Faster agp2 card

Please clarify, if I may make a suggestion AGP is outdated and the best card you could find with support fot AGP is a Radeon HD 4650. They don't make anything better.

Is this your motherboard?
http://www.gigabyte.com.tw/Products/Motherboard/Product...

What is your CPU? The fastest AGP cards you can put into your computer are the HD 3850 and HD 4650, both of which will most likely be bottlenecked by your CPU so look into overclocking to get better performance.
http://www.tomshardware.co.uk/agp-radeon-overclocking,r...
Read through this article as it contains lots of information similar to your situation.

yes this is my mobo. The CPU is an athlon xp 3000+

It might be time for a new build, AGP is outdated, dead, and very slow. You might consider savign the money, and getting a new build.

ok.My mobo is old but i dont play the latest cames .my problem is that i buy
a fast agp card (xfx 6600 gt) and find that agp3 0.9 volt is not supported
only agp2 and agp3 1.5 volt, so looking for the best that my mobo support.

According to Nvidia, their boards that support AGP top out at the 7 series but good luck finding one, go for the 4650, it'll bottleneck the bus but it would work.