I know that there are many people who have intel gma 4500 graphics who get low resolution. I myself had this problem, so here is a way to fix this. This worked on my dell latitude e6400 with os x mavericks installed.
Note: QE/CI is still not supported on this graphics card
Just go to this link, and download the zip file. First, install the AppleIntelGMAX3100FB.kext
using any kext installer. After rebuilding system caches (can be done through kext wizard), run the package in the zip. In the installer, make sure it is pointed to your main system hard drive, and custom install resolution. After that, reboot your computer, and there you go!
I was able to go up from 1280 by 768 to 1440 by 900. You should also make sure you change resolution in org.charmelon.boot.plist
GMA 4500M.zip