The latest 4in1 drivers (4.28) install viaagp1.sys to the winnt/system32 directory, and the MS via patch installs viaagp.sys there too.

What is the difference between these two? I've installed 4.28 without the MS patch and my system is rock stable. Checking the device manager, under CPU to AGP Controller, under driver details, shows that it is using viaagp1.sys. I bet if I install the MS patch it will change to the MS provided viaagp.sys.

Is it fair to say install one or the other, but not both?

I'm happy with my config, but I thought i'd open this discussion for those who dont have stable systems.