Yes, much better but still not a good indication of how hot it can get at full load.
Download this: http://www.techspot.com/downloads/4965-intelburntest.html
Select Very High, run it and then see what your temps are.
Then to determine whether or not your overclock is stable you need to do a 24 hour Prime run. Except utilizing almost all of your ram. Select the Custom blend test and change the amount of memory utilized. Instead of 1600 MB, have it use about 90% of your memory. Eg. I have 8 GB of ram which is 8192 MB, so I would have it use about 7373MB. or to keep things simple you can just round it up to 7500 MB.
Run that for about 24 hours. If you get no errors or blue screens your overclock is stable.