Breathing life into an old system with an SSD?

[JackST]

Hi
so i have this old Dell desktop PC, I believe its a Dell Dimension E520
It has 1GB of RAM, a dual core Pentium D, and a 120GB HDD.
It's pretty slow as you can imagine but I was thinking if I upped the ram to maybe 3GB and added a 120GB SSD then I would see some performance increase?

My question is, What won't I benefit from by adding 2 GB of ram and an SSD? Or what will still remain slow?
Thanks

 

[TopLuca]

The SSD will only improve its booting times and time to open some programs but the in game ( Program ) performance won't differ that much . Maybe more RAM will do better