|I just had a look at the BIOS chapter of the manual for the GA-K8U & there aren't many overclocking options available. There's no way to control the AGP, RAM or HyperTransport buses from overclocking along with the CPU, so your results are gonna be very limited. All you can do is enter the BIOS, go to the Frequency/Voltage Control menu, then raise the CPU clock a little at a time & see what happens.|
Start at 205MHz, save the settings & exit, then boot into Windows & test for stability using OCCT.
If all is well, go back to the BIOS & bump up the CPU clock to 210MHz, then repeat the above process. Continue like this until your system becomes unstable. At that point, you have the choice of backing off to the last stable setting or increasing the CPU voltage & trying for more. If at anytime your system becomes unbootable, use the clearCMOS jumper to reset the BIOS (unplug the power cord 1st), then start from scratch.
I just noticed that something's not right with your RAM configuration. I misread the SIW report as 768MB, but you list 2GB (2 x 1GB). CPUZ shows 2GB but it's running at 1/2 speed...100MHz instead of 200MHz. But then if you click on the other CPUZ links that show the individual sticks, it lists two as 512MB PC3500 & one as 1GB PC3200. Running 3 sticks will automatically underclock your RAM. Unfortunately, it's a limitation of the memory controller built into the CPU & there's noting you can do about it. And I believe the RAM underclocking will also occur with two sticks if they're both double sided.
Try sorting out the RAM issue before overclocking. Remove all sticks but one, then boot into Windows & run CPUZ...see if the RAM speed is back up to 200MHz. If it is, add a 2nd stick, run CPUZ again & see what speed it's running at.