Well, it seems to be running okay but was just weird that it seems to be using more memory than it used to thats all.
For this Lukey, it's just that more and more applications (programs) these days are running at better rates and
virtualization. This can be problematic sometimes, because for the lower ended computers may not have a good processor that supports virtualization, so their computer will not handle the requests properly or as quickly. This, in turn, can lead to system slowdown, more memory usage, processor consumption, etc. The more time passes, the better programs will get, particularly for Windows 8.
Now, for buying a new processor, yes it might be fine, but does your current processor support virtualization? If you can post your processor make/model, I can look it up.
Processors are the only thing that can give you a boost in CPU performance. Since a CPU and a processor are the same thing.
A lot of people find it a better relief to upgrade 2 GB RAM more than they have already. However, the performance (in your mind) will not last very long, if you're not able to get used to how it functions!
Computers only work to fit customer's needs, but there is no single way to satisfy any customer 100% with computing. Some people want 16 GB of RAM, and some only want 2-3 GB.
I work with 3 GB RAM on a dual-core processor. I'm also a software engineer manager and need a good computer to look at software builds, and other important information (such as bugs, application artifacts, etc.). However, it gets me by all the time, I have no major issues with performance.
On top of that, Internet TV works well on my machine and I can play most low-end games, and this just makes it have many additional benefits.
It's all how you're willing to handle it.
If you're a gamer, and want a good computer to run Battlefield or COD, then a higher end computer would be recommended (Quad-core or Ivy Bridge processor, nVidia graphics, and 8 GB RAM).
If you're an internet quickie or desktop publisher, like me, then a lower-end computer should be fine (Dual-core processor with virtualization, ATI graphics, and 3-4 GB RAM).
Hope this helps!