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Green circuit board with black memory chips and gold edge connector

OWC

OWC 16GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM for Dell OptiPlex 7070 SFF Tower

SKU CH-64R5-XJ5S7

16 GB DDR4 2666 MHz CL19 UDIMM for Dell OptiPlex 7070 SFF and Tower systems

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB capacity boosts multitasking headroom for Dell OptiPlex 7070 SFF and Tower
  • DDR4 2666 MHz CL19 timing delivers responsive desktop performance at 1.2 V
  • 288-pin unbuffered non-ECC UDIMM fits straight into the 7070 memory slots
  • JEDEC and RoHS compliant build ensures a warranty-safe upgrade path
  • Backward compatible with 2133 MHz and 2400 MHz systems for flexible deployment

Dell OptiPlex 7070 Memory Upgrade

This 16GB DDR4 module is built specifically for the Dell OptiPlex 7070 SFF and Tower desktops. It delivers a straightforward capacity increase for users running memory-intensive applications or heavy multitasking workloads. The non-ECC unbuffered design matches the factory specification for these workstations. Buyers needing ECC error correction or registered modules for server platforms cannot use this kit.

Sustained Workload Stability

Operating at the standard 1.2V JEDEC voltage, the module maintains its 2666MHz CL19 timing during extended sessions without requiring overclocking headroom. The 2Rx8 organisation provides consistent bandwidth for rendering, virtualisation or large dataset processing. Systems limited to 2133MHz or 2400MHz bus speeds will automatically downclock the module to the supported frequency. Builders chasing extreme low-latency benchmarks or enthusiast overclocking profiles will not find headroom here.

Tool-Free Slot Installation

The 288-pin UDIMM form factor seats directly into the OptiPlex DIMM slots with no cables or adapters required. Dell's chassis design typically exposes the slots after removing the side panel, allowing a quick press-in fit. The most common issue occurs when the retention clips are not fully engaged, causing the system to fail POST with a memory error code. Mixing this stick with existing modules of different ranks or speeds can also trigger instability.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $91.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.75 per GB
Cheaper than about 68% of the 20,941 comparable items (median $8.19 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 number2U6D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 Non-ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell OptiPlex 7070 SFF
Dell OptiPlex 7070 Tower

Other versions of this model

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Questions about this item

How much power does the 1.2V DDR4 module draw when the Dell OptiPlex 7070 runs all day?

The module operates at the standard JEDEC 1.2V, so it adds only the normal DDR4 power envelope to the system — no extra voltage or heat spreader is required.

What must the Dell OptiPlex 7070 already have for this 288-pin UDIMM to work?

The desktop needs free 288-pin DDR4 UDIMM slots and a BIOS that supports non-ECC unbuffered memory; the OptiPlex 7070 SFF and Tower both meet that requirement.

Will this 2666MHz CL19 kit run stably alongside existing 2133MHz or 2400MHz sticks in the same OptiPlex 7070?

Yes — the module is backward compatible with 2133MHz and 2400MHz speeds, so it will down-clock automatically to match the slower installed memory.

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