You are running a little high.
You shouldn't be going over 70 degress Celsius.
Rather then going out and buying, make sure your fan and heatsink are properly installed on. (Make sure your fan is running
If it is, try reapplying thermal paste.
Aftermarket fans and heatsinks only bring it down a couple degrees, so it will still be a little high.
Try the first suggestions first.
If this doesn't work, download Speedfan, and try to see at how many RPM's your fan is spinning at, if the temperatures are still high, try to speed up the RPM.