CPU yes, ram no. The computer did encounter freezes frequently before whether overclocked or not, which is probably caused by bad software. However, all I needed to do is to restart the thing. but now I have to reset the CMOS for it to post again. I did overclock the FSB by 50 percent, but OCCT stress tested the processor AND ram as stable for 8 hours (that's how long the test was set to). The temperatures are all good, cpu is 25 idle 42 load.