400 fsb on rev1.04

Does the new bios released for the A7n8x support 400 fsb bus i was a bit confused but i think it does. and im not talking about overclocking i mean with a barton proccessor that supports a 400mhz FSB.

found this so looks as though it does









: : New BIOS for A7N8X Series to Upgrade to Athlon XP 3200+ with 400 FSB

Current owners of ASUS A7N8X series motherboards are in luck. ASUS now offers a new BIOS for these popular motherboards, based on PCB 1.06 or earlier version, to support AMD's latest Athlon XP 3200+ with 400MHz FSB. Download the BIOS from

A7N8X series motherboards based on the PCB 2.0 support the Athlon XP 3200+ and 400MHz right out of the box.

New BIOS for A7N8X Motherboard

New BIOS for For A7N8X Deluxe Motherboard

ASUS Motherboard CPU Support List

Note:
-The new BIOS is not compatible with A7N8X series motherboards with PCB 2.0.
-PCB versions are printed clearly next to the model name between the PCI slots.

ive just flashed it now working fine....even says im in single channel mode


going to save my pennies for a xp3200 now

you all need to get to 400MHz FSB, it really is cool ^_^

Only works on some boards. I have a rev 1.04 and I can't make it into windows at 200 even though I've clocked the cpu down to default via multiplier.

TC said:

Only works on some boards. I have a rev 1.04 and I can't make it into windows at 200 even though I've clocked the cpu down to default via multiplier.

Click to expand...

Try slowing down memory timing. Try adding arctic silver under the NB heatsink. Try adding a heatsink to the SB. You sure you got PC3200? You set the FSB/RAM to 100 % sync? Try changing the FSB jumper on the mobo to 100 MHz instead of 133.

I have a 1.04 and it runs 200 MHz FSB since I got it, on 1001.G, 1002.1 and now 1004.

Done all of those things - the system will only run 200 if I put a fan on the northbridge. My point is that Asus is calling this a fix for stock boards, and few stock boards will run 200 in single channel, let alone dual channel.

Im not talking about overclocking a chip thats not meant to be running at 400mhz im talking about proper barton 400 mhz fSB chips has anyone tested them.

The only thing different about a barton that's being sold as a "400" is the multiplier. If the board can't run 200 fsb the chip isn't going to make any difference.

TC said:

The only thing different about a barton that's being sold as a "400" is the multiplier. If the board can't run 200 fsb the chip isn't going to make any difference.

Click to expand...

TC has a valid point. They did up the multi to achieve a higher speed.

Well the BIOS setup now has 200 available default on the menus. Must mean it can support 400 FSB. Also i noticed my mobo temps were 10c lower wih 1004