if you really hate your processor that much feel free to just stick it in the oven and watch it melt... you need aftermarket cooling to do any real OCing.
However with that small of an OC only 300 mzh it wouldn't take a massive cooler to get the job done. I think you might could even just raise the multi to get it to 3.9 ghz, and possibly bump vcore a tiny bit if it won't boot.