High RAM usage

Not really, no - the more RAM you have (and the smaller the paging file), the more RAM windows will use and cache data into. Having Windows use more RAM (especially for caching) is actually a good thing, not a bad thing.

The speed of your RAM has nothing to do with how much RAM is used. Sometimes, a portion of your RAM is utilized for your video card...so that will show in use. In addition, things you have installed and are starting at boot time will eat some of the RAM. Your choice of applications like AV and such have an effect. Also, 64bit code takes more space.

What is important is how much ram you have available...not free. Windows 7 will load things proactively to the RAM from the hard drive and this gives you much faster access when you launch these apps. These apps are cached...and that RAM can be used for other things the instant it's needed. So, while this RAM isn't technically "free", for all intents and purposes it is.

I'd say with a shared video card potential that 1.7GB used seems reasonable.

Well...it appears your computer is processing stuff so obviously the RAM usage is justified. According to your screenshots

Your RAM usage looks normal. The CPU nums are a little high, but that depends on what you were running at the time. My CPU gets only up that high when I do video editing - but then it is a quad core.

+1 for looks normal - your system is doing something (and looks like it has been for a bit, given those CPU graphs), so I expect you're gonna see RAM usage increase. I'm with whs - what is the system doing at the time?

Also worth noting that almost 45% of that "used" RAM is actually just cache - it can actually be made available if a running application needed it.