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Two green DDR3 ECC registered RDIMM sticks with gold contacts and black chips

OWC

OWC 16GB (2x8GB) DDR3 1333 ECC Registered RDIMM Kit for Lenovo x3550 M3 R4 x3650 M2

SKU CH-QH3S-G6K5H

16 GB DDR3 1333 ECC registered RDIMM kit for Lenovo x3550 M3 R4 and x3650 M2 servers

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 16GB (2 x 8GB)

  • ECC Registered design protects server data integrity
  • 16 GB kit (2×8 GB) expands Lenovo x3550 M3 R4 and x3650 M2 capacity
  • DDR3 1333 CL9 at 1.5 V matches system specifications
  • 240-pin 2Rx4 registered modules install directly in supported slots
  • Replaces Lenovo part numbers including 0A89412 and 46C7449

Server ECC RDIMM kit

This OWC kit supplies 16 GB of DDR3 1333 ECC registered memory in a matched pair of 8 GB modules. It is built for Lenovo System x3550 M3 R4 and x3650 M2 servers that require 240-pin RDIMMs with 2Rx4 organisation. The modules run at 1.5 V with CL9 latency and include on-die error correction for data integrity.

Replaces Lenovo service parts

The kit replaces Lenovo part numbers 0A89412, 46C0542, 46C7449, 46U3419, 49Y1436, 49Y1446, 57Y4427, 67Y0017 and 67Y1464. The upgrade is worthwhile when the existing configuration uses smaller RDIMMs or unbuffered DIMMs that cannot be mixed with registered modules. It will not work in standard desktop platforms or in systems that only accept unbuffered memory.

Fits 240-pin registered slots

Installation requires available 240-pin DDR3 RDIMM slots that support registered ECC modules at 1333 MT/s. The kit frees the builder from sourcing individual sticks and guarantees matched capacity, speed and rank across both modules. It is not compatible with consumer motherboards, laptop SO-DIMM slots or any platform that does not explicitly support registered ECC DDR3.

How it compares

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

Price $40.99
Cheaper than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.56 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 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 number1R3D32R4016P
Total capacity16 GB (2 × 8 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo System x3550 M3 R4
Lenovo System x3650 M2

Other versions of this model

5 more in the same range

Questions about this item

Will the 240-pin DDR3 RDIMM modules fit the memory slots in my Lenovo x3550 M3 R4?

Yes, the kit uses the standard 240-pin DDR3 registered DIMM form factor required by the x3550 M3 R4 and x3650 M2 servers.

Do I need to install the two 8 GB sticks as a matched pair, or can I add just one?

Install both modules together as a matched pair; the 2Rx4 registered ECC design is validated for dual-channel operation in these systems.

How long before the ECC registered DIMMs typically need replacement in a server running 24/7?

DDR3 registered ECC modules have no fixed replacement interval; they remain in service until a memory error is logged or a capacity upgrade is required.

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