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Green circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 8GB DDR4 2666MHz ECC UDIMM CL19 1Rx8 288-Pin Server Memory

SKU CH-M2GH-48AG5

An 8 GB DDR4 2666 MHz ECC UDIMM module with CL19 latency, 1.20 V operation and Supermicro certification

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • ECC protection prevents data corruption with single-rank 1Rx8 design
  • Supermicro certified MEM-DR480L-HL01-EU26 ensures server compatibility
  • 2666 MHz DDR4 speed delivers responsive performance under load
  • 20 V standard voltage reduces power draw and heat
  • 288-pin UDIMM form factor fits compatible server motherboards

Certified Supermicro DDR4 ECC UDIMM

This 8GB DDR4 2666MHz module carries Supermicro certification for server platforms requiring ECC unbuffered memory. It uses a single-rank 1Rx8 Hynix chipset at 1.20V and standard CL19 latency. The 288-pin UDIMM form factor fits compatible server boards without registration buffering.

DDR4 2666 speed and ECC unbuffered limits

The PC4-21300 rating caps bandwidth at the DDR4 2666 data rate, so workloads needing higher throughput will not benefit from faster modules unless the platform also supports them. ECC corrects single-bit errors but adds no extra capacity, and unbuffered topology restricts the total number of modules the memory controller can drive compared with registered DIMMs.

Straightforward UDIMM installation

Insert the 288-pin stick into a compatible DDR4 UDIMM slot until the retention clips lock; no tools or firmware steps are required. The most common issue is mixing this unbuffered ECC module with registered or non-ECC memory, which prevents the system from posting. Always confirm the motherboard supports 1Rx8 unbuffered ECC before adding the module.

How it compares

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

Price $95.99
Cheaper than about 71% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $12.00 per GB
Pricier than about 72% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameSuperMicro
Product lineSupermicro Certified
Model nameMEM-DR480L-HL01-EU26
Total capacity8 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Power
Rated voltage1.2 V

Questions about this item

Should I pick the single 8GB stick or add a second one for dual-channel?

Each module is 8GB and single-rank 1Rx8; adding a second identical stick enables dual-channel bandwidth on boards that support it.

What does the 2666MHz rating deliver in actual use?

The module runs at DDR4 2666 (PC4-21300) with CL19 latency at 1.20V, giving standard server throughput for compatible platforms.

Is the 288-pin ECC UDIMM interface limited by any platform cap?

It fits standard DDR4 288-pin unbuffered ECC slots; maximum speed and capacity depend on the motherboard and CPU memory controller.

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