Fun with pin modding: Dell 9300 dothan 755@ 2.66, laptop wr

After reading about the luck people were having with pin modded dothans in laptops, I tried my luck by replacing a dothan 750 with a 755, bsel[0] modded and vid modded. The results:

http://img209.echo.cx/img209/6927/wr...able3ze.th.jpg 31 sec superpi 1M

http://valid.x86-secret.com/show_oc.php?id=19366 - my cpuid verification (complete with dell motherboard :) )
Since the voltage change is a pin mod, the voltage you see in CPUID (1.340) is not correct.

I had to play around with many small copper strands of wire to get it -=almost=- 100% prime stable @ 2.66. After trying out every voltage setting, I have determined 1.644v to be the most stable voltage. However, prime still fails after about 8 mins of 12k FFT testing. All the other tests are stable, and it runs every program I can throw at it like a champ. I ran prime on it overnight with the keyboard taken off the machine - it lowers the temp 3 degrees C. :)

Even if it were 100% stable I would still not use it regularly at full speed. The CPU temp peaks at 78 C and the fans kick on high when the CPU temp hits 70 (very loud on the 9300 on high!). So I scaled the multiplier back to 19x and am "settling" for 2.53 ghz. I can then drop the voltage down to 1.516. There the temp never breaches 65 C and the CPU fan stays on low. I've tested prime on this config twice overnight with no problems.

http://img226.echo.cx/img226/4407/pinmodphoto2zm.th.jpg
My socket w/ the jumpers (bsel0, vid0, vid1, and vid4)

I got the idea by reading this notebookforums thread: http://notebookforums.com/showthread...6&page=1&pp=15

Gotta give credit to ziddey for the great find for the pinmod and Spazilton for the vid mod. You can read about ziddey's 6000D in this thread: http://www.xtremesystems.org/forums/...ad.php?t=61875

The interesting thing about this vid mod is the speedstep still works, it's just crippled. At 6x multiplier, my chip is asking for .700v and getting 1.004. Not bad considering the chip ships stock running at .988v when stepped down.
BTW my idle temps actually dropped, since I removed the janky thermal pad it comes with and applied AS5 on both the CPU and GPU.

Oh and since this is my first post, I would like to add: thank you everyone for all the good reading! You have all been an inspiration to me!

Edit: my 3dmark '01 run: 25698!
http://service.futuremark.com/compare?2k1=8587678

Thats pretty kickass man :toast:

awsome 31.xxx sec 1m super pi on a notebook is insane

wtg... whatcha gonna do with the 750??

C

Probably just sell it on ebay.

jesus!!! did that say the cpu temp was 73 degrees??? :slobber:

Yeah, the dothans can get pretty hot without problems. The thermal spec is 100 C. I had it up to 83 w/ the voltage @ 1.692 before it started locking up, and even then it took a good hour and a half of prime to do it.

I didn't feel too uncomfortable running a mobile chip at those temps. I've seen my Pentium 4 M laptop running at 90 C at stock clocks! I had no idea it was running at those temps until I noticed it throttling to half speed after a bit of gaming. My heat sink was clogged with dust. They have to design laptops with that in mind, I'd imagine.

That frickkin' insane in a good way :D

How about us who have latops with 855 chipset, and are ofcourse using 400fsb mobiles, can we mod the chip to force it @ 133fsb or is it only the newer chipset which support 133fsb from birth?

My 2.0 would sure love to run @ 2.66GHz :P

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Originally Posted by Pejsen

That frickkin' insane in a good way :D

How about us who have latops with 855 chipset, and are ofcourse using 400fsb mobiles, can we mod the chip to force it @ 133fsb or is it only the newer chipset which support 133fsb from birth?

My 2.0 would sure love to run @ 2.66GHz :P

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It's only for 915GM because it's the only chipset that can support running 533 FSB.

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Originally Posted by TSFroggy

It's only for 915GM because it's the only chipset that can support running 533 FSB.

