4 more in the same range

Questions about this item

What does the CL11 timing mean once the modules are installed in a Supermicro SuperServer 1027GR?

CL11 is the CAS latency at DDR3 1600; the server's memory controller will run the kit at this timing when the DIMMs are populated according to the system's population rules.

What does the PC3-12800 rating cap in practice on this registered ECC kit?

PC3-12800 sets the data rate at 1600 MT/s; actual bandwidth is limited by the 1027GR's memory controller and the number of channels populated.

What physical slot and clearance do these 240-pin RDIMMs need in the 1027GR chassis?

They require standard 240-pin DDR3 DIMM sockets; the modules have no heat spreader, so they fit in the 1027GR's dense DIMM layout without extra height clearance.

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