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A green printed circuit board with black memory chips and gold edge contacts, no heat spreader

OWC

OWC 32GB DDR4 3200 CL22 2Rx8 288-pin 1.2V Non-ECC UDIMM desktop RAM

SKU CH-AH5R-JQ63Y

32GB DDR4 3200 CL22 UDIMM for desktops, workstations and NAS, backward compatible to 2133, 2400, 2666 and 2933MHz

  • Total capacity32 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forDesktops
  • 32 GB capacity lets you run more apps and larger files simultaneously
  • DDR4 3200 speed with CL22 latency delivers responsive desktop performance
  • 2 V operation reduces power draw and heat in your system
  • 288-pin unbuffered non-ECC DIMM fits standard desktop and workstation slots
  • Backward compatible with 2133, 2400, 2666 and 2933 MHz platforms

OWC 32GB DDR4 3200 UDIMM

This 32GB DDR4 3200 CL22 module is a non-ECC unbuffered DIMM built to JEDEC standards. It targets desktop PCs, workstations and compatible NAS systems needing a straightforward capacity increase. The 288-pin 1.2V design matches OEM specifications for reliable integration.

DDR4 3200 backward compatibility limits

The module runs at 3200MHz PC4-25600 with CL22 latency and will downclock to 2133MHz, 2400MHz, 2666MHz or 2933MHz when the platform requires it. Maximum throughput is bounded by the DDR4 3200 interface and the memory controller of the host system. No heat spreader is fitted, so airflow in the chassis manages thermals.

Replaces QNAP RAM-32GDR4S0-UD-3200 and T0

This stick is a direct replacement for QNAP part numbers RAM-32GDR4S0-UD-3200 and RAM-32GDR4T0-UD-3200 with identical specifications. The upgrade is worth it when the device supports 32GB per slot and the workload benefits from the added capacity over smaller modules. OWC testing aims to meet or exceed the original manufacturer specs.

How it compares

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

Price $179.99
Pricier than about 65% of the 3,647 comparable items (median $90.99).
Total capacity 32 GB
Higher than about 70% of the 3,251 comparable items (median 16 GB).
Price per GB $5.62 per GB
Cheaper than about 64% of the 3,251 comparable items (median $6.75 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 nameOWC
Part number3U2D42R832 GB
Total capacity32 GB
Product colorBlack
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Questions about this item

Should I choose the 32GB DDR4-3200 CL22 module or a different capacity?

This module provides 32GB in a single 288-pin UDIMM running at 3200MHz with CL22 timing; select it when your board has a free slot and you need that exact density.

What does the 3200MHz rating deliver once the DIMM is installed?

The memory operates at DDR4-3200 (PC4-25600) with CL22 latency at 1.2V, giving the bandwidth and timing specified for desktop, workstation and NAS platforms.

Which interface does the 288-pin UDIMM use and what speed ceiling applies?

It uses the standard DDR4 288-pin unbuffered interface and will run at 3200MHz or down-clock to 2933MHz, 2666MHz, 2400MHz or 2133MHz depending on the system.

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