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Thx :)

*me runs of to get a new laptop* :slap:

Yeah, you could pick up a new one that runs native at 533 fsb sometime with like a 1.6 in it and swap the two processors. Although then your old machine would take a speed hit cause you'd be running a 533 chip at 400mhz. If your old laptop can use a clockgen you can work around that though...

Update and question for all: I was able to change my memory timings from 4-4-4-11 to 4-2-2-4, been running it for a while with no problems. Haven't noticed a performance boost in memory tests or anything, but cpu-z does indeed report it running at 4-2-2-4. Should I notice a boost in performance? Am I putting myself at risk of instability?

Quote:

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Originally Posted by TSFroggy

It's only for 915GM because it's the only chipset that can support running 533 FSB.

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But what could happen if setting up BSEL0 on 855-based Notebooks?
Does it switch to FSB533 or not?

I think most of i855 Chips getting FSB533 easily. :D

cu, BitpowerPM

wow, nice job. Did u apply AS5 maybe to lower temps a little more??

Is it just me or are the two images of the socket with the wiremods different? The one with the overlay seems to have the wires one row lower? Which is correct?

I'd hope it was the top one, since its an actual pic, and its probably what he's running :)

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Originally Posted by Vapor

Is it just me or are the two images of the socket with the wiremods different? The one with the overlay seems to have the wires one row lower? Which is correct?

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Yeah... I noticed that to

Quote:

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Originally Posted by BitpowerPM

But what could happen if setting up BSEL0 on 855-based Notebooks?
Does it switch to FSB533 or not?

I think most of i855 Chips getting FSB533 easily. :D

cu, BitpowerPM

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No, 855 chipset mobo's don't even check bsel0, they just assume it's a 400fsb chip. In fact, if you put a pentium m 7x0 chip and stick it in your motherboard it will run at 400 rather than 533 (for example it will downclock a 760 @ 2.0 to 1.5 ghz)

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Originally Posted by moddolicous

wow, nice job. Did u apply AS5 maybe to lower temps a little more??

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Yeah, I applied AS5 on both my CPU and GPU in an attempt to lower my temps. I even varied the thickness a little bit to see if I could get any colder. (to no avail.)

Quote:

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Originally Posted by Vapor

Is it just me or are the two images of the socket with the wiremods different? The one with the overlay seems to have the wires one row lower? Which is correct?

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Whoops, glad I spent more time on the wiremodding than I did the photoshop :)

The picture of my socket is the accurate one. Thanks for pointing that out. I took the picture down (hopefully before people started following my diagram).

how did you change the timing of the ram?

RightMark Memory Analyzer. Although the timing change registered with cpuz, I don't see any percievable performance difference when measured with sisoftware sandra or RMMA.

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Originally Posted by lucidchaos

RightMark Memory Analyzer. Although the timing change registered with cpuz, I don't see any percievable performance difference when measured with sisoftware sandra or RMMA.

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tiomings most of the time have little to no impact on most benchmarks. critical programs like superpi will show a difference, however.

25k on a notebook is awesome, makes my pc feel E witty bitty.

I just want to know what if your cpu die in inspiron 9300, will deal replace one for you? :D

lol I think they would take the chip off and wonder "where is the thermal pad? no wonder it overheated, it has no thermal pad!

I'm keeping the stock 750 around just in case my 755 goes boom.

I think i'll try another superpi run with the new timings soon, was able to score a 31.1xx after a couple tweaks last time, maybe I can hit 30...

I can't wait to do this mod on my gf's dell 1.6Ghz lappy :D

Ok I'm now in 30 second territory: :woot:
http://img85.echo.cx/img85/3395/moneypost8ad.jpg

I found a clock gen that <sort of> works with the lappy. I can pump up the fsb from 133 to 134 :/

Now I need to figure out why that is the limitation. I tried setting my multiplier to 12x temporarily to see if I could raise the bus speed more but to no avail. I tried locking my PCI at 33. I tried doing a rain dance before the FSB change. No results. It still craps out within a couple of MHZ. Even in the other direction, dropping the bus speed from default. And here's the kicker: if I raise it just a little more than it should be, fail superpi 1m at the 16th iteration, and then set it back to normal, superpi fails IMMEDIATELY.

