PLL Pinmod Overclocking Methods and Examples

@FieroGT, can you send a quick email to Abo (creator of setfsb) to let him know that it works with your notebook so he can update his site?

EDIT: Also (I hope I'm not asking for too much), can you make a new thread in the dell section of this forum letting those users know how to overclock your notebook?

Because it's a popular notebook and I think lots of people would overclock if they saw how you did it.

 

I have not yet tryed the pll mod to 266fsb but im thinking if my smbus with some setting in its register stops me from detecting my pll registers and if it is then maybe someone knows this register address so i can change it via software.

 

no prob, i would be happy to do both!

 

Already started one: Inspiron 1525 successful overclock and created another Successfully overclocking DV2000.

 

hmm i am tryin to use SPDtool here, and its not very clear on what to change...
none of the normal values seems to be in the list anywhere? any ideas?

 

What timings does SPDtool show in the Timing Summary table?

 

its currently
@ 5-5-5-15-20-43-3-5-3-3 for 333mhz
i need to change it to the 400mhz values which are:
@ 6-6-6-18-24-51-3-6-3-3

 

@FieroGT
That won't work. You would have to find a compatible SPD dump with 6-6-6-18 @333 and I don't know if it even exists.
Edit:
Just in case you brick your RAM here are tips how to flash and also a link to a recovery process:
http://forum.notebookreview.com/showpost.php?p=5333093&postcount=14

What ever you do, save a SPD dump of your unmodified RAM first!

 

That's true. Had the same issue, though I used Thaiphoon Burner on my system to deal with OC from 133->166 FSB (RAM 533->667). So 266Mhz table needed the 333Mhz entries. What I did was changed just CAS from 4 to 5, then used memset in Windows to tweak the other timings based on memset screenshots I found on the web for 667Mhz/800Mhz. If you're playing with the spdtable, best to flash 1 RAM stick at a time, test it. So "good" stick can still be used to boot system and hotflash the test RAM back in case your system doesn't boot.


Thaipoonburner changing CAS=4 to CAS=5 for 266Mhz SPDtable entry

 

for sum reason thaipoon wont run on my sys... it says its compatible with x64, and win7. so i dunno wats the prob. i get this:

nxsIO: Exception
Could not install system driver!

--
so i dunno wat to do now...

 

did you download the 64-bit version of thaiphoon burner?

 

i have only seen 1 version... various versions, (which i've tried a few with same results)

but i dont see any specific 64bit ver....

edit:
ya at the authors main page it lists one DL for
Operating System Windows NT/XP/2003/x64/Vista/7

which is the 1 i got

 

did you download from here:
http://jungle.at.tut.by/download.html

Also can you run it as admin?

 

yes, i've done both

and now lookin at the windows logs, i'm getting these errors,:

\??\C:\Windows\SysWow64\DRIVERS\nxsIO32.sys has been blocked from loading due to incompatibility with this system. Please contact your software vendor for a compatible version of the driver.

The NextSensor Kernel I/O Driver service failed to start due to the following error:
This driver has been blocked from loading

---
so, i'm thinkin maybe this doesn't in fact support win7....
cuz win7 has all this driver protection thing, and they all gotta be signed er sumthin...

 

can you use spdtool?

Also if you can temporaraly install winxp and flash your ram, it would be one way to get it working.

 

hmm ya that gives me an idea, i got 1 of them winxp bootable usb sticks, i could probly use that to temp run xp and flash everything....

also spdtool is working
but i'm not 100% sure if i set it all right, i think i got it right. but i dont wanna kill my rams...
do you think i could give u my mem dumps , 1 of stock, and 1 i modded, so u can see if i did it right?

also got this d00d up to 250bus stable so far so good!, 500mhz oc! dam this is sweet!
mem is @ 417 now running on 333 timings still...

 

your CPU is like myne, just with lower L2 cache.
I got myne to a 272.2mhz FSB before my ram became too unstable and I got BSOD.

I would expect to get to 2.9ghz with proper ram, but my ram has WP (write protection) enabled so I can't flash it.

 

Pretty good tolerance by the RAM so far. Though would need to use orthos to confirm stability. Once you get it all stable, consider using hte resume-setfsb.vbs script in this post to automate the overclock after you resume from hibernate/standby.The PLL otherwise forgets it overclocked settings.

 

hmm, welp i just tried to write the new values to my spd. and it gets like halfway done, then right when it starts the verify , it fails all over..

so perhaps then my ram also has the WP. ?

