ASROCK X299 Creator User Manual page 32

PCIe Slot Configurations (For CPU with 44 PCIe lanes)
Single Graphics Card
Two Graphics Cards in
TM
CrossFireX or SLI
Mode
Three Graphics Cards in
TM
3-Way CrossFireX
or 3-Way SLI TM Mode
If a M.2 PCI Express module is installed on M2_1, PCIE2 will be disabled.
PCIe Slot Configurations (For CPU with 28 PCIe lanes)
Single Graphics Card
Two Graphics Cards in
TM
CrossFireX or SLI
Mode
If a M.2 PCI Express module is installed on M2_1, PCIE2 will be disabled.
For a better thermal environment, please connect a chassis fan to the motherboard's
chassis fan connector (CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP, CHA_
FAN4/WP or CHA_FAN5/WP) when using multiple graphics cards.
* If you install CPU with 44 or 28 lanes and encounter CrossFire issues, please
do the followings.
1. Enter UEFI by pressing <F2> or <Del> during system startup.
2. Select "Boot > CSM" from the menu.
3. Set "Launch Storage OpROM policy" to "UEFI only".
4. Press F10 to Save and Exit.
PCIE1 PCIE2
x16
TM
x16
Mode x16
PCIE1 PCIE2
x16
TM
x16
PCIE3 PCIE4
N/A N/A N/A
N/A x16 N/A
N/A x16 N/A
PCIE3 PCIE4
N/A N/A N/A
N/A x8 N/A
X299 Creator
PCIE5
N/A
N/A
x8
PCIE5
N/A
N/A
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