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Eight green DDR4 RDIMM modules in anti-static tray

OWC

OWC 1TB (8x128GB) DDR4 3200MHz CL22 4Rx4 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-S45T-FPCY6

Eight 128 GB DDR4-3200 ECC registered RDIMMs deliver 1 TB of server memory at CL22 and 1.2 V

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 1TB (8 x 128GB)

Show 4 more

Rank 4Rx4

  • 1TB total capacity for dense server workloads
  • 8 modules of 128GB each populate all channels
  • DDR4 3200 speed with CL22 latency
  • ECC registered design corrects errors in critical data
  • 2V operation meets JEDEC standard for efficiency

OWC 1TB DDR4 3200 Server Kit

This kit delivers 1TB of ECC Registered DDR4 memory across eight 128GB modules. It targets administrators upgrading compatible workstations or servers that require registered DIMMs. The modules operate at 3200MHz with CL22 latency at 1.2V. Standard desktop systems cannot use this memory type.

Sustained load behaviour

Registered buffering and ECC correction maintain data integrity during continuous operation in multi-socket environments. The 4Rx4 organisation supports high-density configurations without signal degradation. JEDEC-compliant timing ensures stability across extended workloads typical of virtualisation and database tasks.

Installation notes

Install modules in matched pairs per the dual-channel kit design to enable full bandwidth. Mixing with unbuffered DIMMs will prevent boot. Verify the platform supports 4Rx4 registered modules and 128GB per slot before purchase. No heat spreaders are fitted, so chassis airflow must be adequate.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $5,826.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 92% of the 6,064 comparable items (median 32 GB).
Price per GB $5.83 per GB
Cheaper than about 65% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D44R41TBK
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Will eight 128 GB registered DDR4 3200 modules running continuously raise chassis temperatures noticeably?

Each stick runs at the standard 1.2 V with no heat spreader, so thermal output matches typical server DDR4; adequate case airflow is the main factor.

What must the host system provide to use this 1 TB kit?

A server or workstation motherboard with eight 288-pin DDR4 slots that support registered ECC 4Rx4 modules at 3200 MT/s and a CPU memory controller qualified for 1 TB total capacity.

Can this kit share channels with existing 4Rx4 registered ECC DDR4 3200 DIMMs already installed?

Yes, provided the platform allows mixed-capacity 4Rx4 registered populations and the BIOS can train all ranks at the common 3200 MT/s speed.

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