I only overclock my CPU(since I built my first budget gaming PC about two years ago) I've had Black Edition CPU's so I usually just 'up' the multiplier, not sure if it does a big difference but in CPU intense games I see a little bit better performance.
I had a Athlon X2 7750(stock at 2.7Ghz) overclocked to 3.3Ghz and now I have a Phenom II X4 955(stock 3.2Ghz) overclocked to 3.6Ghz. It's cooled very well by a Corsair H50.
I overclock video cards aswell but not much like 'enthusiasts'. I have a EVGA GTX 470 right now and it's oveerclocked a bit, the temperatures are good overall at 70% fan speed(I can only just hear this over all my case fans) =/
I had a Athlon X2 7750(stock at 2.7Ghz) overclocked to 3.3Ghz and now I have a Phenom II X4 955(stock 3.2Ghz) overclocked to 3.6Ghz. It's cooled very well by a Corsair H50.
I overclock video cards aswell but not much like 'enthusiasts'. I have a EVGA GTX 470 right now and it's oveerclocked a bit, the temperatures are good overall at 70% fan speed(I can only just hear this over all my case fans) =/