Sooo, who wants to know what PLL the 1640 has? (the one we've been searching for)

Ok, so I've been searching for the PLL for a while in order to possibly get some setFSB support.
Anyway, today I was looking at the WLAN slot next to the southbridge just to scout outwhat I'm gonna do for my southbridge cooling mod. I decided to look under the piece of black plastic to make sure there was nothing too fragile under there and then I noticed that lovely crystal that says 14.3MHz on it, then right next to it there was a chip which looked awfully like a PLL. Pulling off the black tape thing disfigured some of the writing on the chip but I managed to key it into google correctly after a few tries.

Now the moment you've been waiting for. The PLL is an SL28541, there were three more digits on the end which I couldn't read but they don't seem to matter. It kinda irritates me that I looked so hard and even came to the conclusion that it had some sort of weird PLL instead, when it was actually just sitting in plain view under a thin piece of black plastic. If anyone could have a look on theirs, they might be able to figure out the other digits which would be good.

Here's the data sheet for it if you're wondering about pin mods Powered by Google Docs

 

just curious, but did you get to OC the CPU yet?

 

Unfortunately not. As of yet, setFSB doesn't support this clock generator and I'm also not sure as to whether I'd have to do some pin mods to make it so you can play with it. Given the choice, I'd really rather not have to do a pinmod unless it's essential since I made a southbridge heatsink which would require me to rip the whole laptop to shreds again just to get to the PLL.

If anyone is fluent in japanese then that might help, I briefly spoke to the guy who works on setFSB but I don't think he takes too kindly to westerners (or maybe japan has a different etiquette regarding requests or favours).

As of the moment though, I'm more interested in playing with the graphics voltages so that I can undervolt. I've had a bit of an idea though, usually laptop graphics undervolting is very risky in case you push it too low, but I propose to also lower the clocks in the BIOS too so that I know it will be stable. That way I can push the clocks back up again through software when I get into windows and find out a what point it's stable and work from there.

 

So has anyone asked this guy who makes SetFSB to support our laptop? I'm keen to try an overclock.

 

You can undervolt GPU with GPU bios.
I was interested in OCing the i7 on my 1645, since i7 on ASUS laptops can be OCed.
However after 1.5years of usage I first have to reapply thermal paste. It already gets too hot stock in summer

 

The latest setfsb does support SL28541BQC, you sure it doesn't work?