You cant OC your memory bit width and the amount of ram there is... you can only OC the core speed and memory clocks, and as overshocked said use precision or something like rivatuner
And for CPU as already said, use the BIOS
I use Rivatuner and GPU-Z. GPU-Z has a sensor screen that can keep you on top of your graphics card temperatures. GPU temps can go into the mid 80's and be fine. Your Phenom II X4 has a max temp of 62 degrees celsius, keep your processor temp under that so you don't damage it. An after market cpu cooler is also very helpful in achieving your desired overclock. Good luck!