Direction needed, CPU settings in BIOS

[limner]

Just built a new box--
Biostar M7NCG400 board, AMD XP21000+ CPU, 512m PC2700 RAM

Default settings in BIOS only recognizes CPU as XP1500+, but the
machine will boot to Windows2000.

"Optimized" settings in BIOS recognize CPU as XP2100+, but hangs after
POST.

I think I need to retain the default settings, but manually configure
the CPU in the BIOS. I've never done this before; manual doesnt
explain much. In the Phoenix-Award setup, there's a field for CPU
ratio, which I gather is what I need to be looking at.

Can anyone give me a newbee explaination of what to do, or point me to
a link?

Many thanks for any insights.

 

[Anon]

Just built a new box--
Biostar M7NCG400 board, AMD XP21000+ CPU, 512m PC2700 RAM

Default settings in BIOS only recognizes CPU as XP1500+, but the
machine will boot to Windows2000.

"Optimized" settings in BIOS recognize CPU as XP2100+, but hangs after
POST.

I think I need to retain the default settings, but manually configure
the CPU in the BIOS. I've never done this before; manual doesnt
explain much. In the Phoenix-Award setup, there's a field for CPU
ratio, which I gather is what I need to be looking at.

Can anyone give me a newbee explaination of what to do, or point me to
a link?

Many thanks for any insights.

Turn up your FSB or CPU frequency, but leave the CPU ratio alone. -Dave

 

[Nigel Bywater]

Hi
When I had a similar problem, some said change the setting in the bios and
some said look for jumpers or switches on the mother board.
The answer was to set the bios to the correct speed AND also 5 little
switches on the mainboard.
Nigel

 

[DS]

In the bios "Advance chipset settings" set the FSB to 133

 

[somebody]

Just built a new box--
Biostar M7NCG400 board, AMD XP21000+ CPU, 512m PC2700 RAM

Default settings in BIOS only recognizes CPU as XP1500+, but the
machine will boot to Windows2000.

"Optimized" settings in BIOS recognize CPU as XP2100+, but hangs after
POST.

I think I need to retain the default settings, but manually configure
the CPU in the BIOS. I've never done this before; manual doesnt
explain much. In the Phoenix-Award setup, there's a field for CPU
ratio, which I gather is what I need to be looking at.

Can anyone give me a newbee explaination of what to do, or point me to
a link?

Many thanks for any insights.

The "CPU ratio" is probably the 'multiplier', forget that just for a
moment.

Somewhere in the bios there is an external clock. This may be called
(wrongly) FSB, (better) FSB clock, CPU clock or simply external clock.
This is seemingly always (?) set to 100 by default, when the board is
new.
For your XP2100+, it should be set to 133.

The FSB will run at 2X this speed, that is 266MHz.

Your CPU will run at the 'multiplier' X 133. The 2100 runs at 1.73GHz
so the multiplier should be set to 13 (13 X 133 = 1730).

Finally, just for your information, memory bus is a different thing
than FSB. The FSB connects the cpu to hardware, such as the
Northbridge. The Northbridge contains the memory controller, which
connects to ram.
Memory bus frequency is also different from DDR memory speed (double
data transfer). The frequency should be half of your DDR speed. So if
you run DDR266, your memorybus should be running at 133MHz.

Leave everything else to 'normal/standard/default', 'auto' and 'dspi'.

ancra

 

[limner]

Many thanks.
Been trying to find a clear explaination about all this for quite
awhile.
Everything going cool on my box thanks to you.

cheers!

 

[somebody]

Many thanks.
Been trying to find a clear explaination about all this for quite
awhile.
Everything going cool on my box thanks to you.

cheers!

That's nice of you.
We do like it, when posters post back and tell us how it went.
Good luck.

ancra