Well, I have an Intel P4-800 dual cpu system.
It had 512MBof ram and PCLinuxos 2010 could just about run. I could do one thing at a time. If I tried 2 things the system would freeze for ages.;
I upgraded to 1.5GB of ram, now all is sweetness and light. I can mirror Aarnet, pick up email, play a dvd or listen to music. The machine is totally different to the one I was given.
Having said that, I also hace a Soltek motherboard with an AMD2700 cpu in it and 1MB of ram. This machine I find limiting in as much as I expect something to work in a flash and it dos'nt.
Soooo. Yes the more ram the better.
One machine has 8GB os ram and at the moment Mandriva 2010 is on it, less said the better, but when I click on something and I expect it to do something,,,,,It does,straight away..no thinking about it.