On Wed, 22 Oct 2003 09:36:25 +0000, TT wrote:

"Wes Newell" wrote in message
news
On Sat, 18 Oct 2003 23:09:20 +0000, TT wrote:

Just purchased a AthlonXP 2400+ for an old Soltek SL75KAV
motherboard. Happily running an AthlonXP 1800+ for over a year on
this board. This was the last upgrade of CPU this motherboard could
handle (as it only has 266 FSB and uses SDRAM). I updated the BIOS
before updating the chip as per Soltek's website to allow for 2400+
chip on this M/B. Put the new chip in and after clearing CMOS it
boots up noting "Unknown CPU type 1700+". No amount of re-flashing
the BIOS both back to previous version and the latest version will
get my PC to boot noting that it has the new 2400+ chip in it. M/B
has dip switches for multiplier and FSB settings, but as I am not
o/c'ing this chip, I don't see why I should play with these? Bought
the chip from retailer in an AMD box with AMD fan. Should I take
the thing back and get a refund?

No. You need to set the multiplier and FSB to equate to the speed you
want.

The mutilplier in my manual is maximum 12.5 and the BIOS upgrades have
never noted any new pin selection for upping the multiplier at all.

So this means your board only supports 4 of the 5 multiplier bits. Common
for older boards. The 2400+ uses the 5th bit, so anything that you set is
changed by the cpu since it's got the 5th bit (8x) active high.

Makes me wonder why they place BIOS upgrades on the web site that say it
will allow 2400+ on the motherboard if the mutiplier cannot go high
enough. I ended up taking it back for a full refund.

Only MB's that properly support all 5 multiplier bits can set the
multiplier accurately. See Multiplier Cross Ref. in link below. Also check
this out.

http://www.beachlink.com/candjac/TbredDecode0.htm#Table

Since you've already returned the 2400+, I guess it doesn't much matter,
but it will work in your board. You just have to know how to set it up.
And the Unknown CPU Type doesn't matter. That's just cosmetic, meaning it
doesn't know what it is. Here's what the one in the sig line shows up as.

processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : Unknown CPU Type
stepping : 1
cpu MHz : 2400.188
cache size : 256 KB

--
Abit KT7-Raid (KT133) Tbred B core CPU @2400MHz (24x100FSB)
http://mysite.verizon.net/res0exft/cpu.html