Question about AGP and new P4 MB

[mike_in_katy]

The old motherboard on my NT 4.0 system fried. I'm replacing it with a new P4 (400 FSB) that requires 1.5volt signalling (4X) on the AGP.

Now, when I put in the new MB and fire it up with the old NT boot drive, what do I need to do to ensure that the card will be running at 1.5volt 4X? I just got a new graphics card - ASUS V7100 Geforce2 MX 32Meg.

I figure on booting in safe mode (VGA mode), installing the new graphics drivers, then rebooting in 1024x768 mode.

Will the MB and the Graphics card figure this out or are there soft settings I will need to do? Anything in the BIOS?

[Rocketmech]

The AGP4X slot on i845 and i850 motherboards is notched so that 3.3Volt only cards cannot be inserted. A problem arises where older AGP cards exist that have the correct notch( mostly universal slots), but do not comply with 1.5Volt signalling, asking for 3.3Volts from the motherboard instead. These cards will short the Vddq and VCC3.3 lines and permanently damage the i82845 Memory Controller Hub, rendering your motherboard useless.
To follow the AGP 2.0 spec
4X - 1.5v
2X - 1.5v + 3.3v
1X - 1.5v + 3.3v
Your new graphics card - ASUS V7100 Geforce2 MX 32Meg is Full 4x/2x AGP . Therefore it will have the 1.5 signaling the mobo requires. So, just install the card as you suggested.

You will need to verify that 4x is enabled in both the MB bios and V7100 settings.