CPU upgrade for Dell Optiplex 390 - CPUs, Motherboards, and Memory - Linus Tech Tips
Dell Optiplex 390 MT Intel Core i5-2400 3.10GHz CPU 4GB RAM No HDD No
Amazon.com: Dell Optiplex 390 Business High Performance SFF Desktop Computer PC (Intel Quad-Core i5-2400 up to 3.4GHz, 8GB DDR3, 1TB HDD, HDMI, DVD, Windows 10 Pro 64-bit) (Renewed) : Electronics
Fast And Dependable Dell Optiplex 390 Desktop | Intel i5 Processor | 8GB RAM | 500GB HDD | WIFI | Windows 10 Pro