Kernel compiling

[CH]

Hi, I would like to know what would be the most stressing compiling method?  I recall going to the Tom's Hardware website and he mention something about the test he performed such as compiling the Linux Kernel to test the stability of the overclocked CPU.  I wanted to test my underclocked K6-III that is running at 300mhz on 66mhz bus and K6-III itself can perform at 333mhz on 95mhz bus but I put it in the 430TX motherboard from DFI and it works great with the lowest voltage setting and the highest multiplier setting and I prefer to leave it at 66mhz not 75 or 83mhz because it can cause problem with my video card.  What is the command to compile the kernel?  Thanks in advance.   CH