We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR3L RDIMM modules with gold contacts and black chips, no heat spreaders

OWC

OWC 32GB (4x8GB) DDR3L 1600 CL11 ECC Registered RDIMM for Lenovo x3550 M3 R2

SKU CH-W3CM-JDA4C

32GB kit of four 8GB DDR3L 1600 CL11 ECC registered RDIMMs for Lenovo x3550 M3 R2 servers

  • Capacity32GB (4 x 8GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 32GB (4 x 8GB)

  • ECC registered design protects server data integrity
  • DDR3L 1600 CL11 matches Lenovo x3550 M3 R2 specs
  • 35 V low-voltage modules reduce power draw
  • Four 8 GB DIMMs deliver 32 GB total capacity
  • Replaces Lenovo part numbers 00D5035 00D5036 46W0700 46W0771

System-specific ECC RDIMM kit

This OWC kit delivers 32 GB across four 8 GB DDR3L 1600 CL11 registered modules built for the Lenovo System x3550 M3 R2. Each 240-pin DIMM operates at 1.35 V with 1Rx4 organisation and on-die ECC for data integrity.

Suited for x3550 M3 R2 upgrades

The modules target administrators refreshing or expanding memory in that specific server platform. They will not work in standard desktop boards, consumer laptops or any system that requires unbuffered non-ECC memory.

Registered ECC with 1Rx4 rank

The registered buffer and single-rank x4 organisation determine electrical loading on the memory bus; only platforms qualified for registered ECC RDIMMs at DDR3L 1600 can accept this kit.

Highlights

  • ECC registered design protects server data integrity
  • DDR3L 1600 CL11 matches Lenovo x3550 M3 R2 specs
  • 35 V low-voltage modules reduce power draw
  • Four 8 GB DIMMs deliver 32 GB total capacity
  • Replaces Lenovo part numbers 00D5035 00D5036 46W0700 46W0771

Specifications

BrandOWC
Part Number1R6T31R4032S
Capacity32GB (4 x 8GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemLenovo System x3550 M3 R2

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What does the CL11 latency mean when the kit is installed in a Lenovo x3550 M3 R2?

CL11 is the CAS latency rating at DDR3L 1600 speed. In the x3550 M3 R2 the memory controller will run the modules at their rated 1600 MT/s with 11-cycle column access delay, giving the lowest latency this platform supports for registered ECC DIMMs.

Which memory standard and voltage does the 240-pin RDIMM use, and what speed ceiling does that impose?

The modules follow the JEDEC DDR3L PC3L-12800 standard at 1.35 V. That specification caps the data rate at 1600 MT/s, so the kit cannot run faster than 1600 MT/s in any system.

Will the 240-pin registered DIMMs physically fit the memory slots in a Lenovo System x3550 M3 R2?

Yes. The kit uses the standard 240-pin DDR3L RDIMM form factor that matches the x3550 M3 R2 DIMM sockets exactly, and the low-profile design clears the server's CPU heatsinks without interference.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.