PC that i used :

proc: Intel Core 2 Quad Q6600
MB: Gigabyte GA-P35-DQ6
mem: Team Xtreem DDR2 1200MHz CL 5-5-5-15 2 GB
GPU: XFX GeForce 8800 GTS
cooling: Thermaltake Bigwater 760i
PSU: silverstone olympia 1000

For Proc :
Q6600 FSB = 1066. Real clock = 266Mhz x 9 ( multiplier ) = 2.4Ghz
if you want a 3Ghz proc. speed, just raise FSB value to 333Mhz. NOT raise FSB value extremely..
or your proc. will blow up.. raise it continously.. ( 5mhz/10Mhz )

if your motherboard can change multiplier value, you can raise multiplier to get a faster speed too.

If Computer can't boot normally. try to raise voltase value.. still can't boot, set peripheral volatage to standard.


For memory :
Just try change timing value to lower. can't work, raise volatge continously.




Some useful tools :

Rivatuner


SuperPI


ATITool


GPU-Z


CPU-Z


Orthos

Nice post, Ikhsan4488, very technical, with a lot of precise infos.
However, for me it does not sound like a tutorial. For a tutorial I would expect more text, more step-by-step explanations.
I don't really learn a lot from this, except that my proc could simply blow up.
So, if you could add a reply here and be more descriptive, with real sentences explaining really what has to be done, I would accept this as being a real tuto. Else, it would remain a standard hardware (and very useful) topic, but not a tutorial.
Regards
Yordan

I would like to add that people thinking about over clocking should research it and be careful. It's possible to void warranties, damage hardware, etc if you over clock too intensely without taking precautions. Further it should be noted that over clocking will almost always raise the temperature of your system so if you want to keep a case silent without fans whirring up or already have a hot case, extra care should be taken in regards to increased temperatures.

I tried overclocking to get better performance out of Crysis. It worked for awhile, but then I started getting graphical glitches so I just put it back to its default clock speed.

I do have a CoolIt Elminiator that really kicks ass for cooling, but unfortunately there are a couple of problems for anyone looking into this particular unit:

First off, I got a defective unit that made clicking sounds... So I submitted an request to replace it, and got another one, and the fan is shot. So expect non-perfection.

Second, it doesn't fit in my case on the side, because my case has an indentation in it, and makes it so I cannot close my cover to my computer case....

But for cooling it gets the job done.

I'm running a Core 2 Duo, 3ghz and my idle temp is usually 28C

I am running

Cord2 Duo E 6700 2.66GHZ
Asus 8800GTX 328MB
4GB 800mhz ram
Asus P5n32-E-SLI motherboard
and a 600W power supply.

Althout i've had no problem handling any game at its max setting, i decided to push my computer to its limits recently.

I overclocked to 3.2GHZ i believe if i recall correctly and my system was very unstable. I have 7 fans mounted on the case, yet the temperature increase, i felt was defnitely going to decrease my cpu's lifetime.

Anyway i heard that processor run at like 200Mhz higher at the intel lab, and they downgrade it for safety. This is just what i;ve heard^_^

Overclocking is great if you have proper cooling like a sick watercooling system in my opinion. Other than that its a pretty huge risk