Slots; Pci Slots - MSI MS-6377 Manual

Chapter 2

Slots

The motherboard provides three 32-bit Master PCI Bus slots and two
64-bit Master PCI Bus slots.
PCI 64-bit Slots
PCI 32-bit Slots

PCI Slots

Five PCI slots allow you to insert the expansion cards to meet your
needs. When adding or removing expansion cards, make sure that you unplug
the power supply first. Meanwhile, read the documentation for the expansion
card to make any necessary hardware or software settings for the expansion
card, such as jumpers, switches or BIOS configuration.
Three of the PCI slots are conventional 32-bit PCI slots at 33MHz and
the other two are 64-bit PCI slots at 33/66MHz. The 32-bit PCI bus running at
33MHz produces a peak bandwidth at 133MB/sec. With twice the PCI clock
speed and data lines, the 64-bit PCI slots can produce up to 532MB/sec
throughput. Therefore, 64-bit PCI slots are great for high performance adapt-
ers and help to increase the overall system performance.
Throughput
32-bit
33MHz 133MB/sec
66MHz 266MB/sec
2-26
64-bit
266MB/sec
532MB/sec