Guys, what is the highest Vmch u can reach on ur P5B? My board will not boot, if i set Vmch higher then 1,66V.. But i need more Volts to get FSB > 505MHz with 1066-Strap! Any ideas?
Thanks!
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Guys, what is the highest Vmch u can reach on ur P5B? My board will not boot, if i set Vmch higher then 1,66V.. But i need more Volts to get FSB > 505MHz with 1066-Strap! Any ideas?
Thanks!
I am wondering if i can safely do the vDroop mod with conductive paint? I already tried it, and no shorting and vDroop anymore, but a little overvolt on load (0.01 - 0.02v). But i got warned by other members, so i quickly undid it.
Now, i Googled a bit on the subject, and came across this guy who also tried it with success:
http://www.blazingpc.com/forum/showt...76/index.html?
So, the question is: can i safely do the vDroop mod with conductive paint? What are the long-term effects? Can the board handle the extra current! tnx, SP
Quote:
Originally Posted by SPivX
Short answer: NO! :shakes:
Conductive paint does create a (nearly) zero Ohms connection, while you only want to decrease the resistance value.
And believe me, this guy in the thread that you linked to, doesn't even remotely have a clue of what he's talking about. :) I wouldn't go as far as calling him an idiot because I don't know him personally, but honestly, he's talking bull.
And remember to use a multimeter when doing mods like that. Without measuring, it's like a lottery.
Thank you for the answer. I will do the mod again tomorrow using a pencil. The first time i did it, i noticed that i needed a lot of painting to lower vDroop. I couldn't get it gone even after 4 times of tracing! I used a HB pencil. And the graphite made a mess around the transistor, which should be dangerous.
Do i need to use a different pencil? Any other clues?
You need a multimeter. Resistance isn't measured in pencil strokes, you know?
:D
And yes, perhaps a different pencil would be better. But I never did pencil mods. I'm more into good old solid soldering.
I have a DMM, and will use it tomorrow ;-) Also i have this "pencil-pen" (don't know the correct English word for it) with a very hard tip. I think i'm going to do the mod with that, and measure resistance after each couple of strokes.
I'll let you know!
Is there a vPll-Mod availible for the P5B Dlx?
Also measure point would be interesting for me...;)
Thanx in advance...
Quote:
Originally Posted by stummerwinter
If no mod is available yet, just take your multimeter, set it to continuity testing mode and put one probe on the socket land named "VCCPLL" (D23). Then probe around next to the socket for direct connections to find out where it's running to. That way I found the VPLL mod on my AW9D. Quite easy. If you found direct connections, just keep following the direct connected traces to find the origin.
Sry, can't find it...:(
Couls you held me out? Should I post some pics? Would this help?
Yep, post a pic/pics of the CPU socket itself, then I'll mark land/contact D23 for you. ;) Some pics of the sockets surrounding sure wouldn't hurt, too.
Sry for late response, I'm quiet bussy...
Here the pics, if you need details or other, just tell me...
http://oc-x.de/mods/p5b-1.jpg
http://oc-x.de/mods/p5b-2.jpg
http://oc-x.de/mods/p5b-3.jpg
Check this pic:
http://www.alice-dsl.net/ingmar.kris...BLIC/p5b-2.JPG
You can also have a look at Intel's Core2Duo datasheet for reference. ;)
Ok, thanx, NOW I understand what you're talking about...:rolleyes:
I'll try out and keep informed...
You can always contact me over ICQ tomorrow if there are any questions. ;)
Sry, was busy...
Here some results...
I measure more or less all points in the yellow rectangle you marked 56 kOhm, except these...
http://oc-x.de/mods/P5B-Dlx-D23.jpg
OK, now please measure the resistance between the green marked pionts and ground.Quote:
Originally Posted by stummerwinter
61 kOhm
Were to find the vPll-measure ponit? I would guess at the transitor at the top...
The points in green and anything directly connected to it are the measure points. ;)
What you'll need is a 1 MOhm and a 100 KOhm trimmer in series. The 1 Megaohm is there for the rough adjustment and and the 100 Kiloohm will do the fine adjusting when reaching the non-linear resistance range of the 1M.
As this is a linear and no switching regulation circuit, the points directly connected to land D23 are measuring points, too.
You solder the two trimmers together in series and then solder them in between ground and one of the green marked contacts. That should do the job. Of course you'll have to set the trimmers to maximum resistance here before soldering them in. ;) Before powering up connecting the system to power check the resistance between the green marked contacts and ground one more last time. It shouldn't be much lower than 58 KOhm.
BTW, as a side note: Ground could be just on the contacts directly above the two green marked empty soldering pads where normally most likely some additional ceramic caps would've gone.
Wenn du noch Fragen hast, schreib einfach im ICQ oder schreib ne PM. ;)
Ok, thanx...
Need to get 1 MOhm-trimmer first...
I'm gonna measure first the vPll without mod...
Edit: ok, even with 500 MHz FSB the vPll ist 1,5 V...
There is not much load on that circuit, so why should the voltage drop. Just have a look here:Quote:
Originally Posted by stummerwinter
http://www.xtremesystems.org/forums/...d.php?t=179757
Sry, wrong expression...
Thought it might increase the vPll automatically with higher FSB...;)
Ah, OK. Then this was a misconception on your part. ;) Unless you change the voltage intentionally, it should never be much less or much more than 1.5V.
BTW, it is spec'ed as 1.5-1.575V by Intel.
Question: all values are measured without CPU...
Is this the right way?
Tried with 500 kOhm and 100 kOhm, no effect on vPll...
You mean you trimmed both down and no voltage change?Quote:
Originally Posted by stummerwinter