Tualatin
CPU on i440BX chipset based mainboard
Tualatin
CPU on i440BX chipset based mainboard I wanted to put a Tualatin CPU on my ABIT BX motherboard but BX chipset isn't Tualatin ready
I knew that there were Powerleap adapters but they were expensive and I couldn't find them
A few days ago I noticed about some modification to the cpu pinout that could let me to fit this chip on my motherboard without using any adapter.
So I worked hard to find on the web and on HW forums any information about this mod.
When I took the know how to do this job I began working around my new Celeron 1.0A and here you are the results ....
RED pins must be insulated , they shouldn't be conncted to the socket
BLU pin (AK26) must be connected to the RED called AK4 directly on the CPU
GREEN pins must be connected tohether to give an appropriate voltage to the core
I did not wanted to modify my motherboard so i worked only on the CPU
First i pulled off the red pins and took away the slug upon the core to get a better temperature :
Then I put it on the mainborad directly , because i red that it could work without other mods.
It booted! GREAT! the default voltage was 1,45v with no pin adjustement so i try keeping it so
But it was instable, I coludn't go into windows so I decided to connect also the other pins using conductive silver paint :
I let it dry and then i gave a second hand of paint to be sure to obtain a good conductivity (used a tester)
It was a hard and sharp job !
I had to use a lens and a thin wire as a brush, and prayed to not waste the cpu connecting also the wrong pin ......
Then i connected Vid4 (AK36) and Vss (AM34) in the same way
Ii decided to cover again the core with the slug to protect it from breaking
and used some silver compound on the CPU core and engine black sealant as glue all around ,to dry it in the right way I took an old slocket and
a strong heatsink clip with a copper base to push it firmly:
After this treatment it looked as a original never opened CPU !
Now the system with the modified CPU works stable and fast, after connecting also Vid2 to Vid1 (because Vid1 is yet connected to Vss)
default core voltage changed from 1,45v to 1,65v and the max voltage in bios changed from 1,7v to 1,9v.
(Updated on March 15th 2002,after lapping the CPU slug till it become a mirror, note SETI client running in background...)
All I wrote in these pages is what i could learn thanks to the great work and care of many guys in a few HW forums,
here you are some links where i found very useful tricks about the Tualatin pin modding :
http://forum.oc-forums.com/vb/showthread.php?s=&threadid=67417&perpage=30&pagenumber=1
Other links are listen in the pages I linked above
This is only what I did on my system , not a guide to "how to put a Tualatin cpu on a system not Tualatin-ready"
I don't know if it works on other motherboards or on other chipsets,don't ask me for this , I simply don't know!
For further informations refer to the links i gave above.
have fun!
Cheers
Andrea
belinassu@libero.it