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Green 240-pin DDR3 ECC registered RDIMM module with black memory chips

OWC

OWC 16GB DDR3 1333 ECC Registered RDIMM 2Rx4 1.5V 240-pin memory upgrade

SKU CH-RGHX-D2FSP

16GB DDR3 1333 ECC Registered RDIMM for Lenovo System x3950 X5 servers

  • Capacity16GB
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Voltage1.5V
  • ECCYes

Capacity 16GB

  • ECC registered design prevents data corruption in servers
  • 16GB capacity extends Lenovo x3950 X5 server life
  • DDR3 1333 CL9 speed matches system specifications
  • 5V 240-pin RDIMM fits workstation memory slots
  • Replaces Lenovo part numbers 03X3813 and 0A89413

Targeted Server Upgrade

This 16GB DDR3 ECC Registered RDIMM is built for the Lenovo System x3950 X5. It serves administrators who need to expand memory capacity in that specific server platform. The module will not work in standard desktop computers and must not be mixed with unbuffered memory.

Build Integration

The single 240-pin DIMM plugs directly into an available registered slot on the x3950 X5 motherboard. It operates at 1.5V and uses a 2Rx4 organisation, freeing additional slots for further expansion. Compatibility is limited to systems that accept DDR3 PC3-10600 registered ECC modules.

Sustained Load Behaviour

ECC circuitry detects and corrects single-bit errors during continuous operation, helping to maintain data integrity under prolonged workloads. Registered buffering reduces electrical load on the memory controller, supporting stable performance over extended periods in server and workstation environments.

Highlights

  • ECC registered design prevents data corruption in servers
  • 16GB capacity extends Lenovo x3950 X5 server life
  • DDR3 1333 CL9 speed matches system specifications
  • 5V 240-pin RDIMM fits workstation memory slots
  • Replaces Lenovo part numbers 03X3813 and 0A89413

Specifications

BrandOWC
Part Number1R3D32R416GB
Capacity16GB
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo System x3950 X5

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Questions about this item

Will the registered ECC design and 1.5 V operation keep the module stable under continuous server workloads?

The module is an ECC registered DDR3 DIMM running at 1.5 V, built to JEDEC PC3-10600 CL9 specifications for sustained workstation and server use.

Does the lack of a heat spreader cause higher temperatures when the DIMM runs all day in a Lenovo System x3950 X5?

No heat spreader is fitted; the module relies on the server's forced-air cooling, which is the standard thermal path for registered DDR3 DIMMs in this platform.

My Lenovo System x3950 X5 currently uses unbuffered DIMMs — can I add this registered module alongside them?

Registered ECC memory cannot be mixed with unbuffered memory; the system must be populated exclusively with registered modules for correct operation.

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