Upgrading My PC* | EDIT: Building PC - Help with parts.

[Hitman]

If your planning to put the computer together yourself,make sure you touch the metal of your case each time before messing with your components.The static electricity could interfere/possibly fry your components,just to let ya know before hand. That's very true.By meaning you can get the 4830 to perform as the 4850/4870 if you know what your doing,Its all over the net that the 4830 are highly overclock able.I ordered one yesterday to give it a oc and try it out plus being $30 bucks cheaper,it was a great deal

I doubt that you can overclock a HD4830 onto 4870 niveau - there is way more in videocards than just core/shader/ram clocks that you can overclock.

All those cars have TMUs, TAUs, ROPs, shader units, memory interfaces etc etc that cant be changed. So, if you overclock your  Core/Shader/Ram clocks by 20%, your card isnt 20% faster.. and wont come close to a 4870.

The 4830 has 640 shader units, the 4870 has 800 of them, which gives the 4870 massive more performance in games.  overclocking is cool, but unless you overclock pretty hardcore, you wont notice the overclocking with videocards.

my GTX 260  Core/Ram/Shader  has normally 576/2000/1242 MHz -  i overclocked it to 756/2380/1512 MHz - thats a pretty sick overclock and you barely notice it ingame.

Though the overclocking of CPUs is pretty sick, i overclocked my Q9550 from 4x 2.83GHz to 4x 3.8GHz, which really gives an awesome performance boost