I just installed Plesk onto a fresh server and i noticed its using 963MB worth of Ram. Does Plesk really use this much ram? With my server only having 1GB, can that 5% worth of free RAM really let the server perform?
No, Plesk does not. I believe the default will run around 50-100MB. It's basically it own Apache server with something like 5 processes. You can modify this number to your liking and reduce the PSA resources usage. You have to go in and do a top, then find httpsd to see the ones used by PSA.
Sarcasm, the 6th Ponyman of the Apocalypse.
Please do not inquire about Tim, the 5th Ponyman.