Yes, you can overclock a uATX board with built-in video. The K8S-MX\nmobo allows 125% overclocking the CPU, which I've done on my\nSempron754 2600+, now running at 2.0GHz instead of its normal 1.6GHz.\nI figured as long as AMD had pre-overclocked the CPU voltage (1.5V\ninstead of 1.35/1.4V) I might as well take advantage.\n\nWhen overclocking a K8 with a locked multiplier (like mine) you have\nto look out for the HT I/O bus and the DDR memory, whose clocks will\nmove in lockstep with the CPU frequency.\n\nFirst, the HT: Standard on this SIS-based uATX is 800MHz. You have\ntwo choices. I tried both and they both worked. The conservative\napproach is to say that Asus knew what it was doing by limiting the HT\nto 800MHz. So, back the HT setting to 600MHz, and when the CPU is\nbumped up the max, the HT will be at a conservative 750 MHz. The\nother thing is to realize that Asus is probably trying to protect\nK8S-MX users from themselves. So they limited the HT to 800MHz so\nthat when the silly user overclocked to max, the HT would rise to\n1GHz - which the SIS chip will run fine at. Like I said, I tried both\nand they both worked.\n\nThe memory is not as simple. I assume everybody will start with\nDDR3200, called "200" in the bios because that's the actual clock MHz\napplied to the DDR sticks. A simplistic approach would be to set the\nDDR clock to 166. That way, when you overclock to 80% of max, the\nactual DDR clock will be back up to an even 200 again. To overclock\nto max, you have the option of setting the DDR clock to 133 (boo!) or\npushing the DDR spec by allowing the 166 (166.667) setting to be\noverclocked to 208.33MHz. If you take this choice, you can increase\nthe DDR voltage, normally 2.5V, to 2.6V.\n\nThat's all the problems, right? Wrong. The problem is, the mobo's\nbios is too damn smart.\n\nSay you initially run the unit with vanilla settings. No\noverclocking. Then enter the bios, select manual CPU clock frequency\nbut leave the setting at the normal 200. Now you get to see the\ndefault reading of the SPD roms on the DDR sticks; the CL, for\ninstance will probably be 3 (as mine was). Well, if you manually set\nthe DDR clock to 166, the mobo bios is smart enough to know that, at\n166MHz, your DDR can operate at CL=2.5, and will make that adjustment!\n<-\- **big problem**\n\nSo when you then increase the CPU clock to 250, the DDR stick will be\nat 208.33 and CL=2.5, which for a DDR stick that's nominally 200 and\nCL=3 is very, very bad.\n\nThe reason you initially run the unit with vanilla settings, no\noverclocking, is to determine the SPD values of the DDR parameters.\nThen manually enter all of them, except 166 for the DDR clock. That\nway, when you overclock the CPU to 250, the DDR stick will be at\n208.33 and CL=3 (if that was the default). Don't forget to set the\nDDR voltage to 2.6v.\n\nYes, fellow penurious overclockers, inexpensive uATX mobos _can_ be\noverclocked. Even the ones made by Asus with bioses that are too\nclever by half. ;-)\n\nThe Sempron754 2600+? No sweat. It could run lots faster, if the\nmobo would allow it.