Asus P5N-T Deluxe - Manual (Page 45)

ASUS P5N-T Deluxe 2-19
• We recommend that you install a VGA card on the primary (blue) PCI
Express slots, and install any other PCI Express device on the PCI Express
slot (black).
• Connect a rear chassis fan to the chassis (CHA_FAN1 or CHA_FAN2)
connector when using two (or three) graphics cards for better thermal
environment. See page 2-27 for details.
• In single card mode, use either the blue or black slot for PCI Express x16
graphics cards to get better performance.
• In SLI™ mode, we recommend that you use the PCIe 2.0 slots (blue slots)
to get better performance.
• We recommend that you provide sufficient power when running NVIDIA ®
SLI™ mode. See page 2-29 for details.