 

That is exactly what my ram does.
I confirm you have WP enabled.

 

DOH!

welp is there sum kinda pin mod i can do to the spd eeprom on the dimm maybe?

 

sort of.

I did try a pin mod to my ram, let me find the thread for you.

While I look for it, let me tell you that in the end the mod failed because the WP pin was used as a thermal pin.
And the WP was done internally in my ram. i believe you would get the same result.

It's possible the WP pin mod would work on older ram, but I doubt it would work with the santa rosa chipset (I assume you have).

 

ok here is the thread:
http://forum.notebookreview.com/showthread.php?t=408349


But I wouldn't even bother trying it, big waste of time.

I think there is another kind of WP, it's supposed to be permanent SW WP.
Perhaps we have this kind of WP.
incidently, I was just reading the SPD datasheets I have tonight.
I will read through them again to see if there is any other way to dissable WP.
I'll keep you updated on this, but I don't expect anything.


One thing you could do is use memset to change some timmings (not CAS).

Also if you can buy one stick of ram and flash that, then you can boot with the new stick + one old stick and they will work at the new timmings even though one of the sticks would still have WP.
Since ram always runs at the slowest SPD config out of the two different sticks.

 

actually after reading the spd datasheet again, I think the reason that my WP pin mod failed was because of this:

EDIT:

But I have an idea:
1. Do the WP pin mod again.
2. This time tape all of the pins on the ram except the SPD pins.
3. Boot with a good stick of ram.
4. Hot plug the modded stick.
5. Try flashing the modded stick.

It may work. But I'm not really happy to try again before I finish researching this.

 

hmm, welp i tried that also, i turned all the timings down to what they should have been if @ 400mhz, cept the cas cuz it wouldnt change it. and unfortunatly it didnt help any... sooo... its either the cas killin me, or maybe i just hit my cpu's limit.

250bus is solid, 255 will bsod after a few hours of load.

could there be any possible mod to increase the mem and/or cpu voltage a little?

 

Have you used rmclock to increase CPU voltage? The wall you're hitting could be either due to RAM or the cpu. With more cpu voltage you'll know if it's the CPU or not.

 

hmm, havnt tried yet, didnt know it would allow me to do that?
lemme fire it up once and see wat i can do...


EDIT:
Welp i loaded it up, and went to cpu info page and it shows my max voltage to be 1.175,
and my current volt is also at 1.175.

so i dont think theres anything else i can do?
unless u know sumthin i don't!

EDIT 2:
ok now ;lookin at the graphs, i'm watching the volt just to 1.275 every so often for just a quick sec or so...
AND its even jumping to the 11x multi every so often for quick blips!??!?!! i can see the mhz jump for that sec as well.

how is this happening? 10x is suppost to be my max?
so its doing it somehow? for sumthing..... if only i could force the 1.275 sumhow

 

it's IDA.

It temporarily overclocks your CPU to the next multi and it makes one core idle.

It's good for single threaded aps.

How do you think I got 2.92ghz in my CPUz validation.
it's 11x 265mhz...

Anyway, you can help me on the following thread to try to get IDA to be always on and not dissable 1 core:
http://forum.notebookreview.com/showthread.php?t=421057


Now there is a hardware mod you can do to increase the voltage.
It's a simple CPU pin mod.
Here is the guide:
http://forum.notebookreview.com/showthread.php?t=390696&highlight=bsel+mod+explained

 

hmm, i lookt there, and it seems there only showing how to UNDERvolt the cpu. which isnt what i want. unless i missed it...

 

overvolting would be simmilar, I can tell you what you should connect.
I will upload some usefull info in 1 min.

 

first download this datasheet:
http://www.intel.com/design/mobile/datashts/316745.htm

 

Look on pages 23-26 of the datasheet.

Please tell me your default voltage, this is the voltage @10x without RMclock running.

 

ok, according to cpu-z, @ 10x it is 1.175

EDIT:

it looks like if i set VID3 to 0 i would end up with 1.275 . ??

looking at the pin layout, i should be able to connect VID3 to the pin directly above it vss.
i think i'm gunna give it a go...

 

Sounds right to me.

I would like naton to confirm it though, because I have never done this mod myself.

If you do it, could you upload a pic?

 

ok, yup, i've done it, and its working. i'll take a pic here in a few and post it.

notes about mod so far:

1- any apps i've run do not indicate a voltage increase at all. ( they all still show 1.175 )
2- i know it did raise the voltage because full load temps have gone up considerably
3- the system is definatly more stable now then it was.
(i was not able to run at 260mhz for more then 1-2mins, its now been fully loaded at 260 for 10mins error free!)

