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Two green DDR4 LRDIMM sticks with gold contacts and black chips

RIMLANCE

RIMLANCE RLR21300Q4C2K128 128GB (2x64GB) DDR4 2666 PC4-21300 LRDIMM 4Rx4 server RAM

SKU CH-CS64-MJA7Q

A 128 GB DDR4 server memory kit with two 64 GB LRDIMM modules at 2666 MHz

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • Buffer typeRegistered
  • Memory rank4Rx4
  • Product type288-Pin DDR4 SDRAM
  • 128 GB total capacity from two 64 GB modules
  • DDR4 2666 MHz speed with PC4-21300 bandwidth
  • Load-reduced DIMM design reduces electrical load on the memory bus
  • 4Rx4 rank organisation increases density per module
  • 2 V operation lowers power draw per gigabyte

Server Memory Kit

This RIMLANCE kit delivers 128GB of DDR4 server memory across two 64GB LRDIMM modules. It operates at 2666MHz with a PC4-21300 data transfer rate. The registered, ECC design uses a 4Rx4 rank configuration and major brand chipsets. It is built for multi-socket servers and workstations that require high-density, load-reduced DIMMs.

Target Use Cases

This memory suits administrators upgrading or populating servers that accept 288-pin DDR4 LRDIMMs with a 4Rx4 organisation. It fits virtualization hosts, database nodes, and other memory-intensive workloads needing registered ECC stability. Buyers whose platforms only support standard RDIMMs or lower-rank configurations should look at something else. Systems limited to lower maximum module densities cannot use these 64GB sticks.

Deciding Specification

The 4Rx4 load-reduced DIMM organisation is the single specification that determines compatibility. Your motherboard and CPU memory controller must explicitly support LRDIMM technology and this rank structure. Without that support the modules will not function, regardless of speed or capacity matches. Verify the platform qualified-vendor list before purchase.

How it compares

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

Price $448.99
Pricier than about 69% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $3.51 per GB
Cheaper than about 85% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameRIMLANCE
Model nameRLR21300Q4C2K128
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4

Questions about this item

What data rate does the DDR4 2666 PC4-21300 interface cap at in practice?

The modules run at 2666 MHz, giving a peak transfer rate of PC4-21300.

What physical slot and clearance does a 288-pin LRDIMM kit need?

Each 64 GB module uses a standard 288-pin DDR4 slot; ensure the server chassis has enough vertical clearance for load-reduced DIMM height.

How are the two 64 GB sticks installed, and which step is often missed?

Populate matched slots per the motherboard manual, then verify the BIOS recognises 128 GB at 2666 MHz and enables ECC.

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