ViaHardware has posted Part 4 of their VIA Guide. This chapter deals with performance tweaking unique to VIA-based motherboards. Here´s a clip:
When NVidia released the 5.xx series of reference drivers for the TNT/GeForce line of video chipsets, they disabled AGP4X on VIA chipsets that supported it (AP133A, KX133, KT133).Read more
The reason for this was simple: The GeForce2 GTS has been shown to run unreliably on some motherboards in AGP4X mode. The problem is a bit odd, as it seems to vary from motherboard to motherboard, even between motherboard of the same brand/model. The TNT2 and original GeForce, however, function perfectly under AGP4X on VIA chipsets.
