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Eight black DDR4 UDIMM sticks in a row

OWC

OWC 128GB (8x16GB) DDR4 2400 CL17 288-pin Desktop RAM

SKU CH-7BX8-4ZBN5

Eight-module 128 GB kit of DDR4 2400 CL17 UDIMMs at 1.2 V for desktop upgrades

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 128GB (8 x 16GB)

  • 128 GB total capacity from eight 16 GB modules for heavy multitasking
  • DDR4 2400 MHz speed rated at PC4-19200 for fast data throughput
  • CL17 CAS latency and 1.2 V operation for efficient desktop performance
  • Non-ECC unbuffered 288-pin UDIMM design fits standard desktop motherboards
  • Backward compatible with 2133 MHz systems for flexible upgrade options

128GB DDR4 2400 Kit for Desktop Workstations

This 128GB kit contains eight 16GB UDIMM modules rated at DDR4 2400 with CL17 latency. The unbuffered, non-ECC design runs at the standard 1.2V JEDEC voltage. It targets desktop PCs, workstations and compatible NAS systems that accept 288-pin DIMMs and need high capacity for multitasking or large datasets.

Sustained Load Behaviour at CL17 2400MHz

Operating at the rated 2400MHz speed with CL17 timings, the modules maintain consistent throughput during extended workloads. The dual-rank 2Rx8 organisation helps keep bandwidth stable when all slots are populated. Backward compatibility with 2133MHz platforms allows the kit to run at the lower speed if the motherboard requires it.

Tool-Free DIMM Installation in Eight Slots

Each module uses a standard 288-pin edge connector that seats with finger pressure until the retention clips engage. No heat spreader is present, so clearance around tall CPU coolers is not reduced. The main installation risk is failing to fully seat all eight modules or mixing them with existing DIMMs of different speed or rank, which can prevent the system from posting.

How it compares

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

Price $622.99
Pricier than about 90% of the 3,647 comparable items (median $90.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 93% of the 3,251 comparable items (median 16 GB).
Price per GB $4.87 per GB
Cheaper than about 74% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number2U4D42R8128K
Total capacity128 GB (8 × 16 GB)
Product colorBlack
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Other versions of this model

5 more in the same range

Questions about this item

Will this 128 GB kit fit in a standard desktop with four DDR4 slots?

The kit contains eight 16 GB modules, so it requires eight 288-pin DDR4 slots; a four-slot board cannot accept all modules at once.

Is the memory compatible with systems that only support 2133 MHz DDR4?

Yes, the modules are backward compatible and will run at 2133 MHz on platforms limited to that speed.

Does this kit include any heat spreaders or RGB lighting?

No, the modules are plain black PCBs without heat spreaders or LEDs.

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