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Two green DDR3 ECC registered DIMMs, 240-pin, no heat spreaders

OWC

OWC 64GB (2x32GB) DDR3 1600 ECC Registered RDIMM Memory Upgrade Kit

SKU CH-AVD8-56E47

64 GB DDR3-1600 ECC registered kit for Lenovo ThinkStation C30, D30 and S30 workstations

  • Capacity64GB (2 x 32GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 64GB (2 x 32GB)

  • ECC registered design protects data integrity in workstations
  • 64 GB kit (2 × 32 GB modules) expands memory capacity
  • DDR3 1600 CL11 at 1.5 V matches system specifications
  • 240-pin RDIMM form factor fits Lenovo ThinkStation C30 D30 S30
  • JEDEC and RoHS compliant for warranty-safe upgrades

64GB DDR3 ECC RDIMM kit

This 64GB kit contains two 32GB DDR3 1600 PC3-12800 CL11 registered ECC modules built for Lenovo ThinkStation C30, D30 and S30 workstations. The 240-pin DIMMs run at 1.5V with a 4Rx4 organisation and meet JEDEC and RoHS standards. They are designed for server and workstation platforms that require registered memory and will not function in standard desktop systems or alongside unbuffered modules.

Thermals and power in daily use

The modules operate at the standard 1.5V DDR3 voltage without a heat spreader, relying on the workstation's existing airflow for cooling. Registered ECC designs typically draw slightly more power than unbuffered equivalents due to the register circuitry, but the increase remains within the platform's original thermal envelope. No additional fan speed or case modification is required for normal workloads.

What the bundle changes

The kit supplies a matched pair that enables dual-channel operation on supported ThinkStation models, delivering the full 64GB capacity in two slots. JEDEC compliance and OWC's validation process mean the upgrade is recognised by the system BIOS without manual timing adjustments. Because the modules are registered ECC, they cannot be mixed with any unbuffered memory already installed, so buyers needing mixed populations must replace the existing kit entirely.

Highlights

  • ECC registered design protects data integrity in workstations
  • 64 GB kit (2 × 32 GB modules) expands memory capacity
  • DDR3 1600 CL11 at 1.5 V matches system specifications
  • 240-pin RDIMM form factor fits Lenovo ThinkStation C30 D30 S30
  • JEDEC and RoHS compliant for warranty-safe upgrades

Specifications

BrandOWC
Part Number1R6D34R4064P
Capacity64GB (2 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

How do I install these 240-pin DDR3 1600 modules in a Lenovo ThinkStation D30, and what step is often missed?

Power off the workstation, open the chassis, align each module's notch with the slot key, press firmly until both retention clips click, then verify in BIOS that all 64GB are detected at PC3-12800 CL11; the step often missed is confirming the registered ECC type matches the system requirement and not mixing with unbuffered DIMMs.

What maintenance or replacement will this 4Rx4 1.5V registered kit need over time?

No routine maintenance is required for the modules themselves; keep the system's air filters clean so the DIMMs stay within thermal limits, and replace a module only if memory diagnostics report correctable or uncorrectable ECC errors on one of the two 32GB sticks.

What limit appears first when this CL11 64GB kit runs sustained workloads on a ThinkStation C30?

The memory controller's maximum supported capacity and rank-per-channel limit will be reached before the modules' own speed or voltage ratings become a bottleneck, so the system's qualified memory population rules determine the practical ceiling.

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