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Four green DDR3 ECC registered DIMMs with gold contacts

OWC

OWC 128GB (4x32GB) DDR3 1600 ECC Registered RDIMM memory upgrade

SKU CH-JR2Z-NKR7J

ECC registered DDR3 kit adds 128 GB across four 32 GB modules at 1600 MHz CL11 for Lenovo ThinkStation C30, D30 and S30 workstations

  • Capacity128GB (4 x 32GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • 128 GB kit (4 × 32 GB modules) expands workstation memory capacity
  • DDR3 1600 PC3-12800 CL11 speed matches supported platform specs
  • ECC registered design detects and corrects data errors for reliability
  • 5 V JEDEC-standard voltage ensures stable operation
  • Validated for Lenovo ThinkStation C30, D30 and S30 systems

Target workstation upgrade

This kit delivers 128 GB of DDR3 1600 registered ECC memory across four 32 GB modules. It is built for Lenovo ThinkStation C30, D30 and S30 workstations that require registered DIMMs. Standard desktop boards cannot use this memory.

Registered ECC constraints

Registered modules add a clock cycle of buffering and must not be mixed with unbuffered DIMMs. The platform must support ECC registered DDR3 at 1.5 V; consumer chipsets and laptop SO-DIMM slots will not accept these 240-pin sticks.

Installation notes

Align the notch on each 240-pin module with the slot key and press until the latches click. Common issues include seating modules in the wrong channel order for the specific ThinkStation model or leaving a latch partially open, which prevents POST.

Highlights

  • 128 GB kit (4 × 32 GB modules) expands workstation memory capacity
  • DDR3 1600 PC3-12800 CL11 speed matches supported platform specs
  • ECC registered design detects and corrects data errors for reliability
  • 5 V JEDEC-standard voltage ensures stable operation
  • Validated for Lenovo ThinkStation C30, D30 and S30 systems

Specifications

BrandOWC
Part Number1R6D34R4128S
Capacity128GB (4 x 32GB)
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkStation C30
Lenovo ThinkStation D30
Lenovo ThinkStation S30

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Questions about this item

Should I choose this 128GB kit or a smaller capacity for my ThinkStation?

This kit provides 128GB total using four 32GB modules. It fills all four slots on a C30, D30 or S30, so no additional modules can be added later. If you need less memory now but want room to expand, a kit with smaller modules leaves empty slots.

What does the 1600 speed mean once the modules are installed?

The memory runs at DDR3 1600 (PC3-12800) with CL11 latency at 1.5V. Actual throughput depends on the specific ThinkStation model and how many channels the CPU populates.

Is the 240-pin registered ECC interface compatible with standard desktop boards?

No. The 240-pin RDIMM uses registered ECC signalling required by ThinkStation C30, D30 and S30 workstations. It will not work in consumer desktop motherboards that expect unbuffered non-ECC DIMMs.

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