What is the problem here?

that's so nice, wish intel would get on the damn ball and start making these chips for desktop, would give amd a run for their money and my next chip might just be an intel. froth dual core dothan, hehe.

that pretty damn good, how much did you battery time drop after the overclock?

not much, I'm still getting better than 2 hours with the screen all the way up. I haven't done any pre-mod and post-mod measuring but I'll just say the difference is hardly noticable, maybe 20 mins less. I'm sure it depends on what I have it doing, also. If I'm on battery I'm just checking the forums or something light-load like that. Speedstep still drops it to 800 mhz @ 1.004 volts when idle. That's only up .016v from default settings.

Lucid - where did you get your 755 from?... I've got a new Inspiron 9300 arriving next week with a 740 Dothan. I think I'll try your mod!...

Lucid - me again, so can I confirm you prime stable o/c is at 2.53Ghz on your laptop and you're using that for everyday use with no problems?...

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Originally Posted by cinders

Lucid - me again, so can I confirm you prime stable o/c is at 2.53Ghz on your laptop and you're using that for everyday use with no problems?...

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I got the chip off ebay, used. Yes, my system passed prime blend test overnight twice, and am using it gaming for long periods of time with no problems @ 2.53. However, I paid a pretty large premium to get the 755 over the 745 for an extra 133 mhz and it does get pretty hot. I've seen as high as 76C while gaming, nothing to worry about but still warm.

I bought the chip with the intention of running stable at 2.66, and I have determined that is simply not possible with my cooling solution. I have to downclock it with software to get it to run at 2.53. The problem I am up against now that bothers me is the fact that my system will NOT run stable without rmclock running in the background. It's not like I can just switch it to 2.53 in bios.

Knowing what I know now, I would instead buy the 745. In fact, I plan on buying a laptop that runs at 400fsb with a 745 in it and then swapping out the chips to have my 9300 running at 2.4 and my new one at 2.0 (or higher if i can find a clockgen that works with it.)

One more thing to add - my voltage setting is optimal for the full 2.66; 2.53 doesn't need as much.

Good luck with whatever you decide!

That is SOOO cool .. overclocking a laptop.. Great job !! :)

So in your experience the best one to go for is a 745 @ around 2.4Ghz. Sounds good!....

I guess the next question is what sort of real-life speed increase this would give over standard speed?...

The 9300 I'm getting runs at 1.7Ghz, so I need to work out if spending extra money/taking a risk with damaging the laptop is worth it for a couple more hundred 3DMarks and a quicker SuperPi time... ; )

Overclocking the laptop is still very cool!....

Cinders.

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Originally Posted by lucidchaos

I found a clock gen that <sort of> works with the lappy. I can pump up the fsb from 133 to 134 :/

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How did you get that version of SetFSB to work? I also have i9300 from Dell and when I try to run that exactly same version of SetFSB I only get "SMBus Error: 10c0". Could you make the whole software package that you used to raise your FSB available?

I have a 1.6 Dothan in mine, which unfortunately already runs at 533 FSB so the wire trick is out of the question. It seems like a decent chip tho, I can run it at full speed with only 1.004v (maybe even less, haven't tried).

Cheers,
works

Cinders: This won't even budge your 3dmark05 or 03 results, but will give you a pretty big 01 boost and also boost your spi significantly. What I've noticed is the system is notably zippier when mid to heavy multitasking, anything compression oriented like dvd shrink and mp3 compression, and it runs background processes like emule like a champ. However, don't expect an FPS boost with current games until you look at the sky or a wall or anything else that you wouldn't need an fps boost looking at. Your cpu doesn't even matter until your GPU doesn't have to work hard to pump out frames.

