Well, analyzing the photos 7 and 9 (the red arrow marking the 2nd pin from top left of the PLL and following the copper foil this pin is linked to A. Similarly, the green arrow marks the 3rd pin, which is linked to C), I'd say that the 1K resistor connects the points A and D, to turn A a high potential too (just follow the copper foil from the PLL pin to A point at photo 7 and you will notice a soldering drop, where the resistor is soldered).

I think I have helped, please comment. Thanks.

Hi mate,

I do not really see where do you attach it, can you take some more pictures of the attached 1K resistor area, please???

Cheers

Has anyone done this mod? I want to know whether it's worth the effort. How much is the performance boost? Please let us know.


Another thing, since we are talking about OCing laptop here, I was thinking of mounting a small switch to control the voltage on those pins. What I am thinking is, if the OCing actually improve the performance, I would use OCed @ home with extra fans on it and simply turn off the OCing when I am travelling with batteries.

Just looking at the picture OP posted, it seems like the reference voltage changes the PLL setting, so theoretically it should be fine to wire a switch somewhere in the housing, which will be a little more work..

Theres no need to make a hardware switch. There are plenty of software solutions to limit the maximum clockrate on battery.

That's right! I am not familair with all these neat software. Anyone still using their moded D600? What's the combination of RAM card you are using?

1GB PC2700 + 256MB PC2100?
512MB PC2700 + 256MB PC2100?
256MB PC2700 + 256MB PC2100?

Please let me know! I want to try this mod and I need to get a PC2700 card.


Thanks,


Mike.