Asus P4P800 - Manual (Page 52)

2-18 Chapter 2: Hardware information
2.6.4 AGP slot
This motherboard has an Accelerated Graphics Port (AGP) slot that only
supports +1.5V AGP cards. When you buy an AGP card, make sure that
you ask for one with +1.5V specification. Note the notches on the card
golden fingers to ensure that they fit the AGP slot on your motherboard.
P4P800
®
P4P800 Accelerated Graphics Port (AGP)
Keyed for 1.5v
Install only 1.5V AGP cards on this motherboard! 3.3V AGP cards are
not supported in this motherboard.
If installing the ATi 9500 or 9700 Pro Series VGA cards, use only the
card version PN xxx-xxxxx-30 or later, for optimum performance and
overclocking stability.