查了一下，Intel的MCH跟ICH縮寫的全名如下：

MCH為Memory Controller Hub裡面有這些東西
Memory Controller Hub Bus
PCI Express Bridge Bus
Extended Configuration Registers Bus
MCH Error Reporting Bus

ICH為I/O Controller Hub的縮寫
IDE Controller Bus
S-ATA or RAID Controller Bus
SMBus Controller Bus
USB Controllers Bus
LAN Controller Bus
AC97 Controller Bus

大概就是這樣吧