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Eight green DDR3 ECC registered DIMMs in anti-static bags

OWC

OWC 128GB (8x16GB) DDR3 1866 PC3-14900 CL13 2Rx4 240-pin 1.5V ECC Registered RDIMM server RAM

SKU CH-XG2J-0DXP2

Eight 16 GB DDR3 1866 ECC registered RDIMMs add 128 GB of error-correcting memory to compatible servers and workstations

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR3 1866 (PC3 14900)
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (8 x 16GB)

Rank 2Rx4

  • ECC protection guards data integrity in critical workloads
  • 128 GB across eight 16 GB modules expands server capacity
  • DDR3 1866 CL13 at 1.5 V delivers reliable throughput
  • JEDEC and RoHS compliance ensures warranty-safe upgrades
  • Registered 2Rx4 240-pin RDIMM fits select workstations and servers

ECC Registered Server Memory Kit

This 128GB kit contains eight 16GB DDR3 1866 modules built to JEDEC PC3-14900 CL13 specifications. Each 240-pin RDIMM operates at 1.5V with ECC and registered buffering for data integrity in multi-socket platforms.

Thermal and Power Profile

DDR3 RDIMMs at 1.5V draw modest power and run cool enough for dense server chassis with standard airflow. No heat spreaders are fitted, so case ventilation handles the thermal load without extra fan noise.

2Rx4 Registered ECC Constraint

The modules use a 2Rx4 organisation with registered ECC, so they only work in workstation, server, NAS or router platforms that explicitly support registered memory. Standard desktop boards and unbuffered DIMM slots will not accept this kit.

How it compares

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

Price $349.99
Pricier than about 63% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $2.73 per GB
Cheaper than about 91% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number1R8D32R4128K
Total capacity128 GB (8 × 16 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1866 (PC3 14900)
Memory
CAS latencyCL13
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

How do I install the 8x16GB DDR3 1866 RDIMM kit in a dual-channel server, and what step is often missed?

Populate matched DIMM pairs across the two channels following the motherboard's slot-colour guide; the step often missed is seating every module until both ejector clips click, otherwise the registered buffer stays offline.

What maintenance or replacement will the 128GB ECC registered kit need later?

No routine maintenance is required; if a module fails the ECC scrub logs will flag the specific 16GB stick, and only that stick needs swapping because the kit is not soldered.

What limit appears first when the 2Rx4 1.5V RDIMMs run sustained workloads?

The 1.5V supply and registered buffer latency (CL13) cap sustained throughput before thermal throttling, since the modules have no heat spreaders.

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