I have bought a Mainboard for £20 and it states that it can run a graphics card in these speeds: 1x 2x and 4x however my Sparkle G-Force 4 mx440 is an 8x card it works fine, only in 2x mode. any ideas on how i can make it go into full 4x mode? i have tried the Control panel settings in the display section but it only shows OFF and 2x. if anyone can shed any light on this i would be grateful, if its unsolveable i will go get a new mainboard with an N-Force Chipset. the mainboard i am currently using is a Syntax VIA SV266m model.
It's like Jester2K says, you have to enable AGP Mode (4x) in BIOS, its in the "Advanced Chipset Setup" menu, under the "AGP & P2P Bridge Control" sub menu. You must also have the AGP drivers installed from the VIA 4in1 drivers on the motherboard cd.