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Green PCB memory module with black chips and gold edge contacts

OWC

OWC 4GB DDR4 2133 CL15 1.2V Non-ECC UDIMM desktop RAM

SKU CH-7RXP-CC54P

A 4 GB DDR4 2133 MHz desktop memory module with CL15 latency, 1.2 V operation and 288-pin unbuffered design for straightforward PC or NAS upgrades

  • Capacity4GB
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.2V
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • Boosts system responsiveness with a 4 GB DDR4 2133 MHz module
  • Low 1.2 V operation cuts power draw and heat
  • CL15 latency keeps data access quick for everyday workloads
  • 288-pin unbuffered UDIMM fits standard desktop and NAS slots
  • JEDEC and RoHS compliant for a warranty-safe upgrade

OWC 4GB DDR4 2133 UDIMM

This OWC module adds 4GB of DDR4 2133 memory to desktop PCs, workstations or compatible NAS systems. It runs at 1.2V with CL15 latency and uses an unbuffered 288-pin layout. The stick carries no heat spreader or LEDs, keeping the profile low for tight slots.

Sustained load behaviour

JEDEC-standard timing and 1.2V operation keep power draw steady during long sessions. Unbuffered topology means the memory controller talks directly to the DRAM, so latency stays predictable when multiple applications or large files remain open for hours.

Upgrade context

The part matches QNAP part number RAM-4GDR4-LD-2133 spec-for-spec, making it a direct replacement for that module. Adding this 4GB stick is worthwhile when the system currently runs on less memory and the board has a free 288-pin slot.

Points forts

  • Boosts system responsiveness with a 4 GB DDR4 2133 MHz module
  • Low 1.2 V operation cuts power draw and heat
  • CL15 latency keeps data access quick for everyday workloads
  • 288-pin unbuffered UDIMM fits standard desktop and NAS slots
  • JEDEC and RoHS compliant for a warranty-safe upgrade

Caractéristiques

BrandOWC
Part Number2U1D41R804GB
Capacity4GB
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
ColorBlack
Heat SpreaderNo
Recommend UseDesktops
LED ColorNone

Questions sur cet article

How much power does a 1.2V DDR4 2133 CL15 UDIMM draw when the system runs all day?

At 1.2 volts the module follows JEDEC low-voltage DDR4 limits, so heat output stays modest even during continuous operation in a desktop or NAS.

What motherboard slot and memory controller must I already have for this 288-pin non-ECC UDIMM to work?

You need a desktop or workstation board with a DDR4 memory controller and a free 288-pin UDIMM slot; the module is unbuffered and non-ECC, so the platform must support that configuration.

Will this CL15 2133MHz stick run stably alongside older DDR4 modules rated at higher CAS latency?

The motherboard will train all installed DDR4 at the slowest common speed and loosest timing, so mixing CL15 with higher-latency kits works but the faster stick will drop to match the slower ones.

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