http://downloads.viaarena.com/drivers/4in1/via_hyperion%204%20in%201_v453v.zip
Any VIA chipset - but particularly recommended for KT4## series, P4X4## series and newer, for example:
K7 chipsets: KT400, KT400A, KT600, KT880
K8 chipsets: K8T800, K8T800Pro
P4 chipsets: P4X400, P4X400A, PT800, PT880