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Green circuit board SODIMM module with black memory chips, no heat spreader

OWC

OWC 16GB DDR5 4800 CL40 1Rx8 262-pin 1.1V SODIMM for TerraMaster U12-500 PLUS U4-500 U8-500 PLUS

SKU CH-Z6AM-47JZC

A 16 GB DDR5 4800 SODIMM module with CL40 latency and 1.1 V operation, designed to upgrade compatible TerraMaster NAS systems

  • Capacity16GB
  • Type262-Pin DDR5 Non-ECC SODIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS Latency40
  • Voltage1.1V
  • ECCNo
  • 16 GB DDR5 4800 MHz boosts multitasking speed
  • CL40 latency and 1.1 V keep power draw low
  • 262-pin SODIMM fits TerraMaster U12-500 PLUS U4-500 U8-500 PLUS
  • JEDEC-standard module ensures warranty-safe upgrade
  • Single 1Rx8 rank simplifies installation in compatible NAS

16GB DDR5 4800 SODIMM for TerraMaster NAS

This 16GB DDR5 module runs at 4800 MT/s with CL40 latency and 1.1V operation. It fits the TerraMaster U12-500 PLUS, U4-500 and U8-500 PLUS as a direct memory upgrade. The unbuffered non-ECC design matches the factory specification for these NAS platforms. Builders who need ECC error correction or registered DIMMs cannot use this module.

Thermals noise and power draw

The SODIMM operates at the standard 1.1V DDR5 voltage without a heat spreader. Passive cooling inside the TerraMaster chassis keeps the module within JEDEC thermal limits during typical NAS workloads. Power draw scales with the 4800 MT/s data rate and single-rank 1Rx8 organisation. The module adds no audible noise because it has no moving parts.

Sustained load behaviour

Under continuous file-serving or virtualisation tasks the memory maintains its rated 4800 MT/s speed and CL40 timing. JEDEC-compliant signalling ensures stability during extended multi-threaded access across the 262-pin interface. The single 16GB rank simplifies the memory controller load compared to dual-rank alternatives. Workloads that exceed 16GB of physical memory will still trigger swapping to storage.

Points forts

  • 16 GB DDR5 4800 MHz boosts multitasking speed
  • CL40 latency and 1.1 V keep power draw low
  • 262-pin SODIMM fits TerraMaster U12-500 PLUS U4-500 U8-500 PLUS
  • JEDEC-standard module ensures warranty-safe upgrade
  • Single 1Rx8 rank simplifies installation in compatible NAS

Caractéristiques

BrandOWC
Part Number4S8D51R816GB
Capacity16GB
Type262-Pin DDR5 Non-ECC SODIMM
SpeedDDR5 4800 (PC5 38400)
CAS Latency40
Voltage1.1V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemTerraMaster U12-500 PLUS
TerraMaster U4-500
TerraMaster U8-500 PLUS
TerraMaster T12-500 PRO
TerraMaster T9-500 PRO

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Questions sur cet article

How do I install this 262-pin SODIMM in my TerraMaster U4-500, and which step do people often miss?

Power off the NAS, unplug it, open the chassis, align the notch on the 262-pin DDR5 module with the slot key, press firmly until the side clips click, then reassemble; the step most people miss is fully seating both clips so the module does not sit slightly loose.

What maintenance or replacement will this 16GB DDR5 4800 CL40 module need over time?

No scheduled maintenance is required; keep the NAS vents clear of dust so the 1.1V modules stay cool, and replace only if a memory test reports errors or you need more than 16GB capacity.

What limit appears first when this 1Rx8 DDR5 4800 SODIMM runs sustained workloads in a TerraMaster U8-500 PLUS?

The 16GB capacity ceiling is reached before thermal throttling, because the unbuffered 1.1V modules run cool and the single-rank design does not generate excess heat under continuous NAS operations.

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