Gigabyte GA-8IRX User Manual page 9

When you installing AGP card, please make sure the follow
ing notice is fully understood and practiced. If your AGP
card has "AGP 4X notch"(show below), please make sure
your AGP card is AGP 4X (1.5V).
Do not use AGP 2X card (3.3V) in this motherboard. It will
burn and damage the motherboard due to Intel ® 845 chipset
can't support AGP 2X(3.3V).
Example 1: Diamond Vipper V770 golden finger is compatible with 2X/
4X mode AGP slot. It can be switched between AGP 2X (3.3V) or 4X
(1.5V) mode by adjusting the jumper. The factory default for this card is
2X(3.3V). If you install this card in GA-8IRX (or any AGP 4X only)
motherboards without switching the jumper to 4X mode (1.5V), it will
burn the motherboard.
Example 2: ATi Rage 128 Pro (Power Color) & SiS 305 golden finger is
compatible with 2X/4X mode AGP slot, but it supports 2X(3.3V) only. If
you install this card in GA-8IRX (or any AGP 4X only) motherboards, it
will burn the motherboard.
Note : Although Gigabyte's AG32S graphics card is based on ATi Rage
128 Pro chip, the design of AG32S is compliance with AGP 4X (1.5V)
specification. Therefore, AG32S will work fine with Intel 845 / 850 based
motherboards.
Before you install PCI cards, please remove the Dual BIOS
label from PCI slots if there is one.