This model and Operating System is not supported by Dell.
CPU Upgrade – for WIndows 8.1 64 Bit compatibility
- CPU Upgrade
SSD – Solid State Drives
- This unit accepts a 2,5″ Form Factor SATA SSD see Upgrading to a Solid State Drive
RAM – Random Access Memory
Its recommended to upgrade to 4 GB of RAM:
- Crucial Part http://www.crucial.com/upgrade/Dell-memory/OptiPlex/OptiPlex+GX620+Series+(Desktop%2c+Mini-Tower%2c+and+Small+Form+Factor)-upgrades.html
Refer to the User’s Guide when upgrading components.
For best results Clean Install wiping all partitions:
Dell Backup and Recovery
Only install if you have a larger than a 120 GB SSD/HDD
Note this system won’t be able to boot from a Rescue Disk (external hard drive) so make a Factory Backup (Bootable USB Flash Drive).