THE BX MOD

< wersja polska >

21.11.2002
COMPLETED


Intel made new series of celeron processors. New core, called tuatalin is made in 0.13um technology. This technology gives great ability to overclock new processors. Unfortunatelly they use new fc-pga2 package and 1.45V vcore. This makes them uncompatibile to all older (and newer) mainboards. Fortunately intel did not forget about smart peoples, so they can make some modifications to their ol hardware to fit new hi-tech requrements ;)
BX MOD allows to run tuatalin processors on most BX-based mainboards.
I have ASUS P3B-F slot1 i440BX mainboard working with boxed vesion of 1GHz tuatalin. I managed to overclock it to 1.2GHz. That is not best result, because afaik people get over 1.4GHz...
Here I would like to thank my friend Erio, that told me about this mod and helped out when I got despered thinking thats imposible! THANK YOU ERIO!!!

    Goals of this project:
  • run intel celeron tutalin processor on old slot1 mainboard
  • save some money / old, trusted, good piece of hardware ;)
  • fun =)

21.11.2002
The difference between fc-pga2 and fc-pga packages isn't big. Four pins that were grounded in fc-pga have some functions in fc-pga2. In order to tuatalin run properly, those pins have to be isolated and then two of them have to be shot-circuited. This will bring fc-pga into fc-pga2 :) Some people do the trick by removing ping from processor. I've decided to modify a slot1<->fc-pga adapter so as not to loose 3-years warranty :]
Second thing is a vcore. Old celerons used 2V, newer coppermines used 1.7V. Tutatalins can run on vcore between 1.475V and 1.65V. There are some pins called VID0-VID4 that selects vcore voltage the mainboard should give to the processor. By connecting those pins to Vss (low logic state) or Vcc (high logic state) you select the vcore. If you use good slot1<->fc-pga adapter with voltage regulator, some mainboards (mine for example) can gives you ability to select vcore in SETUP program. You dont need to touch VUD0-VID4 pins then :)
    You should step by step do the following:
  • Remove 3 red-marked pins from processor or their equvalent from fc-pga socket

    If you remove pins from microprocesor it should look similar to this:

  • Connect PWRGD pin to VttPWRGD as it is shown on first picture
  • If you can't select vcore on adapter or in SETUP you should set apropriate voltage by VID0-VID4 pins. The first picture shows how to get 1.65V vcore. From table below You can get other values. Be very carefull with setting vcore voltage as it can damage You procesor! The maximum should be 1.65V
  • And that's it! Have fun! But be extremly careful and patient - this can make harm to your machine, and ofcourse I will not take any responsibility for that :)
FOTOS







23.12.2002
I have managed to build second converter using microstar's MS6905 v2.0 slot1<->fc-pga. It is working on SOLTEK SL-67EB mainboard with tualatin 1.0A and 1.3A.

By changing AGP bus speed to 2/3 FSB, I managed to run my tualatin 1GHZ on 150MHz system bus, that gave me 1500MHz CPU speed!!! But this caused problems with IDE controller ;) So I stayed on 1333MHz, 133FSB and 33PCI




BX MOD
THE BX MOD

< wersja polska >

21.11.2002
COMPLETED


Intel made new series of celeron processors. New core, called tuatalin is made in 0.13um technology. This technology gives great ability to overclock new processors. Unfortunatelly they use new fc-pga2 package and 1.45V vcore. This makes them uncompatibile to all older (and newer) mainboards. Fortunately intel did not forget about smart peoples, so they can make some modifications to their ol hardware to fit new hi-tech requrements ;)
BX MOD allows to run tuatalin processors on most BX-based mainboards.
I have ASUS P3B-F slot1 i440BX mainboard working with boxed vesion of 1GHz tuatalin. I managed to overclock it to 1.2GHz. That is not best result, because afaik people get over 1.4GHz...
Here I would like to thank my friend Erio, that told me about this mod and helped out when I got despered thinking thats imposible! THANK YOU ERIO!!!

    Goals of this project:
  • run intel celeron tutalin processor on old slot1 mainboard
  • save some money / old, trusted, good piece of hardware ;)
  • fun =)

21.11.2002
The difference between fc-pga2 and fc-pga packages isn't big. Four pins that were grounded in fc-pga have some functions in fc-pga2. In order to tuatalin run properly, those pins have to be isolated and then two of them have to be shot-circuited. This will bring fc-pga into fc-pga2 :) Some people do the trick by removing ping from processor. I've decided to modify a slot1<->fc-pga adapter so as not to loose 3-years warranty :]
Second thing is a vcore. Old celerons used 2V, newer coppermines used 1.7V. Tutatalins can run on vcore between 1.475V and 1.65V. There are some pins called VID0-VID4 that selects vcore voltage the mainboard should give to the processor. By connecting those pins to Vss (low logic state) or Vcc (high logic state) you select the vcore. If you use good slot1<->fc-pga adapter with voltage regulator, some mainboards (mine for example) can gives you ability to select vcore in SETUP program. You dont need to touch VUD0-VID4 pins then :)
    You should step by step do the following:
  • Remove 3 red-marked pins from processor or their equvalent from fc-pga socket

    If you remove pins from microprocesor it should look similar to this:

  • Connect PWRGD pin to VttPWRGD as it is shown on first picture
  • If you can't select vcore on adapter or in SETUP you should set apropriate voltage by VID0-VID4 pins. The first picture shows how to get 1.65V vcore. From table below You can get other values. Be very carefull with setting vcore voltage as it can damage You procesor! The maximum should be 1.65V
  • And that's it! Have fun! But be extremly careful and patient - this can make harm to your machine, and ofcourse I will not take any responsibility for that :)
FOTOS







23.12.2002
I have managed to build second converter using microstar's MS6905 v2.0 slot1<->fc-pga. It is working on SOLTEK SL-67EB mainboard with tualatin 1.0A and 1.3A.

By changing AGP bus speed to 2/3 FSB, I managed to run my tualatin 1GHZ on 150MHz system bus, that gave me 1500MHz CPU speed!!! But this caused problems with IDE controller ;) So I stayed on 1333MHz, 133FSB and 33PCI