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Eight green DDR4 LRDIMM sticks with gold contacts, no heat spreaders

OWC

OWC 1TB (8x128GB) DDR4 2933 PC4-23400 CL21 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM memory upgrade

SKU CH-HZVN-3HNY1

Eight 128 GB DDR4-2933 ECC load-reduced DIMMs for Supermicro H12SST-PS servers

  • Capacity1TB (8 x 128GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 1TB (8 x 128GB)

  • 1 TB server memory upgrade in an 8 × 128 GB kit
  • ECC load-reduced DIMMs protect data integrity in critical workloads
  • JEDEC-standard DDR4-2933 CL21 at 1.2 V for broad compatibility
  • Backward compatible with 2133, 2400 and 2666 MHz systems
  • Validated for Supermicro H12SST-PS motherboards

Server Memory Kit

This OWC kit provides 1TB of DDR4 ECC Load Reduced memory across eight 128GB modules. It is built for the Supermicro H12SST-PS motherboard in server and workstation roles. The 288-pin LRDIMM form factor and 4Rx4 organisation are intended for high-density platforms that support load-reduced technology. It will not work in standard desktops or systems that require unbuffered or registered DIMMs.

Speed and Compatibility Limits

The modules run at DDR4 2933 (PC4-23400) with a CAS latency of CL21 at 1.2V. They are backward compatible with 2133, 2400 and 2666MHz bus speeds when the platform dictates a lower rate. JEDEC compliance ensures the kit meets the electrical and timing standards for DDR4 server memory. Mixing these LRDIMMs with unbuffered or registered ECC modules is not supported.

Build and Daily Use

Each module operates without a heat spreader, relying on chassis airflow for cooling. The 288-pin edge connector seats in standard DDR4 LRDIMM slots on the target board. ECC and load-reduction circuitry help maintain data integrity and signal quality in densely populated configurations. The kit is designed as a warranty-safe upgrade for the specified Supermicro platform.

Puntos fuertes

  • 1 TB server memory upgrade in an 8 × 128 GB kit
  • ECC load-reduced DIMMs protect data integrity in critical workloads
  • JEDEC-standard DDR4-2933 CL21 at 1.2 V for broad compatibility
  • Backward compatible with 2133, 2400 and 2666 MHz systems
  • Validated for Supermicro H12SST-PS motherboards

Especificaciones

BrandOWC
Part Number2L9D44R41TBK
Capacity1TB (8 x 128GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard H12SST-PS

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Preguntas sobre este artículo

Should I buy the 1TB kit or individual 128GB modules?

The 1TB kit contains eight matched 128GB LRDIMMs tested together for the Supermicro H12SST-PS. Buying the kit ensures identical rank, timing and voltage across all slots, which is required for stable server operation.

What does DDR4 2933 CL21 deliver in a live server?

The modules run at 2933 MT/s with a CAS latency of 21 cycles at 1.2 V. In the H12SST-PS they provide 1 TB of ECC load-reduced capacity, allowing the memory controller to address all ranks with reduced electrical load for reliable throughput.

How does the PC4-23400 LRDIMM interface limit real-world speed?

The PC4-23400 rating caps the data rate at 2933 MT/s. The H12SST-PS memory controller will also accept 2133, 2400 and 2666 MT/s JEDEC speeds, but cannot exceed the 2933 MT/s ceiling of these LRDIMMs.

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