ABIT BM6: Celi II 533@800 runs; Celi II 1,1 GHz not ????

[b.cremer]

hi,

i use a ABIT BM6-Board, which can work together with celi II 533 (66 fsb) at 100 fsb = 800 mhz. now i bought a celi 1,1 ghz but the systém woun't start.

the BM6 is an old socket 370-board, build for celerons. i read the intel-data-sheed for celeron II and i think, the are no differences between pin-layout for celi's II with 66 fsb and 100 fsb. but if this is correct, why won't the system start?

and if there are some difference, how can i solve the problem? (f.e. lock up pins or connect pins together.....)

thank you for your help....

[Pinky]

I dunno if your system knows what a 11X multiplier is...

abit's site appears down otherwise I'd confirm for you whether there's a bios update you can use with that board...

go to here (http://www.abit.com.tw/eng/product/mb/bm6.htm) when they come back up...

[b.cremer]

hi pinky,

thank you for your answer. it make sense, that the multiplier could be the problem, because the last official bios-update for the BM6 (from aug. 2000) supports the celeron 600 (which works with 9,5 multi..). unfortunately I could not open your internet-link.

your last hint: could it be, that abit made an young bios-update for another abit-board, which is compatible with the BM6 and wich could solve the problem???? isn't that too dangerous???

greetings: bernd

[Yodums]

I believe your mobo doesn't support the high multiplier although it supports 66-100fsb.

[b.cremer]

hi,

sorry - i made two mistakes...

a) the celi 600 runs at multiplier 9x (not 9,5x)
b) i dindn't have the latest bios on my mobo, because i tried a former version 6 month ago..! during your hints i took the latest bios and the bios can now the multiplier brush up to 12x !!

nevertheless i tried the 1,1 ghz-celi with the same result: no signal from the pc... :-((((

may be, the proz. ist damage - i let it check from my dealer!!

[LutaWicasa]

First, Welcome to OCers.com :D Second. I don't beleive you'll be able to use the 1.1 GHz Celly on your BM6. There is a difference between the older Cel II's and the newer. The Cbo stepping procs didn't utilize the split plane voltage whereas the Cco's forward do. I understand the BM6 is not capable of handling the split Vtt, Vcccore voltages. On some of the old Abit BX slot 1 boards this could be overcome using a slotket, but the BM6 being a socket board must be able to handle this on it's own(which, unfortunately it can't)

Sorry :(

[Pinky]

Originally posted by LutaWicasa
First, Welcome to OCers.com :D Second. I don't beleive you'll be able to use the 1.1 GHz Celly on your BM6. There is a difference between the older Cel II's and the newer. The Cbo stepping procs didn't utilize the split plane voltage whereas the Cco's forward do. I understand the BM6 is not capable of handling the split Vtt, Vcccore voltages. On some of the old Abit BX slot 1 boards this could be overcome using a slotket, but the BM6 being a socket board must be able to handle this on it's own(which, unfortunately it can't)

Sorry :(

Learn something new everyday :).

[William]

Don't Intel CPUs "force" a multiplier even if it isn't in the BIOS? I have heard that they do, but aren't sure and this is a good of a thread to clear up.

I am with you Pinky, you learn something new every day!

[b.cremer]

i'll give the processor back to my dealer, wait for januar next year and will by a 1,2 ghz celi (tualatin) with new abit board (VH6T or ST&6).

greetings to you........

[Frankie]

I think that you can use that 1.1 Celi in that ur mobo if you make this modification --> http://www6.tomshardware.com/cpu/00q1/000229/socket370-to-coppermine-08.html

That page includes all what I did to my mobo and I like to point out, that I´m definetly no soldering expert! I just followed pictures and it worked fine! ;)

I have a ZM6 mobo, which is practically same as yours and running 850@1050. Cant go faster, because of my pc100 memory

[b.cremer]

hi frankie,

thanks for your hint. i read nearly the same in an old article of the german "PC Professionell" and i thougt, i should try this, BUT:
the article is written for a PIII-coppermine and i was not sure, if the 100mhz-celerons has the same pin-structure. specially the need to cut pin AM2 on my celeron could have bad.
but now i believe, this could be a way. by the way: did you install the two 330 ohm resistance? or not? and what did you with the pin AM2? cutting or shelter with "nail-color"?

it would be nice if could give me the last hints. you can answer diretly to: b.cremer@gmx.de
thanks...:cool:

[Frankie]

Well, if that celi1.1Mhz is same kind that celi850, which runs 100fsb, those instructions should do fine.

Nope, I did not installed those two 330 ohm resistance thingys, just that wire (which was shown in that page) and I used ordinary pin to extract that counterpart from mobo where CPU´s pins goes. Other way is that you use ordinary nail polish to isolate contact between cpu and mobo...I hope you undestod my instructions. You only need little bit courage, heh.

Actually, its quite easy and cheap way to improve your system. ZM6 is quite stable board. My cele 850@1050 is rock solid and it would go to 133fsb if I had better mems.

just ask if you have further questions

[b.cremer]

ok ok. that sounds not bad.
last question: what do you axactly mean wit: and I used ordinary pin to extract that counterpart from mobo where CPU´s pins goes..?

sorry, my english is a little bad..

thank you for your help....

[Frankie]

Well, here is an extract from Tomsharware link; "The next step can be rather touchy. We need to make sure that there's no connection between pin 'AM2' and the Socket. This is so because there's hardly a way to make sure that the pin AM2 of the socket does not have a connection to ground. The only way would be to actually drill the socket-pin out of the PCB. I doubt that this is a feasible solution. The alternative is to isolate pin 'AM2' of the actual processor"

So I used pin (I assume that you know what pin is) to "drill" the Socket hole (the hole in the socket where cpu´s AM2 pin goes). I moved the pin in the socket hole from left to right until that little part inside that connects AM2 pin and the socket came off. It works but it is quite slow way to isolate the pin from the socket. I suggest that you just try that nail polish trick first to isolate AM2 from socket itself. After you have put some nail polish to AM2 then just try it, if it works

Tom actully decided to just rip it (AM2 pin) off :D

[saphunt]

try this link.it work.did it on my board.
http://www.3feetunder.com/krick/bm6/