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Eight green DDR5 UDIMM modules in anti-static tray

A-Tech

A-Tech 128GB (8x16GB) DDR5 4800 ECC UDIMM 1Rx8 CL40 1.1V Server RAM

SKU CH-7S22-Y669D

Eight-module kit provides 128GB of DDR5 ECC unbuffered server memory at 4800MHz with CL40 latency and 1.1V operation

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeUnbuffered

Capacity 128GB (8 x 16GB)

  • ECC protection guards data integrity on critical workloads
  • 128 GB kit spans eight 16 GB modules
  • DDR5 4800 speed raises throughput for demanding tasks
  • Single-rank 1Rx8 layout keeps latency low at CL40
  • Standard 1.1 V operation reduces power draw per module

128GB DDR5 ECC kit for servers

This 128GB kit contains eight 16GB DDR5 4800 ECC UDIMM modules built for server and workstation platforms. Each module is a single-rank 1Rx8 unbuffered DIMM operating at the standard 1.1V. The kit adds error-correcting memory capacity to systems that require ECC unbuffered DDR5.

Thermals and power at 4800 MT/s

Running at the JEDEC 4800 speed and 1.1V, the modules draw minimal power and generate low heat without a heat spreader. The unbuffered design keeps the electrical load light on the memory controller. In typical server workloads the kit operates quietly within standard chassis airflow.

What the ECC UDIMM format changes

The ECC unbuffered design provides single-bit error correction and multi-bit detection for data integrity in critical workloads. Single-rank 1Rx8 organisation allows all eight modules to populate available slots without rank limitations. Compatibility is limited to DDR5 servers and workstations that support ECC UDIMM; desktop and laptop platforms cannot use this kit.

How it compares

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

Price $3,129.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $24.45 per GB
Pricier than about 86% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR5 Server Memory RAM
Model nameA-Tech 16 GB 1Rx8 PC5-4800B-E EC4
Part numberAT16G8D5D4800ES8EC4N11 V
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR5 SDRAM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

How do I install the eight 16 GB DDR5 4800 ECC UDIMM modules in my server, and which step is often done wrong?

Power off the system, open the chassis, and insert each 288‑pin DIMM into the correct channel slot until the ejector clips lock; the step most often missed is following the motherboard manual's channel-population order for all eight modules.

What maintenance or replacement will this 128 GB DDR5 4800 ECC UDIMM kit need over its service life?

No scheduled maintenance is required; if a module fails, replace it with another 1Rx8 DDR5 4800 ECC UDIMM of the same 16 GB capacity and 1.1 V rating to keep error-correcting operation intact.

What limit appears first when this DDR5 4800 CL40 1.1 V ECC UDIMM kit runs under sustained heavy workloads?

The CL40 latency at 4800 MT/s sets the throughput ceiling; sustained loads will hit that timing boundary before voltage or thermal limits become a factor.

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