Manual

 
Express x16 graphics card to get better performance.
• In CrossFireX™ or SLI mode, use the PCIe 2.0 x16_1 and
PCIe 2.0 x16_2 (red) slots for PCI Express x16 graphics cards to get better
performance.
 
CrossFireX™ or SLI mode. See page 2-37 for details.
• Connect a chassis fan to the motherboard connector labeled
CHA_FAN1/2/3 when using multiple graphics cards for better thermal
environment.
ROG Maximus III Formula 2-25