talking about MB drivers.....also I found this
Category:
AGP, display & 3D problems
Question:
My VIA chipset and my GeForce video card support 4X AGP. I have 4X AGP set in BIOS but will only run at 2X AGP. Help!
Answer:
2 things may cause this.
1)If you are using an ApolloPro133A chipset the BIOS may be providing the wrong chipset information to the operating system and identifying it as an ApolloPro133. Nvidia drivers automatically set 4X AGP to off. This registry patch will correct this.
2) If you have used a tweaking program for your GeForce card it may have set your VIA chipset 4X AGP to off in the registry. Download and run this patch to correct it.
I'm using the ApolloPro133A chipset......I downloaded the patch, restarted still 2x
For good mesure i DL the other patch, restarted.....still 2x