PLL Pinmod Overclocking Methods and Examples

umm where can i find the pll? and after going into diagnosis in setfsb how do i produce a dump of the PLL registers?

 

PLL is on MotherBoard. simply click on "Get FSB"(upper right) to dump "PLL Control Registers". But FIRST ya need to select a "Clock Generator"> click on that arrow to expand all PLL's, im not sure which pll it is? anyone know?
Dell has manual-Google "dell studio 1535 service manual" if ya decide to pull apart to see PLL

 

OMG! I CANT FIND THE PLL been looking at my mobo for like 30min
where is the pll?? Does my mobo even have a pll?
EDIT: it seems like i have to remmove this metal thing thats covering the mobo on some parts. . The question is what is this for?? after taking it out, do i have to put it back in? its just annyoing to remove this everytime i want to look at the mobo

 

That could very well be your heatsink. If you do not have any thermal paste handy, removing it and setting it back without reapplication will cause your computer to run hotter than it normally does. Reapplication of thermal paste without correctly knowing how can also cause issues.

In some cases, you may be able to remove the motherboard completely from the laptop enclosure without having to remove said heatsink... this takes patience and remembering where all the screws went (anywhere from 30 to 60 screws). I had to do this for my acer 5920g just to view a small segment of the board beneath a plastic separator for my hard drive.

Your PLL chip will most likely be beside a sort of 'crystal' as viewed in the first post. Be sure to read it through * thoroughly.* Again, as an example, I had to view nearly *every* ship on my board and record the maker and numbers of each, as there was not a crystal beside my PLL chip. I referenced the site linked on the main post to see if any of these matched to find my PLL number and manufacturer. (ie: just because you find a realtek chip on your board, does not mean this is your PLL chip. This could just be your sound controller.)

Unfortunately, until you have the PLL number, you cannot use setFSB to grab the information from it, as it may read the diagnosis dump incorrectly.

Good luck.

 

+1. PLL tends to have a crystal above it to provide an accurate reference reference 14.318MHz. The crystal and PLL tend to be mounted quite close to the CPU to ensure a clean signal.

 

i know what a heatsink is im not that dumb. Its this metal plate around the mobo to hold some of the wires and stuff. Anyways as i said before, i have a spare mobo for this laptop but with an onboard graphics instead. If i find the pll on that mobo, will it be the same as this one?? I would take pics but my camera is really bad quality when taking pics really close. I already looked at the spare mobo and couldn't find this "crystal" thing. I also can't find the any big rectangle looking ones like in your pic. Is the pll on the front of the mobo or on the back?

There are also these tapes on my mobo labeling DIMM DDR2 ONLY etc. can i take these off?

OMG I THINK I FOUND IT! SLG505YC264BT (Intel DP35DP) SLG8SP513V (Samsung R70) <- this is from the list of setfsb. And i just found a chip saying SLG8SP513V on my spare mobo for dell studio 1535. Does this mean that above PLL is the one for my dell studio 1535? As i asked b4, will my other mobo in the laptop have the same pll?

 

Yes, the PLL should be the same.

 

so which one is my pll? SLG505YC264BT?
or
SLG8SP513V?
the second one was the one that i found on my mobo. is the second one even a pll? or is it like a mobo type

hmm no luck tried both of them on setfsb but i get this PLL Byte Error

 

SLG505YC264BT is a PLL.
Datasheet here:
http://www.datasheetdir.com/SLG505YC264BT+Clock-Synthesizers

Should be easy to pin mod it to 266mhz.

 

SLG8SP513V this is the one that i see on my spare mobo. This is also one of the pll on the list. But when i try it on setfsb, it gives me PLL Byte Error
i also tried the other one and it still didn't work
Could it be possible my spare mobo has a dif pll even though they are both for studio 1535?

 

Ok i just opened up my laptop and realized that the plls WERE different with my spare mobo. The one on my mobo is RTM875N so after opening up setfsb, sadly i couldn't find it on the list

 

RTM is the worst kind of PLL to have, hard to find a datasheet for.

