AC82G41SLGQ3 Datasheet, PDF (531/604 Pages) Intel Corporation – Intel® 4 Series Chipset Family

Functional Description
Table 34.
will take place along 8 of the PCI express lanes through each ports. This means that
when two x16 graphics cards are plugged into both the slots, the (G)MCH will
dynamically down sample and transaction takes place only through 8 lanes.
The PCI Express controllers on the (G)MCH has been designed to support ADD2 and
MEC only the primary slot. When a ADD2 or MEC card is plugged into the secondary
slot, the card will not function.
Table 34 shows the usage models supported on the (G)MCH for PCI Express graphics
cards, ADD2 and ADD2+ cards.
Supported Usage Models
Ports
PCIe Graphics Card
PCIex16 card in stand alone
Primary Slot
PCIe x8 card in dual graphics mode
PCIe x8 card in dual graphics mode
Secondary Slot
No support available with card only in secondary slot
MEC
X
N/A
ADD2
X
N/A
NOTE: X indicates support available is N/A - Support not available.
Datasheet
531