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Four black DDR4 desktop memory modules, no heat spreaders

OWC

OWC 128GB (4x32GB) DDR4 3200MHz CL22 desktop RAM

SKU CH-61FM-EB1SM

A 128 GB DDR4 kit of four 32 GB modules running at 3200 MHz CL22 and 1.2 V for desktop PCs

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 128GB (4 x 32GB)

  • 128GB total capacity across four 32GB modules
  • 3200MHz DDR4 speed rated at PC4-25600
  • CL22 latency with 1.2V low-voltage operation
  • Backward compatible with 2133, 2400, 2666 and 2933MHz systems
  • JEDEC compliant and ROHS certified for warranty-safe upgrades

128GB DDR4 3200MHz Kit

This 128GB kit contains four 32GB unbuffered UDIMM modules rated at DDR4 3200 with CL22 timings. It targets desktop PCs, workstations and NAS systems that need large memory capacity for multitasking or large datasets. The modules run at 1.2V and follow the 288-pin DDR4 form factor.

Thermals and Power at Standard Speeds

Operating at the JEDEC 1.2V specification keeps power draw low and heat output modest during typical desktop workloads. No heat spreader is fitted, so the modules rely on case airflow which is sufficient for standard-frequency operation. The kit is backward compatible with 2133, 2400, 2666 and 2933MHz platforms.

Behaviour Under Sustained Load

Under prolonged heavy use the memory continues to run at its rated 3200MHz CL22 without thermal throttling because the low voltage limits temperature rise. Stability is maintained by full JEDEC compliance and OWC in-house validation on each module. The dual-channel population across four slots delivers consistent bandwidth for extended rendering or virtualisation sessions.

How it compares

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

Price $676.99
Pricier than about 90% of the 3,647 comparable items (median $90.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 93% of the 3,251 comparable items (median 16 GB).
Price per GB $5.29 per GB
Cheaper than about 68% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number3U2D42R8128S
Total capacity128 GB (4 × 32 GB)
Product colorBlack
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
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

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Questions about this item

How do I install the four 32GB DDR4 288-pin UDIMM modules, and what step do people often miss?

Power down, open the case, align each module notch with the slot key, press firmly until both retention clips click, then enter the BIOS to verify all 128GB are detected at 3200MHz.

What maintenance or replacement will the 128GB DDR4 3200MHz CL22 kit need over time?

No scheduled maintenance is required; keep interior dust-free and ensure case airflow stays adequate. If a module fails, OWC provides a limited lifetime warranty with advanced replacement.

What limit appears first when the 4x32GB DDR4 3200MHz kit runs sustained heavy workloads?

The CL22 latency at 1.2V is the primary constraint; sustained loads will hit timing bottlenecks before thermal limits, since the modules have no heat spreaders.

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