HELP: A7v266-E with Mobile Barton Athlon XP 2500+

[anonymous]

Does anyone have any experience using the new Mobile Athlon XP 2500+ on this motherboard?

Supposedly, the mobile chip is a drop replacement of the desktop version. Since the
motherboard supposes to support up to 2600+ speed, this should work.

Unfortunately, it still doesn't work for me. My motherboard's BIOS reports a highest
multiplier of only 12.5x. I tried this with both the 1011 and 1015B2 BIOS. How do I get the
higher CPU multipliers? With a FSB of 133, it is nowhere near the 2500+ mark.

Should I have gotten the regular Athlon XP 2400+ instead?

Thanks.

 

[Paul]

Does anyone have any experience using the new Mobile Athlon XP 2500+
on this motherboard?

Supposedly, the mobile chip is a drop replacement of the desktop version.
Since the motherboard supposes to support up to 2600+ speed, this should
work.

Unfortunately, it still doesn't work for me. My motherboard's BIOS
reports a highest multiplier of only 12.5x. I tried this with both
the 1011 and 1015B2 BIOS. How do I get the higher CPU multipliers?
With a FSB of 133, it is nowhere near the 2500+ mark.

Should I have gotten the regular Athlon XP 2400+ instead?

Thanks.

A comment I read on these things, says they only do the low multipliers.
You need a motherboard that supports high FSB to have fun with them.
For example, here is a post on amdmb.com:

"My 2500 showed up earlier today. So far I have done 10x200 1.5v,
10x220 1.6v, 10x 230 1.65v, 10x240 1.75-1.8v, 11x220 1.7v.

11x200 runs fine at 1.55v

max oc so far 2420 at 1.8v"

so something like a A7N8X might be a good candidate or one of the
later Via chipset boards that supports a higher FSB. You'll need
memory to suit the high FSB as well, if you are keeping the FSB
and memory clock in sync. If you are starting with a motherboard
whose normal FSB clock signal is 133MHz and expect to get to
240MHz, think again

What is funny about the posts I've read so far, is there seems to
be a vast feeding frenzy, without a lot of tech knowledge about
how to get the other multipliers etc. I've yet to find some posts
with a little more meat to them than, "Yup, got mine..."
Maybe the participants all plan to speculate on them on Ebay.

If you do manage to find a link on how to wire mod for a high
multiplier, post it! For example, there is mention of Powernow
being part of the problem, but I cannot find any tech info
on Powernow either (like, on the AMD site).

Good luck,
Paul

 

[anonymous]

Thanks Paul. It's too bad that the higher multipliers are not obtainable with this
motherboard.

Obviously, a new motherboard would do. The most overclockable socket A motherboard is the
Abit NF7-S v. 2.0. People routinely getting 250x12 @ 1.75v or higher with this board. I
might not be as aggressive, but 2.2GHz will be nice. I have two reasons why I didn't swap
out the motherboard: (1) I have an OEM version of Windows XP -- Microsoft would not let you
reactivate it on a different motherboard. (2) I have a RAID-0 array with tons of data.
Moving to another board requires rebuilding of the array.

In the meantime, I was hoping that the CPU upgrade would hold me over till Socket 939 settles
down. It is silly to get Socket 940 anything these days, considering 939 is just around the
corner. Even if most motherboard prototypes that I have seen do not do DDR2, they will have
a dual-channel memory controller that uses unbuffered memory. I can build a pretty nice
machine around that. Forget about Socket A.

With this A7v266-E motherboard, the highest multiplier seems to be 12.5x. I have overclocked
the FSB to 140MB. It seems pretty stable so far. Now, the CPU only runs at a disappointing
1.75GHz, while I know it should be able to do 2.5GHz+. Oh well.