Yes it is.
8x agp, 8x is the speed of the agp port/slot.
So thats the kind of video card to look for, 8x agp.
How much did you want to spend and what part of the world are you in?
Pre sorted under 150$ us these are 256mb 8x agp, both Ati & nVidia.
This is your motherboard
GA-8INXP
1.
First AGP 8X Intel® chipset based motherboard
2. First dual channel DDR Pentium 4 motherboard supports up to 4GB memory size
3. GIGABYTE patented technology Dual Power System (DPS) design
4. Supports Hyper Threading Technology processor up to 3.06GHz or above
5. Integrated Silicon Image Serial-ATA interface for high speed storage devices
6. Integrated Intel® Kenai 32 Gigabit LAN network connection
7. Promise IDE RAID 0, 1 function plus UDMA ATA 133 support
8. Provides 6 USB 2.0 ports for high-speed connectivity
9. Integrated high quality 6-channel AC’97 audio with S/P-DIF function
10. GIGABYTE patented DualBIOS(tm) technology design protects BIOS from virus attack
11. Gigabyte unique EZ-Fix(tm) AGP slot and memory DIMM slot with Anti-Burn(tm) design