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Green printed circuit board with black memory chips in a 288-pin UDIMM form factor

OWC

OWC 16GB DDR4 2400 CL17 1.2V Non-ECC UDIMM desktop RAM

SKU CH-PQP7-J909Z

A 16 GB DDR4 module running at 2400 MHz with CL17 latency and 1.2 V operation for desktop PCs, workstations and NAS systems

  • Total capacity16 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forDesktops
  • 16 GB capacity lets you run more apps simultaneously
  • DDR4 2400 speed with CL17 latency delivers responsive desktop performance
  • 2 V operation reduces power draw and heat
  • 288-pin unbuffered DIMM fits standard desktop and NAS slots
  • Backward compatible with 2133 MHz systems for easy upgrades

16 GB DDR4 2400 module for desktop and NAS

This 16 GB DDR4 2400 CL17 UDIMM is built for desktop PCs, workstations and compatible NAS systems. It runs at 1.2 V and uses the standard 288-pin unbuffered non-ECC layout. The module matches the specifications of QNAP part numbers RAM-16GDR4A0-UD-2400 and RAM-16GDR4A1-UD-2400.

JEDEC and RoHS compliance with lifetime warranty

The memory is 100 % JEDEC-standard and RoHS compliant, making it a warranty-safe upgrade for supported platforms. OWC backs it with a limited lifetime warranty and an advanced replacement program that includes free technical support. Every unit is tested in-house before it ships.

Suits DIY upgraders; not for ECC or registered slots

This kit suits anyone adding 16 GB of standard DDR4 to a desktop or NAS that accepts unbuffered non-ECC UDIMMs at 2400 MT/s or 2133 MT/s. Systems that require ECC, registered or load-reduced DIMMs cannot use this module.

How it compares

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

Price $79.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $5.00 per GB
Cheaper than about 72% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number2U4D42R816 GB
Total capacity16 GB
Product colorBlack
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Questions about this item

Will the 1.2 V DDR4 modules need any voltage adjustment or replacement over time?

The 1.2 V JEDEC standard voltage is fixed; no adjustment is needed and the modules are designed to last the system's lifetime.

What limits sustained throughput on these CL17 2400 MT/s sticks?

The CL17 latency at 2400 MT/s sets the maximum sustained bandwidth the memory controller can achieve.

How much heat and power do the 16 GB unbuffered DIMMs produce during all-day use?

At 1.2 V the modules draw minimal power and run cool enough that no heat spreader is required.

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