OptiPlex GX620 – Windows 7 64 Bit

It is not advised to spend too much money upgrading this over a decade 2007 system, as it is cheaper to purchase a more capable Second Hand Business Desktop than a new OS License. This PC can run Windows 7 64 Bit borderline. It’s processor does not pass Windows 10 64 Bit requirements.

System Upgrades

Service Manual

Dell Service Manual

Memory Upgrade:

This system supports 4 GB of RAM (2×2 GB Modules).

amazon.com Crucial CT2KIT25664AA800

amazon.co.uk Crucial CT2KIT25664AA800

Solid State Drive 3.5 “

Upgrading to a Solid State Drive

Legacy BIOS

OS Updates

System Utilities




Follow instructions here for using the Microsoft Update Catalog then follow instructions here for driver installation via the device manager.


5 thoughts on “OptiPlex GX620 – Windows 7 64 Bit

  1. How can I get the SATA Driver for this? I want to install Windows 7 on the OptiPlex GX620. Thanks in advance.

    1. I have Windows 10 32-bit installed on mine and everything works and runs very well. I haven’t tried 64-bit but the system is limited to 4GB of RAM so there’s no reason to (and it would run slower anyway).

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