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Eight green DDR4 LRDIMM sticks with black chips and gold contacts

OWC

OWC 1TB (8x128GB) DDR4 2400MHz PC4-19200 CL17 4RX4 ECC LRDIMM 1.2V 288-pin server RAM

SKU CH-RM10-2FK18

Eight 128 GB DDR4-2400 ECC load-reduced DIMMs add 1 TB of registered server memory with CL17 latency at 1.2 V

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 1TB (8 x 128GB)

  • 1TB total capacity from eight 128GB modules
  • DDR4 2400MHz PC4-19200 speed for server workloads
  • ECC load-reduced design corrects errors under heavy load
  • CL17 latency at 1.2V for efficient operation
  • Backward compatible with 2133MHz systems

High-density server memory kit

This OWC kit delivers 1TB of DDR4 capacity across eight 128GB LRDIMM modules. It targets administrators upgrading enterprise servers, workstations or NAS systems that require registered ECC memory with load-reduced architecture.

DDR4-2400 bandwidth ceiling

The modules operate at PC4-19200 speed with CL17 latency and 1.2V voltage. Backward compatibility extends to 2133MHz systems, but the load-reduced design cannot be mixed with unbuffered DIMMs and will not function in standard desktop platforms.

Tool-free DIMM installation

Each 288-pin module seats vertically in registered DIMM slots without cables or drivers. The most common issue is attempting to populate consumer motherboards that lack LRDIMM support, which prevents the system from posting.

How it compares

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

Price $5,963.99
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 $5.96 per GB
Cheaper than about 64% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2L4D44R41TBK
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeLoad Reduced
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

Should I buy the 1TB kit as eight 128GB modules or look for a different capacity?

The kit is supplied as eight 128GB LRDIMMs totalling 1TB; choose this version when your server or workstation has eight available 288-pin DDR4 slots and supports 4Rx4 load-reduced ECC memory.

What does the 2400MHz PC4-19200 rating deliver in an actual server?

It runs at 2400MHz with CL17 latency at 1.2V, and will also operate at 2133MHz if the platform requires the lower speed.

How does the DDR4 288-pin ECC load-reduced interface limit real-world use?

The 288-pin LRDIMM form factor fits only server, workstation or NAS boards that accept DDR4 load-reduced ECC; it cannot be used in standard desktops or mixed with unbuffered modules.

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