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Two green DDR3 ECC RDIMM modules with gold contacts

OWC

OWC 32GB (2x16GB) DDR3 1333 ECC RDIMM memory upgrade

SKU CH-DM6W-MQARJ

32 GB dual-channel DDR3-1333 ECC registered kit for Lenovo System x3550 M3, x3620 M3, x3630 M3, x3650 M3 and x3850 X5 servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB (2 x 16GB)

  • ECC registered design protects data integrity in Lenovo System x servers
  • 32 GB kit (2 × 16 GB) expands capacity for virtualization workloads
  • DDR3 1333 CL9 matches OEM speed for drop-in compatibility
  • 5 V 240-pin RDIMM fits x3550 M3, x3620 M3, x3630 M3, x3650 M3 and x3850 X5
  • Replaces Lenovo part numbers 03X3813 and 0A89413 for validated upgrade path

Lenovo Server ECC RDIMM Kit

This 32GB kit contains two 16GB DDR3 1333 ECC registered DIMMs built for Lenovo System x3550 M3, x3620 M3, x3630 M3, x3650 M3 and x3850 X5 servers. It replaces Lenovo part numbers 03X3813 and 0A89413 and runs at 1.5V with CL9 latency.

Registered ECC Compatibility Constraint

Registered ECC modules will not work in standard desktop boards and cannot be mixed with unbuffered memory. The 240-pin DDR3 interface limits use to platforms that explicitly support registered error-correcting DIMMs at this speed and voltage.

2Rx4 Rank Determines Slot Population

Each 16GB module uses a dual-rank 2Rx4 organisation, which affects how many DIMMs the memory controller can address per channel. Buyers needing single-rank modules or higher capacities per slot should verify the server's qualified vendor list before ordering.

How it compares

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

Price $97.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $3.06 per GB
Cheaper than about 89% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R3D32R4032P
Total capacity32 GB (2 × 16 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
Lenovo System x3620 M3
Lenovo System x3630 M3
Lenovo System x3650 M3
Lenovo System x3850 X5

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the 32GB kit with two 16GB modules or look for a different capacity?

This kit provides 32GB using two 16GB DDR3 1333 ECC registered DIMMs. It is built for the Lenovo System x3550 M3, x3620 M3, x3630 M3, x3650 M3 and x3850 X5. Other capacities would require a different part number.

What does the 1333 speed rating actually deliver inside a compatible server?

The modules run at DDR3 1333 (PC3-10600) with CL9 latency at 1.5V. In the listed Lenovo systems they operate at the platform's supported DDR3 1333 rate, providing error-correcting registered memory for stable server workloads.

How does the 240-pin DDR3 ECC registered interface limit what I can install alongside it?

These 240-pin DDR3 ECC registered DIMMs must not be mixed with unbuffered memory. They only fit servers that support registered DDR3 ECC, such as the listed Lenovo System x models, and require matching registered modules for proper operation.

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