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Green circuit board with black memory chips and gold contacts

SK hynix

SK hynix HMT41GU7AFR8A-PB 8GB DDR3 1600 ECC UDIMM 1.35V

SKU CH-1MGZ-N3D45

8GB DDR3 1600 ECC UDIMM at 1.35V with CL11 latency for server memory upgrades

  • Capacity8GB
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes
  • ECC protection guards data integrity in server workloads
  • Low 1.35 V operation reduces power draw and heat
  • DDR3 1600 MHz speed delivers 12 800 MT/s bandwidth
  • Dual-rank 2Rx8 layout maximises density per slot
  • 240-pin UDIMM form factor fits standard server boards

Server-grade DDR3 ECC module

This 8 GB DDR3L UDIMM runs at 1600 MHz with CL11 latency and 1.35 V operation. It is built for server platforms that require ECC error correction and unbuffered signalling. The dual-rank 2Rx8 organisation fits standard 240-pin DIMM slots. It will not function in consumer desktop or laptop systems.

Thermals and power in normal use

Low-voltage 1.35 V operation reduces power draw compared to standard 1.5 V DDR3 modules. ECC logic adds minimal overhead during typical server workloads. Unbuffered design avoids the extra register power of registered DIMMs. Individual testing confirms stable operation at rated specifications.

Upgrade path and when it matters

This module replaces failed or lower-capacity DDR3L ECC UDIMMs in compatible server boards. The jump is worthwhile when expanding memory capacity for virtualisation or database workloads that benefit from error correction. Systems requiring registered or load-reduced DIMMs cannot use this part. Buyers needing higher densities per slot or consumer-platform compatibility should look elsewhere.

Points forts

  • ECC protection guards data integrity in server workloads
  • Low 1.35 V operation reduces power draw and heat
  • DDR3 1600 MHz speed delivers 12 800 MT/s bandwidth
  • Dual-rank 2Rx8 layout maximises density per slot
  • 240-pin UDIMM form factor fits standard server boards

Caractéristiques

BrandHynix
ModelHMT41GU7AFR8A-PB
Capacity8GB
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes

Questions sur cet article

How do I install this 240-pin DDR3L UDIMM and which step do people miss?

Align the notch with the motherboard key, press firmly until both retention clips snap shut, then verify the BIOS reports 1600 MT/s at 1.35 V — many forget to enable the low-voltage profile.

What maintenance or replacement will this ECC module need later?

No scheduled maintenance is required; if a correctable error count rises or the module fails POST, replace the stick — ECC cannot repair a failed DRAM chip.

What limit appears first under sustained load with this CL11 1.35 V kit?

The DDR3L voltage ceiling of 1.35 V caps overclocking headroom, so thermal throttling or timing instability will surface before bandwidth saturation.

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