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Four green DDR3L ECC registered DIMMs in static bags

OWC

OWC 32GB (4x8GB) DDR3L 1600 CL11 ECC RDIMM 1.35V memory upgrade

SKU CH-X4B8-WZE6B

32 GB DDR3L ECC registered RDIMM kit for Lenovo ThinkServer RD540, RD630, RD640, TD330 and TD340

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 32GB (4 x 8GB)

  • ECC registered design protects data integrity in servers
  • 32GB kit (4×8GB) expands memory capacity for Lenovo ThinkServer
  • DDR3L 1600 CL11 at 1.35V lowers power draw vs standard DDR3
  • 240-pin RDIMM form factor fits RD540 RD630 RD640 TD330 TD340
  • Replaces Lenovo part numbers 00D5035 00D5036 46W0700 46W0771

Target Server Upgrade

This kit provides 32GB of DDR3L ECC registered memory in four 8GB modules built for Lenovo ThinkServer RD540, RD630, RD640, TD330 and TD340 systems. It is designed for server and workstation workloads that require error correction and registered buffering. Standard desktop computers cannot use this memory type.

Compatibility Check

Verify that your ThinkServer model appears in the supported list before ordering. The modules are 240-pin DDR3L RDIMMs operating at 1.35V with CL11 latency and 1Rx4 organisation. They must not be mixed with unbuffered DIMMs and the platform must accept registered ECC memory.

Build and Connectors

Each module uses a standard 240-pin DDR3L form factor without a heat spreader, allowing dense slot population in compatible chassis. The registered design adds a buffer that reduces electrical load on the memory controller during heavy multitasking. JEDEC and RoHS compliance confirms baseline manufacturing quality.

How it compares

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

Price $82.99
Cheaper than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.59 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6T31R4032S
Total capacity32 GB (4 × 8 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsLenovo ThinkServer RD540
Lenovo ThinkServer RD630
Lenovo ThinkServer RD640
Lenovo ThinkServer TD330
Lenovo ThinkServer TD340

Other versions of this model

5 more in the same range

Questions about this item

Does the kit include four 8 GB modules or do I need to buy extra sticks?

The kit contains four 8 GB DDR3L 1600 CL11 ECC registered DIMMs for a total of 32 GB, so no additional modules are required.

Should I choose the 1Rx4 registered version or is there an unbuffered alternative listed?

Only the 1Rx4 ECC registered version is offered; the product notes state it cannot be mixed with unbuffered memory and is intended for the listed ThinkServer models.

What does the PC3L-12800 rating mean for real-world throughput in a ThinkServer RD540?

PC3L-12800 indicates a peak transfer rate of 12 800 MB/s per module at 1600 MHz with CL11 latency, giving the server maximum supported memory bandwidth for DDR3L.

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