Try any similar PLL in setfsb, anything starting with RTM.

 

tried all of them none of them work.. Does this mean i can't overclock my lappy??

 

You might be able to pin mod the PLL to 266mhz if you can find the datasheet for the PLL.

maybe send an email to realtek and ask for the datasheet.

 

Lets say i DO get the datasheet, would i have to do it the hardway?? (inside the lappy) or will i be able to do it with setfsb

 

Can't say without the datasheet.

Most likely you will need to do it the hard way.

 

well i just sent the email. hopefully they send one and i can use setfsb to do it

 

Success is had. Although the diagnosis from setFSB still shows the 9th register as 44, I've confirmed with CPU-ID FSB overclocking successful with SetFSB.

Again, Acer 5920g with 1.5ghz CPU, successful FSB overclock using method 1 of the PLL mod on an ICS9LPRS365BGLF.

Two things to note here: 1) I had to take the motherboard *completely* out of the plastic casings. Was lucky to be able to leave the cpu and gpu heatsinks and fans in place. The PLL chip is directly underneath the plastic bridge beside the hard drive.

2)In order to get that 10k resistance, there are two resistors coming out from pin 4 on this board. After finally giving up on re-soldering the second resistor back on to the board, I ran a wire straight from where the resistor would contact the board, to the ground of the ac plug. The only issue after that was getting the wire in a position that wouldn't get knocked around on reassembly.

Final setup is pin4->resistor1->where resistor2 would make first contact to board-> wire-> ac ground. *Do note here that in order for this to work, I had to make sure there was a solid connection between the AC ground and the ground for the battery. I'm not sure if this would be equal in other boards, but I would hope so.

*OC Results for the t5250 (base is 1500mhz):
Instability when trying to reach above 1626mhz
1607 seems to be the sweet spot (336/760) -- a couple added points to 340 didn't really do anything substantial that's worth the added stress.
The Bus speed is thus clocked from 166.7 to 178.7 (FSB: 333.3 to 357.4)
3dMark06 scores (just the CPU overclocked):
Vanilla Undervolted:
____3070 (1290, 1158, 1253)
Overclock @ 1607mhz:
____3205 (1398, 1265, 1358)
CPU @ 1607, undervolted to .95v, PCIe bus @ 115.7(38.6mhz):
____3314 (1387, 1256, 1349) (best & most stable so far)
***A quick note. After a couple of weeks of use, 1607 became unstable. Down to 1601 for continued testing.***

I managed to get a score of 3338 pushing the PCIe to 117.7mhz, but got artifacts after running OCCT for 15 minutes.

To give an in-game perspective, TF2 tends to run a bit low, even when setting the direct x level to 8.1. After running just the CPU up, it's more than able to keep stable, with a lot less FPS hiccups.

Any suggestions on where/how I could tweak the GPU or CPU to squeeze out a bit more performance?

 

Nice work, I'll update the table on the first post with your result. +rep

 

hi all,
i would like to try this on a dell xps m1530 motherboard.
i dont have a lot to lose, although the CPU i would test it with in the end is a P9500 which i would rather not lose.
i also wouldnt mind buying a decent soldering iron for tiny stuff like this.
if anyone would like to help me out id be greatly obliged. ill have the mobo working with a normal santa rosa cpu pretty soon, and probably booting it to linux with a flash drive.

 

Maybe you should overclock the GPU (even though it has a known fault and it may die at any time).

Some acer notebooks have MXM GPUs, if yours does you might be able to upgrade it.

I have 2 8600m GTs (MXM format) that have hynix DDR2 vram, so you can actually increase the ram timings to get a higher OC on the vRAM as you would with any normal ram.

I suggest checking the model of your vRAM and download the datasheet for it, then you could use nibitor to edit the vram timings and even test them before flashing.

