Memory supported by Dell Optiplex GX150?

[garymac1960]

I want to add more memory to my Dell Optiplex GX150 I know what Dell says it will support but what will it really support? please help

 

[JMMD]

Open the PC and see what's currently installed, purchase the same type and speed.

You can also use something like CPU-Z to show exactly what's installed and how many slots are free.