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Green 288-pin DDR4 UDIMM module with black chips

RIMLANCE

RIMLANCE RUD21300S6C4 4GB DDR4 2666 CL19 desktop RAM

SKU CH-5RC1-YA9PT

4GB DDR4 2666MHz CL19 UDIMM desktop memory module running at 1.2V with 288-pin PC4-21300 speed

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Product type288-Pin PC RAM
  • 4GB capacity handles everyday multitasking with a single module
  • 2666MHz DDR4 speed delivers PC4-21300 data transfer rates
  • 2V low-voltage operation reduces system power draw
  • 288-pin UDIMM form factor fits standard desktop DIMM slots
  • CL19 latency and 1Rx16 chip layout provide stable unbuffered performance

4 GB DDR4 module for desktop PCs

The RIMLANCE RUD21300S6C4 is a single 4 GB unbuffered DIMM built for standard desktop motherboards. It targets users who need a basic capacity boost for everyday multitasking and office workloads. The module uses a 1Rx16 chip layout and runs at the JEDEC-standard 1.2 V.

DDR4-2666 CL19 speed ceiling

The stick operates at 2666 MT/s with a CAS latency of 19, matching the PC4-21300 data-rate ceiling defined by the DDR4 specification. Bandwidth and latency are fixed at these JEDEC values, so the module cannot exceed the standard 2666 MT/s transfer rate or tighten timings without platform support for manual overclocking.

Simple 288-pin insertion

Installation requires aligning the notch on the 288-pin edge connector with the motherboard slot and pressing until the retention clips click. The low 1.2 V voltage means no extra power cables are involved. The most common issue is a partially seated module that prevents the system from posting, which is resolved by re-seating the DIMM firmly.

How it compares

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

Price $26.99
Cheaper than about 81% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $6.75 per GB
Typical for this category: the median of 3,251 items is $6.75 per GB.

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Specifications

Product
Brand nameRIMLANCE
Model nameRUD21300S6C4
Total capacity4 GB
Product type288-Pin PC RAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered

Questions about this item

Is the single 4GB module the only capacity option for this model?

Yes, this specific RUD21300S6C4 module is supplied as a single 4GB stick with a 1Rx16 chip layout.

What does the 2666MHz rating mean for actual data throughput?

The module runs at DDR4 2666, delivering a PC4-21300 peak transfer rate of 21300 MB/s in a compatible system.

Does the 288-pin DDR4 interface limit the speed on older chipsets?

The 288-pin DDR4 UDIMM fits any desktop DDR4 slot; the memory controller will negotiate the highest common speed up to 2666MHz.

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