kerezov,
Here's a quick example. Look at my computer specs next to my name:
In Windows Task Manager on the Process tab I have Internet Explorer with 19 tabs open, One tab has a 5MB Shockwave Flash file which continuously loops, Firefox (4) tabs, one watching Utube videos, Ulead Photoimpact (graphics program) working with a 5MB graphic file, Deneba Canvas ( another graphic program) working with a 6MB bitmap file, Ulead Video Studio working with a 3MB mpeg file, Windows Mail, AutoRuns, Destiny Media Player streaming radio at 110 kbps, PCTools Spyware Doctor with Antivirus, PCTools Firewall Plus, Textpad (my text editor), Windows Explorer, Powerdesk Pro (a Windows Explorer replacement), Forensic Toolkit (working with a 39 MB image of a partition), Snagit (a screen capture program), Creative Media Player, Cyberlink Power2Go (burning another Windows7 iso file) ACDSee and Task Manager.
Click on the Memory section and have it display the programs which are using the most amount of memory
I have 64 processes, CPU spikes to 24%, but is fairly steady at 2-7% and Physical Memory is 62%
Uptime is over 20 hours