Last night, I tried overclocking my celeron a bit. I overclocked it from 2.4ghz to 2.8ghz. It ran flawlessly. I then wanted to get even more out of my system so I decided to overclock my gpu by about 25%, again, it ran flawlessly. I figured I could try even more out of my processor so I stepped it up to 2.9ghz, again no problems. My question is this: Am I harming my components keeping them at these speeds? I leave my pc on 24hours a day, should I not do that with it being overclocked like this? Can I melt my gpu going over like that? I havent gotten brave enough to overclock higher on my celeron,at what speed should I probably call it quits? I have all stock cooling, am I being a dummy for doing this with stock cooling? Any comments and/or suggestions would be very welcomed.