Similar to what we're used to seeing on most Abit products, the KX7-333R includes all of the overclocking features that even the most avid overclocker requires. First, you can set the FSB from 100MHz all the way up to 250MHz in 1MHz increments. Multiplier adjustments are also available up to 13x, as well as FSB:AGP:PCI ratio adjustments between 3:2:1, 4:2:1 and 5:2:1. This allows you to increase the FSB while leaving the AGP and PCI bus speeds at default, which in turn eliminates AGP and PCI devices from being a bottleneck while overclocking.
Core, DIMM and I/O voltage adjustments are also available. VCore can be adjusted from 1.1v all the way up to 1.85v, DIMM voltage can be set from 2.55v to 2.85v and I/O voltage between 3.5v and 3.65v. Voltage adjustments come in very handy when overclocking as they help create stability at overclocked speeds. Some competing boards, such as the EPoX 8K3A+, allow you to adjust the core voltage slightly higher than this, however, we have found that the difference in overclocking results is negligible in most cases.
I was able to overclock my AthlonXP 1800+ (1.53GHz) all the way up to 1.85GHz (11x168MHz) with a VCore of 1.85v. This is a very impressive overclock and is the same as, if not better than the results we have seen from competing KT333 motherboards. At this speed the board remained completely stable and even managed to run 12 hours of 3DMark2001 loops without crashing once.