 

Anyone tried to overclock PackardBell Ipower? This is the same machine as Gateway's P-7915u. I don't know what is the PLL but in another thread http://forum.notebookreview.com/showthread.php?t=417197 says that there is 9LPRS365BKL in P-7811.

With setfsb the screen goes blank and it just crashes. I have studied this thread a lot and I just can't get all the bits and bytes stuff to play with...

 

Need to identify the PLL and do a setfsb->Diagnosis read to see what the PLL config registers are. If setfsb crashes, try the following:

Using r-w everthing to read PLL config data

1. Run r-w everything
2. Select Access-Clock Generator
3. Change byte 0C from 0D(13) to 16(22), click write close Clock Generator window
4. Select Access->Clock Geneator. It will open same window as before but present 22bytes of data rather than 13.
5. Post those 22-bytes here to give some idea of what is going on.

 

So here it is: http://www.nbl.fi/~nbl2192/setfsb.png

When I just press set FSB, blank screen. TME-mode? I have overclocked my desktops a lot with no worry about TME.

 

Your config register 9, bit6=1 (TME - no overclocking). So would need to perform the tme-unlock mod for setfsb to be able to successfully program your PLL.

 

That's what I thought. Thanks for confirming...

 

setfsb being developed again!! New versions are now shareware. It requires a donation of 500yen (US$5.50) via paypal to get an activation key to then provide GUI/commandline interface to set your FSB. Without the activation key it's only useful to get the FSB/PLL details.

 

Terribly sorry if this has been asked. Has anyone attempted to apply this to the PM55 platform, for mobile i3/i5/i7. At the very least I know PM55 boards run 1066 Mhz memory with i5's and 1333 mhz memory with i7's.

Tried to search this thread but the thread search doesnt seem to work (doesnt return results when I know one exists...)

 

The answer is no, I believe.

I remember the moo had a notebook with an i7 CPU, and he found the PLL, but we couldn't find the complete datasheet for the PLL.

So I guess if you can find a datasheet, there shouldn't be any real problems doing something like the mods shown in this thread.

Please tell us how it goes

 

Thanks alot!
i have overclocked my Quanta TW7,T8100 CPU,PM965 Chipset,
by connecting ICS9LPRS365BGLFT pin 57 to GND. 200->266 fsb.

Quanta TW7 PLL,there is a resistor (4.7K) leading off the Pin57,so it is a simple job.

and my ddr2 667 ram need to mod SPD info by spdtool.
run at ddr887.

 

Very nice, thankyou, I will add your post to the table on the first page

 

Anyone has tried overclock Packard Bell Ipower GX or Gateway P-79xx yet? It needs tme-mode trick or pll-fsb doing... Don't want to be the first one to do it, laptop's too expensive.

 

I'm guessing there's still no way to do this to the SXPS16?

 

So I want to do method 2. I've identified my PPL chip and I have the pin out diagram. My bios also allows Speed Step to be disabled so I should be able to boot at 266 x low multiplier (6) with memory at regular PC6400/800MHZ specs right (No Cas timing changes required) and then up the multipler & voltage with an app like RightMark?

To do this I would have to disconnect the FSL_B and connect it to a ground with a 2K Ohm resistor in between?

 

Yes. You want to apply a 0 to FSL_B to get a PLL running at 266Mhz. Needs to be disconnected from the rest of the system as otherwise the CPU and chipset's BSEL signal will register 266Mhz BSEL. PM965 will no boot as the chipset doesn't recognise that BSEL. First post has 3 examples of 200->266Mhz overclocking on PM965 chipset, so it can be done.

 

It sounds like your describing method/example 3 where I don't need a resistor, is this correct? Can I just connect it to any ground or does it have to be a ground on the PLL.

 

So I've got another laptop;
Vaio VGN-FW590FSB
I've found the PLL chip to be the following:
SL28648 B-LC 0849 M8153A (Japan)

Poked in the Sony section and found a guy that managed to get a datasheet for the SL2864, which may or may not be of the same format. No reply there yet, unfortunately.

