108mhz FSB mod for 600X

[cmarti]

I have upgraded the cpu from PII 300mhz to PIII 500mhz and also did the 108mhz fsb mod to my 600E which now is running at 540mhz.

I am VERY pleased with the results, and now i am looking to find if it's possible to do also the fsb mod to my 600X i been looking everywhere but i cannot find if that is possible, and now the question....

Do anybody knows if the 8% or 108mhz fsb mod can be made to a 600X?

Thanks..

Carlos.

[cmarti]

Ray,

Can this be posssible? I have searched nore and still have not find nothing.

[rkawakami]

I'm not sure. I have not done any tinkering with the timing system in any of my laptops. The only thing I have done in the way of increasing the CPU speed is to simply swap out some T23 CPUs (going from 1.13G to 1.2G) and a 600E (366Mhz to 400Mhz). Not a whole lot of difference, I know. But it's an easy thing to do and it doesn't require overclocking any components. I suppose my desire to leave the timing system alone comes from my test background.

[cmarti]

Thanks for the reply!

I have talked to katch from the wims bios forum but he cannot remember if anyone has done it, also i am trying to reach sharedoc to see if he know how and if it can be done.

Carlos.

[cmarti]

I just got an email fron sharedoc and he told me that..

The basic problem is that 600X has different clock generator chip whose data sheets are not available anymore in the internet.

Does anyone has that datasheet?

[rkawakami]

Do you have the part number of the clock generator chip? If you can't get it right away I can probably look at a dead 600X motherboard I have laying around here somewhere.

Given the part number I might be able to look for a cross-referenced device in some books I have at work.

[cmarti]

Ray,

I don't have the part #, i would have to open the 600X to get it.

It would be more than nice if you get from the dead mobo, if you cannot find the dead mobo i will open the 600X to get it.

It would be interesting to have the 600X running at 108 or + FSB.

[rkawakami]

Do you have the part number and manufacturer of the clock generator in the 600E?

Also, where on the 600E is this chip? The 600X is similar enough that it will probably be in the same location. I'll go dig out my dead 600X motherboard but if it's on the CPU module, I'll have to take one of my systems apart.

[whizkid]

I have a dead 600X systemboard out. I'd be happy to put up some hi-res scans of the board if that would be useful.

[cmarti]

Do you have the part number and manufacturer of the clock generator in the 600E?

Also, where on the 600E is this chip? The 600X is similar enough that it will probably be in the same location.

Ray,

I contacted Sharedoc from the wim bios forum and i asked his assistance.

I hope he can help us on this, he is a great guy.

[rkawakami]

I have a dead 600X systemboard out. I'd be happy to put up some hi-res scans of the board if that would be useful.

You could do that if you have a good hosting service. I've done the same for a T23 motherboard. Haven't got around to documenting the 600X since I only use a couple of the systems. I did find my dead 600X motherboard this morning and quickly tried to find something like the PCK2000 chip (which I believe is the one that gets the mod in the 600E). Didn't find anything that looked similar so maybe the 600X uses a totally different solution?

[cmarti]

Ray,


Here is some more information;

FSB mod on a IBM 600X

[rkawakami]

Whew, finding the datasheet for the C9714 clock generator was easy compared to finding the actual part! The datasheet is available from here:

http://www.alldatasheet.com/view.jsp?Searchword=c9714

I spent over an hour looking for the part on the motherboard. At first I thought that maybe a different part was being used so I entered at least a dozen part numbers into the alldatasheet.com site but didn't find anything that could be a clock generator. Then I noticed a couple of insulating sheets of plastic around the MiniPCI area. I peeled back one piece and there it was:

Picture of 600X showing IMI C9714 (158KB)

This view is of the bottom side of the motherboard with the I/O ports at the top and the memory slot at the bottom.

Finding the datasheet is the good news. The bad news is that looking at the pin descriptions it appears to be a little bit different than the PCK2000(M?) device. Pin 16 is the selection between 66Mhz and 100Mhz. The adjacent pin (#15) is marked as VSS, which is ground. It may be that it is an actual ground pin OR it might be like the PCK2000 device where it is a select pin that in normal operation must be grounded. I suppose the only way to find out is to cut/lift pin 15 and connect a pull-up resistor (say 5K-20K; just a guess) to pin 19 (VDD).

Note: I cannot guarantee that this will work as an overclocking solution. Nor can I guarantee that damage will not occur to your motherboard.

From looking at the PCK2000M datasheet, the SEL pin (16) should normally be tied to power. Since the 8% FSB mod is supposed to be done by attaching a 1K resistor near the CPU module connector (which is on the opposite side of the 600X board where the IMI C9714 chip is), I would imagine that what is really happening in the 600E is that the PCK2000M SEL pin is being grounded. That would place the device in "test mode", according to the PCK2000M datasheet. No such mode is evident from looking at the C9714 datasheet.

In short, I cannot say for sure that it is possible to overclock the 600X motherboard in a similar manner (adding a resistor) as the 600E.