CPU:DRAM frequency setting

[negative_zero]

my motherboard manual has a section about CPURAM frequency settings though jumpers on the motherboard. what exactly does those settings do? and can they create booting problems if not set correctly? and also how do i know which setting is the best?

here's what that section says:

------------
1) CPURAM Frequency Setting (BSEL0, BSEL1)

This jumper sets the external CPURAM frequency ratio for normal operation. The default operates at 133:133 Mhz.

CPU DRAM BSEL0 BSEL1
133 133 [1-2] [1-2]
100 100 [1-2] [2-3]
133 100 [2-3] [1-2]
100 133 [2-3] [2-3]
------------

i know how to set the jumpers but dont know what is it used for.

thanks in advance.

- negative_zero

 

[lhgpoobaa]

These settings just let you run your ram and system bus at different speeds.
For example
an XP cpu + PC133 will run at 133:133
a Duron + PC133 will run at 100:133

Obviously 133:133 is the fastest, but should only be used for Athlon 'C' or XP cpu's, not Durons or Athlon 'B's.

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