Chipsets > Intel > Southbridges

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Models (list)

Sub-type	Number
SIO Series	2
PIIX Series	6
Total	8

Name	Bus frequency	Memory Controller	Ports
SIO Series
Intel SIO	???	None	ISA
Intel SIO.A	???	None	ISA
PIIX Series
Intel MPIIX	???	None	ISA/PIO
Intel PIIX	???	None	5 ISA/PIO/WDMA
Intel PIIX3	133 Mhz	None	ISA/PIO-4/WDMA
Intel PIIX4	133 Mhz	None	ISA/PIO-4/UDMA 33
Intel PIIX4E	133 Mhz	None	ISA/PIO-4/UDMA 33
Intel PIIX4M	133 Mhz	None	5 ISA/PIO-4/UDMA 33

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From collector's point of view