A7N8X CPU Frequency

  • Thread starter Thread starter Ron
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R

Ron

I am using a 2600+ CPU with DDR3200 memory in slots 1 and 3. The bus
speed is 166 MHz, the core voltage is 1.65, the memory speed is 'by
SPD,' and system performance is set to aggressive. If the frequency
multipler is 12.5, the CPU frequency is 2.08 GHz. If the multipler is
13.0, the CPU frequency is 875 MHz. What is going on, and what am I missing?

Should I change any of the memory parameters to improve performance?
 
That would either mean the FSB is dropping to 67mhz or the Multiplier is
interpreting 5 rather than 13. I'm sure you figured that. Why is it doing
that? Make sure you're setting everything manually OR try the automatic
settings. The bios could be freaking out and might need to be reflashed or
flashed to a newer version. With the behavior that they're showing I'd be
mighty careful upgrading bios and might consider taking it to a professional
to be on he safe side. I can say that I've never heard of that before.

Hopefully you'll get some more definitive responses here.
 
My A7N8X & Barton 2500+ exhibits identical behavior. Research suggests
that, at least on this motherboard, the multipliers are "locked" within a
range of 5 to 12.5, for any chip whose "proper" multiplier is in that range.
For chips above that range (2800+ and up?) multipliers below 13 are locked
out...

Again, this is NOT the result of extensive testing on my part, but rather
regular bottomfeeding on this NG...

HTH,
Gary
 
Ron said:
I am using a 2600+ CPU with DDR3200 memory in slots 1 and 3. The bus
speed is 166 MHz, the core voltage is 1.65, the memory speed is 'by
SPD,' and system performance is set to aggressive. If the frequency
multipler is 12.5, the CPU frequency is 2.08 GHz. If the multipler is
13.0, the CPU frequency is 875 MHz. What is going on, and what am I
missing?

Should I change any of the memory parameters to improve performance?
Click to expand...

Research 5th bit of the multiplier - this motherboard does not support it.

However, as previously mentioned:
FSB 200MHz
Multiplier somewhere between 10-12
Memory 100% of FSB

Ben
 
I'm kind of surprised by this. I have a 2600+ (333) and I can hit these
(13+) multipliers. This is on an A7V8X-x so I don't know if that makes a
difference.
 
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