ASROCK X99 Extreme4 Manual Del Usuario página 20

PCIe Slot Conigurations (For CPU with 28 PCIe lanes)
Single Graphics Card
Two Graphics Cards in
CrossFireX
Mode
hree Graphics Cards in
3-Way CrossFireX
TM
*3-Way SLI Mode is not supported for CPU with 28 PCIe lanes.
For a better thermal environment, please connect a chassis fan to the motherboard's chas-
sis fan connector (CHA_FAN1, CHA_FAN2 or CHA_FAN3) when using multiple graphics
cards.
18
PCIE1
x16
TM TM
x16
or SLI
x16
TM
Mode
PCIE2 PCIE3 PCIE4
N/A N/A
N/A x8
N/A x8
PCIE5
N/A N/A
N/A N/A
N/A x4