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Green 288-pin DDR4 DIMM module with black Micron chips, no heat spreader

A-Tech

A-Tech Supermicro Certified 4GB DDR4 2133MHz CL15 1.2V 288-Pin Desktop RAM

SKU CH-FVVM-KD52C

A 4GB DDR4 2133MHz CL15 unbuffered DIMM for desktop upgrades, validated for Supermicro systems

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMicron Chipset
  • CAS latencyCL15
  • Tested speed2133
  • Rated voltage1.2 V
  • Boosts system responsiveness with 4GB DDR4 capacity
  • Runs at 2133MHz CL15 for fast data access
  • Operates at 1.2V standard DDR4 voltage
  • 288-pin DIMM fits desktop motherboards
  • Supermicro certified with Micron chipset for reliability

Supermicro Certified DDR4 Module

This 4GB DDR4 module carries Supermicro certification under part number MEM-DR440L-CL01-UN21 and uses Micron chips. It is built for desktop systems that require non-ECC unbuffered memory at the standard 1.2V operating voltage. The single 288-pin DIMM targets users upgrading or repairing compatible Supermicro platforms.

Sustained Load Behaviour

Rated at 2133MHz with CL15 latency, the module maintains its JEDEC standard timing without relying on overclock profiles. Because it runs at the default 1.2V, thermal output stays predictable during extended workloads such as virtualization or compilation tasks. No heat spreader is fitted, so airflow in the chassis determines long-term temperature stability.

Installation Notes

The 288-pin DIMM keys into any standard DDR4 desktop slot; alignment notches prevent backward insertion. Common issues arise when mixing this stick with modules of different rank, speed or voltage, which can prevent the system from posting. Verify the motherboard qualified-vendor list for the exact MEM-DR440L-CL01-UN21 part number before installing.

How it compares

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

Price $42.99
Cheaper than about 70% 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 $10.75 per GB
Pricier than about 70% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameSuperMicro
Product lineSupermicro Certified
Model nameMEM-DR440L-CL01-UN21
Total capacity4 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMicron Chipset
Memory
CAS latencyCL15
Tested speed2133
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forCompatible Supermicro Systems

Questions about this item

How much heat and power does the 1.20V DDR4 2133MHz module produce when running continuously?

The module operates at the standard 1.20V DDR4 voltage, keeping power draw low during all-day workloads.

What must my motherboard provide for this 288-pin DIMM to function?

A desktop board with a DDR4 DIMM slot that accepts 2133MHz unbuffered non-ECC memory at 1.20V.

Will this CL15 4GB stick work alongside older DDR4 modules I already have installed?

It will run at the lowest common speed and latency; mixing capacities or timings is supported but may limit performance.

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