UPDATE FEB 10,2005
There is a sticky thread labeled D+ MOD INSTRUCTIONS PAGE that contains the detailed instructions for performing the mods listed in the post below. Included are links to a photo
of the work area and to the Soyo FTP site for bios downloads. There is also a link showing
how to perform a socket pin mod for getting access to higher multiplier values when using
mobile cpu chips after you perform the mods.
D+ Mod Instructions Page:http://forums.pcper.com/showthread.php?t=377836
Please continue to use this thread for any further discussions in order to keep the info
in one place.
Original post starts below:
I have been using the D+ with a 2400+ cpu chip for the past several weeks with a beta bios that I obtained from another kind Soyo user. I just flashed to bios version 2BA6 and all is working fine. I see that many people are having trouble with the new Tbred chips and the D+ board. Why some work and other do not work I can't answer as there are too many system variables.
Here are my system specs:
Soyo K7VXA Dragon + board serial number V201 041785
AXDA2400DKV3C AIUCB 0239CPBW 2400+ Tbred B cpu chip
(2) Kingmax 2400 ram sticks
Enermax EP 465VE power supply
How did I get this to work? Before I detail the steps I took to get this working, I will state that I CANNOT guarantee that this will work on ALL D+ motherboards and I will NOT be held liable for any damage caused by these changes. With that said here is how I got the Tbred B 2400+ chip to work on 4 different K7V D+ boards:
1. Remove capacitor C130 from the motherboard. This was suggested by a Soyo tech months ago to some one else I was in contact with on this subject matter. This is a small surface mounted part and requires some soldering skills to remove successfully.
2. Added a cap to the empty location at ELC28 (1500mfd-10 volt 105 degree C. This change alone made my board more stable with different makes of ram.
After performing the above mods, I started with a 1600+ MP cpu chip and flashed to the new bios. Then I removed the old cpu, and installed the new 2400+ chip.
I then cleared the cmos using JP5 and removing the ATX power cable from the motherboard, counting to 10 and reconnecting the ATX power cable. At power on, the unit started and I went into bios setup and reset my parameters. Thats it.
One other thing, on the POST system configuration screen (first one that appears) the new 2400+ chip is NOT IDed correctly: CPU TYPE - unknown cpu type"; "CPU ID - 0681"; "CPU SPEED - 2000mhz". The last 2 are correct for a B version Tbred chip and Sandra and CPU ID both show the chip as a 2400+ with the correct model and stepping numbers. I would venture a guess that Soyo did not include the 2400+ chip string in the latest bios version. I have not tried any other Tbred chips except the 2400+ so don't ask. Also, i modded the boards and then used the new 2400+ chips so I don't know if they will work without the mods. I hope this helps some of you and good luck.