My answer - the cost issue is present, although you can sell your 533 bus chip for about the same price you buy a 400 bus chip on ebay, so not too much money there when you sell the old chip. As far as the risk, yes, it is present, but the computer is very easy to dis-assemble and re-assemble. I've had the thing apart and together four seperate times, and unconnected the screen, keyboard, touchpad, pill battery, and power button and lights about thirty or fourty times, along with the chip, to find the best voltage and try to run it stable at 2.66. If you don't do something really stupid, you probably won't break it. Hell, I did do a few stupid things like forgetting to tighten the CPU retention screw and I didn't mess anything up...

Just don't connect a VSS to a VCC :)

Works: I've gathered from this thread at notebookforums that dell has an assorted grab-bag for just about every part of their laptops, including the PLL chip they solder on the motherboard. It seems some 9300s and xps2s come with a pericom pll (like yours) and some like mine come with an ICS, like that used on the acer clockgen I used. It's not just pll's - for any dell you order you may recieve:
screen - LG or Samsung
dvd burner - Sony or NEC
Hard Drive: Hitachi or Fujitsu, 4200 or 5400 rpm

I don't know of a clockgen that works with the pericom pll, but I wouldn't be able to test it if I could find one obviously. The pericom chip is a PI6C410M

http://www.pericom.com/products/tim...ductID=PI6C410M

Hi Lucid,

Thanks for the reply. I'm going to give it a try. I'm fairly good with taking things apart (he says...) and if I can get a 745 chip and run the laptop at 2.4Ghz, that's quite an increase over the standard 1.7Ghz.

I went for the GeForce 6800 256Mb version, so the GFX card is pretty good - it should be quite a powerful gaming laptop when finished.

Now I wonder if you can O/C the GPU very well.... : )

I guess it's time to start searching on e-bay...

Cinders.

lucidchaos: thanks for the info, quite intresting "features" they have for their notebooks. I would have guessed that the same motherboad (and all it's chips) would have been used in all of i9300, apparently not. Now I either have to ebay my old cpu and get a 400fsb to replace it or wait for a new clockgen/setfsb to be released that will support the chip that I have.

Lucidchaos:

Got my Inspiron 9300 last night.....

Guess what else is also coming on e-bay in a week or so... :D a 745 :woot: (let's hope she's a good o'clocker....)

My 6800 Go also seems to have the newer N42 core, so I'll apply a bit of AS5 to the core when it's apart and see if that baby can go any higher... :D

Should end up with one fast laptop or one heap of melted plastic! :eek:

Cinders.

I'm gonna do the mod to my i9300 too. I have a 1.7 chip coming tomorrow.
Do you guys know if I can OC my X300 and how?

TIA :toast:

Well.....

2,66 Ghz @ NoteBook ..... :slobber: ..... That's simply insane! :) :banana:
SO gratulations! :)

greetings
404Power

Quote:

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Originally Posted by EQuito

I'm gonna do the mod to my i9300 too. I have a 1.7 chip coming tomorrow.
Do you guys know if I can OC my X300 and how?

TIA :toast:

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Thanks lucidchaos :toast:

It was this thread that got me interested and the mod went perfect.
As for OC'ing my Mobility X300, I guess I'm gonna have to answer my own question... :D

3D05 #1 score for X300 class: 1934 @ 445/344 :woot:

http://service.futuremark.com/compare?3dm05=975951

Well no joy for me running a 1.8 745 Dothan in my Inspiron 9300 :(

Pulling the laptop apart was easy, so was installing the new cpu with pin-mod...

I Booted up fine at default voltage with no problems, first run of SuperPi 1M, blue screen, reboot.... Pulled it apart again, pin modded to increase vcore... managed to get a 1M SuperPi run, failed on 2M...

