Well, the question, which has been troubling most of you for a long time already seems to be finally cleared up. Can AMD Duron work with the FSB set to 150MHz? We tested about two dozens of different Duron processors with EPoX EP-8KTA3 mainboard (KT133A) chipset and can say that all the CPUs tested worked fine with the FSB set to any value from 100MHz (200MHz DDR) to 150MHz (300MHz DDR). Of course, we had to reduce the clock multiplier for some of them with the already familiar to you "pencil method" (read AMD Duron Overclocking Experience article for more details). We failed to make the system work at the frequency exceeding 150MHz. We will discuss the reasons a bit later.
So, the "right" mainboards based on VIA KT133A chipset will undoubtedly turn out the best solution for overclocking fans. And now let us remind you shortly, how you could define the "right" mainboard. It should allow:

• Changing the processor clock multiplier;
• Changing VIO up to 3.6V or higher;
• Changing Vcore (up to 1.85V preferably).

Unfortunately, EPoX EP-8KTA3 mainboard can’t be regarded as a 100% "right" mainboard, because the third condition isn’t implemented to the full extent: the maximum allowed voltage for Duron processors makes only 1.75V on this mainboard, which sometimes prevents you from getting better overclocking results. This "trifling drawback" is very likely to be soon eliminated by a new BIOS version released.
And in the meanwhile, we will patiently wait for ABIT KT7A and ASUS A7V133, which can potentially become absolutely fit for overclocking needs (judging by the available specs and our experience working with their predecessors: ABIT KT7 and ASUS A7V).