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Green circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 8GB DDR4 2133MHz ECC Unbuffered UDIMM 2Rx8 CL15 1.20V 288-Pin Server RAM

SKU CH-Q0QS-QCXM4

An 8 GB DDR4 ECC UDIMM running at 2133 MHz with CL15 latency, 1.20 V operation and dual-rank Samsung chips, certified for Supermicro servers

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetSamsung Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Supermicro certified for guaranteed server compatibility
  • Samsung DDR4 chips deliver dependable 2133 MHz operation
  • ECC unbuffered design protects data integrity in critical workloads
  • Dual-rank 2Rx8 organisation maximises memory density per slot
  • Standard 1.20 V DDR4 voltage ensures efficient power use

8GB DDR4 2133MHz ECC UDIMM for servers

This 8GB module is built for Supermicro platforms that require ECC unbuffered memory. It runs at DDR4 2133MHz with a CL15 latency and 1.20V operation. The dual-rank 2Rx8 organisation uses Samsung chips and fits standard 288-pin UDIMM slots. It suits administrators expanding capacity in compatible rack or tower servers.

Standard voltage and unbuffered design

Operating at the DDR4 standard 1.20V, the module draws typical power for its speed grade without elevated voltage. The unbuffered topology keeps the signal path direct, which helps maintain low latency in supported systems. No active cooling is present on the DIMM itself, so thermal performance depends on chassis airflow across the memory slots.

Replaces non-ECC or lower-capacity UDIMMs

This kit upgrades systems currently running non-ECC memory where data integrity is now required, or adds density beyond 4GB modules. The jump is worth it when the platform validates the MEM-DR480L-SL02-EU21 part number and the workload benefits from ECC protection. It does not serve boards limited to registered DIMMs or speeds above 2133MHz.

How it compares

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

Price $102.99
Cheaper than about 68% 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 $12.87 per GB
Pricier than about 73% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSuperMicro
Product lineSupermicro Certified
Model nameMEM-DR480L-SL02-EU21
Total capacity8 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

How do I install this 288-pin DDR4 UDIMM and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify the system POSTs and reports the full 8 GB at 2133 MHz.

What maintenance or replacement will this Samsung M391A1G43EB1-CPB module need over time?

No routine maintenance is required; if errors appear, run a memory diagnostic and replace the stick if failures persist.

What limit appears first when this CL15 1.20 V ECC unbuffered DIMM runs sustained workloads?

The JEDEC 2133 MT/s data rate and CL15 latency set the throughput ceiling before voltage or thermal throttling becomes a factor.

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