OWC 64GB (2x32GB) DDR5 5600 CL46 SODIMM memory upgrade for Dell OptiPlex 7420 AIO

Compatible Dell OptiPlex 7420 AIO upgrade

This OWC kit provides 64GB of DDR5 memory in two 32GB SODIMM modules. It is built for the Dell OptiPlex 7420 AIO and 7420 AIO Plus all-in-one desktops. The modules run at 5600MHz with CL46 latency and operate at the standard 1.1V DDR5 voltage. They are JEDEC-compliant and validated for warranty-safe installation in those specific systems.

Suits owners of the listed OptiPlex models

The kit matches the factory specifications for the Dell OptiPlex 7420 AIO and 7420 AIO Plus, so buyers of those machines can install it with confidence. It is not for users who need ECC error correction or registered buffer signalling, as these modules are non-ECC and unbuffered. Systems that require a different pin count, voltage, or form factor will not accept this memory. Buyers upgrading other Dell models or different brands should verify compatibility before purchasing.

5600MHz DDR5 speed with CL46 timing

The decisive specification is the DDR5 5600 (PC5-44800) rating combined with CL46 CAS latency. This speed and timing pair must be supported by the platform's memory controller for the kit to operate at its rated performance. If the target system only qualifies slower DDR5 grades, the modules will typically downclock, but the rated 5600MHz figure is the key compatibility marker to check against the Dell documentation.