greenbrucelee

In my opinion you need to get an aftermarket cooler if your going to be overclocking, stock heatsinks are suppose to work at cpus running at stock speed.

70 degrees is very high you are only 2 degrees of burning the chip as it's max is 72 if I remember correctly. you should aim at not going above 60 degrees and you need to use a stress testing program even for the slightest overclock. So download prime95 or OCCT or Orthos to stress the cpu. Get RealTemp to monitor the temps and set the TJ max setting to 95 and have this running whilst running a stress test. you also need to get memtest86 and to stress your ram. you should run a stress test for a few hours atleast 4 imo. Memtest will be fine for a full pass though.

My E8400 overclocks a lot but I have some good components. Overclocking is a relative thing, if all components can be pushed then you should achieve good results but if they can't you won't. A slight overclock wont really show you any preformance increase whereas a medium to big overclock will. Try rasing your FSB by 20 if it boots into windows increase it slightly and keep doing it till you get BSOD then lower to one where you get a boot then your onto changing voltages etc