I pulled up SetFSB and ran a general diagnosis and got back address 09 was 44 (similar to the Acer I tweaked previously.)

Can the SetFSB Diagnosis be accurate if it doesn't have the correct PLL chip?

Any other ideas on how to OC the CPU on this laptop? (RAM is about as upgraded as it's going to get. Would like to hold off upgrading the CPU if possible.)

 

Looking at the SL2864 PLL datasheet, config register 9, bit 6 tells us TME status. In your case 44h=1000100b, so bit 6=1 (no overclocking). Meaning setfsb software overclocking is not possible until you apply the tme-unlock PLL pinmod AND setfsb has support for your PLL.

Another option would be a FSLx pinmod similar to described here. A T6600-2.2/800 would become 2.93/1066. Such a mod likely requires a BSEL pinmod to increase the voltage.

 

...wow. Now that would be an impressive overclock. I was hoping to avoid the hardware oc (work laptop -.-; ), but if I ever have a friend with a vaio and no warranty, I know what methods to use.

Thanks Nando.

 

Hey guys,

I read nearly the whole thread and some others on the same topic.
I bought an FSC U9200 with an T2570. It's the PM965 chipset onboard which only can do 800mhz FSB. Now I want to get an P8600 (or a smaller one, but important is that its a Pxxxx).
So i need to get 1066mhz FSB because otherwise the cpu wont work.

I would prefer to make a Pinmod in the socket instead of the other method.

Does anybody has experience with this notebook? I guess that a vcore mod is not needed because the cpu will not be overclocked.

I cannot find a pinlayout of socket p, which pins have to be connected?

Thanks!

 

You need the PDF here for the pinout:
Intel® Core™2 Duo Processors and Intel® Core™2 Extreme Processors for Platforms Based on Mobile Intel® 965 Express Chipset Family Datasheet

I believe nobody has tried what you want to try before.

 

Thanks for your quick answer, but I dont know where those pins are. naton mentioned the pins in one of his posts, but i dont know where to find them in the socket.
I guess the risk that it wont work is ok, when it doesnt work i will get a T8300 or something like that.

 

Would need to isolate the P8600's 266Mhz BSEL on the CPU from reaching the rest of the system. My reading of the PM965 datasheet suggests the it will not boot otherwise as it only allows 133, 200 (and probably 166Mhz) BSEL. A T6400/T6500/T6600 CPU would be an interesting one to try since has a native 800Mhz FSB. If your PLL can be pinmodded to 266/1066Mhz then would get a nice overclock.

 

Do you know where i can find the pins? Then i can test it and post the result here

I guess it would be much more strenghtfull, but i want to have the P8600 because of less heat and less vcore. If it doesnt work out, i will try the undervolting mod out of this thread.

Those 2 Pins should be those naton mentioned (B23 + B24), if i am right.


Ok, I am right.

 

If you look in the datasheet i posted a link to, you will see the full pinout and that will include the missing pin which will help you get a reference point.

 

Sorry,havent seen that before. Now I checked it, my picture shows the 2 Pins.
I will buy a P7350 for the first test, if it works I will buy a faster one.

 

Here is a good price:
http://forum.notebookreview.com/computer-components/484543-fs-p7350-2-0ghz-3mb.html

also make sure to do the mod the way nando described. You don't want to do what naton said. With your chipset, doing nations mod will just tell the notebook that the CPU has a 266mhz FSB, which is not what you want (because the CPU is already doing that by itself without any mod).

You want to tell the notebook that you put in a CPU with a 200mhz FSB (trick it) so it will boot, then you should overclock the FSB with a PLL pin mod.

 

I found a cheaper one here in Germany

I have this in my U9200:
ICS9LPRS365BGLF

So if i do what you told another user, i will have a 266mhz fsb?
then i dont have to use setfsb, right?

 

Yes, right (just make sure your ram can handle the new speed).

 

ok lets see if it works.