overclocking is intended to get more bang for your buck. the idea of overclocking is not to push your components to near breaking point, but to make gentle changes that the chip can handle. I've overclocked my ram by changing the cycles. it used to be a 5-5-5-15, I overclocked it to 4-4-4-10/12. my system hasn't crashed because of it. if you're getting system crashes frequently, you're overclocking wrong.