 

that mod that you just did should get you at least another 200mhz (unless your ram becomes unstable).

my T7300 is stable @2.6ghz with 1.1625V.

depending on your ram, maybe you could increase the voltage more and go further?

 

If you change vid4 to 0 instead of vid3 then you will get 1.3750V.
That should get you very far.

FYI, my default voltage is 1.2375V.

EDIT: lol my post count is eleet

 

wow, you think the cpu would take such a higher voltage as that?? (as it is, full load temps went from 70c to 83c) max for this cpu is 100c.

btw still solid at 260... this definatly made all the difference!
will attempt to go further in a little bit.

EDIT:
heh congrats on the post count!

 

I guess you don't really need it unless you want to try for 3ghz.

I suggest 266mhz.

Because if you can get it stable @266mhz then you could do another PLL mod (FSLB pin I think) to change the FSB to be 266mhz.
So that you wouldn't need to run setfsb.

Your bootup time will be faster too.

 

@moral_hazard

sorry about the length of time it took me to respond. here is the pic of my pll

RTM875T-606

 

Ok, can you try using "RTM875T-587" in setfsb and describe what happens.

Also do the following:
Select RTM875T-587.
Click on the "diagnosis" tab.
click on "getfsb"

then post a screenshot of setfsb here.

I have trouble finding the datasheet for your PLL.
I think abo (creator of setfsb) has a copy. He may give you it if you send him an email. Please be polite in the email because abo is a very strange person.
This is what you need to give him in the email:

You can find his email adress here:
http://www13.plala.or.jp/setfsb/

Ask him for the RTM875T-587 datasheet.

 

He had me use the RTM876-660 and send him a screenshot. Here it is if u wanna take a look.

 

can you ask him for the RTM876-660 datasheet?

 

Mortal, i have small troubles here.

I have hard time to get this laptop boot with modded pll, so far only once i have been able to start this laptop to Bios.

I did separate FSLb pin 57 from board and soldered it to GND pin 58.

If i undo the mod (soldering pin57 back to pcb) it will work fine but ofc it wont change the FSB since its in unmodded state.

Not shure whats problem here, i tested the cpu on other laptop with PM45 chipset and with stock volts it ran stable at 3.8ghz (some Core2 Duo madness indeed) overclocked via SetFSB so that overclocking wont be a problem.

 

Have you increased the RAM timings to accomodate for the higher frequency? If not then your RAM is still set to use the previous timings. Use spdtool or thaiphoon burner to *at least* increase the CAS value.

 

Greetings,

I also have the RTM875-606 and would like to help find a way to OC, I've not been able to collect a Data sheet, however This Quanta Doc may be
usefull, see page 3.

I'm not an expert, and could be reading what I want to see, but it looks to me they outline the SLG8SP513VTR ,ICS9LPRS365BKLFT Clock Generator, and in the Table to the lower left, showing how it differs from the RTM875-606.

Thanks for all the great work by everyone, lets see if we can push out a few more Mhz.

 

That is the Aspire One A1x0 datasheet. It shows that those PLLs are pin compatible. The registers are different, though.

 

Well since there are two of you with the same PLL, I emailed Abo (creator of setfsb) and asked for the RTM875T-587,RTM876-660 and RTM876-665 datasheets.

Hopefully the datasheets are close enough...

 

If the PLLs are pin compatible, then you can modify the FSC FSB FSA pins to overclock the FSB.

if you have a 200mhz FSB then:
FSC FSB FSA
0----1----0

if you want 266mhz (Pull the FSLb pin low):
FSC FSB FSA
0----0----0

if you want 333mhz (pull the FSLc pin high and pull the FSLb pin low):
FSC FSB FSA
1----0----0


Those should be simple mods, although I will wait for abo to respond to my email to see if he has some usefull datasheets for us.

 

Abo doesn't have those datasheets.

We really do need the correct datasheet, it would be good if someone sent an email to realtek (or whoever makes the PLL).

I think (not sure) that one forum user contacted realtek for a datasheet, according to the user, realtek responded saying it would charge $20 for the datasheet.

So maybe if someone can either find the datasheet or is willing to pay to get one there would be a better chance to overclock.

Otherwise do the FSLa, FSLb and FSLc pin mod to overclock the FSB.