Even when throwing 1.644v at it, couldn't even get a 2M SuperPi run so wasn't going to even try Prime... Ah well... :(

The chip I got was dated 2003, I guess maybe a newer one might work better?... :confused:

Anyway, have just ordered myself a brand new 1.7Mhz 735 Dothan :woot: so hopefully I'll have some joy with that... :)

Cinders.

thats a beastly laptop, that thing will make anything its :banana::banana::banana::banana::banana:

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Originally Posted by Jayw28

thats a beastly laptop, that thing will make anything its :banana::banana::banana::banana::banana:

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The i9300 is an excellent laptop, I'm very happy with mine. I sold my watercooled FX55/ATIX800 setup to get it as I'm going to Australia in 6 months so needed something portable. It's got an excellent spec.

However the XPS2 has a 6800 Ultra card in it, people have been overclocking them to 500/1200 and getting around 6000 in 3DMark05 - which for a laptop is excellent!

Quote:

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Originally Posted by 404Power

Well.....

2,66 Ghz @ NoteBook ..... :slobber: ..... That's simply insane! :) :banana:
SO gratulations! :)

greetings
404Power

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Hm. So, any 400FSB Banias/Dothan can be pinmodded to 533? I'm actually interested if there's a way to bring the multiplier down. You see, I'm aiming for about 1.8GHz, at stock voltage... a pinmodded 1.4 dothan would get me to about that... but there's a good chance that the 1.4 won't pull that clock at stock voltage. A pinmodded 1.6, however, would default to 2.13, which is a bit over the top (power consumption would go through the roof). Yeah, so is there any way to lower the multi after??

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Originally Posted by iddqd

so is there any way to lower the multi after??

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Yeah, you have to underclock by software using a tool like RMClock. You can set any multiplier you want, as long as it's under the default. That's what I had to end up doing to get mine to run stable. It's dirty, but it works.

Hi guys,
I was looking for ICS 950810's datasheet (www.icst.com/datasheets/ics950810.pdf) because my BenQ Joybook 7000 uses this chip.

This clock generator doesn't allow SMBUS control of FSB, but it has three frequency selector pins (FS0, FS1, FS2).
The laptop goes default @ 100 mhz (FS0 ON and FS1 OFF). It appears that could be run @ 133 mhz just by connecting pin 1 (VDD) to pin 55 (FS1).
Is it correct or it would still need a BIOS mod? is Speeedstep technology managed by BIOS or internally by the CPU?

just bought a toshiba lappie with ATI Xpress 200M chipset and celeron M 380... so a pin modded 725 will give me 2.13ghz.. 735 would be worth 2.26v, which is probably about the limit at default volts.

EDIT, mine actually has ATI EXPRESS 200M chipset, not 915... but principle should be the same!! Pinmod will make chipset think it's 533fsb part!
C

Charlie, you could always just do it on the celery, the celery performs pretty well anyway and you would be sitting at 2.13 ghz, I am not sure the radeon chipset supports the 533 fsb though so double check that

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Originally Posted by lucidchaos

Yeah, the dothans can get pretty hot without problems. The thermal spec is 100 C. I had it up to 83 w/ the voltage @ 1.692 before it started locking up, and even then it took a good hour and a half of prime to do it.

I didn't feel too uncomfortable running a mobile chip at those temps. I've seen my Pentium 4 M laptop running at 90 C at stock clocks! I had no idea it was running at those temps until I noticed it throttling to half speed after a bit of gaming. My heat sink was clogged with dust. They have to design laptops with that in mind, I'd imagine.

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I thought the thermal spec was valid only for stock values, and goes down if you raise clock speed or Vcore. That's why mobile counterparts (like mobile Athlon XP) have higher max T, because they run at lower Vcore (and are able to handle the higher temp). Sounds reasonable that a higher Vcore puts a higher stress on the CPU, and can't be used with those high temps because of that. I'm not sure about this, any comments?