Slows down Mac OS

Open Activity Monitor and go to the System Memory* tab and look for Page Outs and Swap used and also select All Processes and then sort by CPU to show you the process(es) slowing down your Mac and report back.

Using Activity Monitor to show you CPU and RAM usage​

* Mac OS X: Reading system memory usage in Activity Monitor​

And also post the specs of your computer (CPU frequency and type, RAM amount, free storage capacity), which can be found via > About This Mac and Finder > CMD+SHIFT+C > select Macintosh HD > CMD+I > Available / Capacity.

"How to maximise your MacRumors troubleshooting experience" created by mad jew in 2006​

 

Upgrade your ram or run less programs simultaneously.

Those are really the only two options.

 

You only have 2Gb of RAM, which is quite low. You are using it all, and also "swapping" memory onto the hard disk, which is what causes you the slowness.

Upgrade your RAM.

 

windowserver is what draws your desktop/widgets.

All browsers take a lot of ram. Honestly with the way most people use browsers these days you're doing pretty good if you've been using a browser for over an hour and it's under 1GB ram.

Ram is relatively cheap. If your computer can support it I'd go for 8GB if not, then 4 GB.

Either way it'll probably cost you about $40-60 to get that much ram.

Ram is incredibly easy to install, it takes about 2 minutes. Apple has guides on how to do it.

Here's an example:
https://www.youtube.com/watch?v=vUjPnthQ78E

 

Just curious, what CPU is it running?

 

You need to provide more information to help you out here.

Click on the Apple Menu.About this Mac>More Info..>System Report>Model Identifier