the 220 not a good gaming card it kind of weak. but as it a dell you have to replace the ps with a larger one to put in a better video card. i would download msi afterburner...and i would see if the fan is moving on the video card....you can turn the fan speed up without hurting the card with afterburner. you should be able to see and hear the card spin up. if the fan does not change speeds...then that could be why your gpu is over heating. if the fan does spin up to speed i would look to turn dows the video settings in the game. the 4axxx and other settings are fine for high end card but for older cards it can cause them to overheat.i would try running the game on low everything and see if the card with afterburner running stays cooler.
I have been in the market for a new Graphics Card, but I've been having a hard time finding ones compatible with my XPS 3000. Whenever I play a game, I can hear the fan speeding up, getting louder and louder until eventually the computer shuts off. I don't know if that noise I'm hearing is actually the fan or not, but I am sure it is. I will try Afterburner now and see if this is the problem.
Edit: I'm now positive the noise I hear is the fan. I have tested out Afterburner and my fan is able to change speeds.