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Cheap Processor Upgrade?

post #1 of 754
4/14/05 at 6:46pm
Thread Starter 
Read Here

Evidently if you ground one pin on the 400FSB Dothans it will force it to run at 533FSB speeds. A really cheap upgrade opportunity.

Get this from Newegg

Ground one pin and evidently it can run at 533FSB all day long.

Might be worth some more research.

That chip should have a 16x multi So it would work out to (16x133)=2.128

The mod on the link was for a 715 series processor. So it runs at (15x133) or 1995 Mhz

I think I'm going to attempt this with a 725 processor once my 9300 comes in.

Maybe Ill go ballzy and go for a 735 (17x133) 2261 Mhz
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post #2 of 754
4/14/05 at 7:04pm
possibility
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post #3 of 754
4/14/05 at 7:07pm
Thread Starter 
Actually this has been confirmed by one person so far. The person that came up with the Idea. I am checking the tech docs for the Pentium-M atm

He on an I6000, gronded the BSEL0 Pin of his Pentium M-715 (15x100) it is now running perfecly stable at (15x133) or 1995Mhz a 25% increase.
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post #4 of 754
4/14/05 at 8:08pm
Thread Starter 
Ok I have been reading the intel Documents. This looks legit. There is a pin that controls what FSB speed the processor operates at. Its dependent on the chipset. If the BSEL 0 pin is grounded the processor will properly identify as a 533 FSB processor to the 915 chipset. Looks like we have some good overclocking possibilites here. I also found all the info on pin modding the Maximum Vcore for overclocking.
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post #5 of 754
4/14/05 at 8:25pm
very interesting stuff
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post #6 of 754
4/14/05 at 8:26pm
shit, i already have a dothan 1.7ghz in my other laptop that I upgrade. Had I known about this I wouldnt have JUST sold it. It ships out tomorrow

I could have tried it
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post #7 of 754
4/14/05 at 8:41pm
Thread Starter 
When my 9300 comes in I am going to order a Dothan 1.7 400FSB and attempt this.

If it is sucessful I will make a guide and post if for all to see along with detailed pictures.


2.26Ghz Sounds great to me, especially for $250 bucks.
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post #8 of 754
4/14/05 at 8:42pm
Quote:
Originally Posted by Spazilton
When my 9300 comes in I am going to order a Dothan 1.7 400FSB and attempt this.

2.26Ghz Sounds great to me, especially for $250 bucks.
250 bucks? You can get a one $70 cheaper on ebay. Some are pulled from machines, some are new.

and I think I will attempt this too, just need more info.

Do you have an documents about this spazilton?
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post #9 of 754
4/14/05 at 8:42pm
Thread Starter 
Damn good point.
Better to screw up a used one.

I have the intel tech specs. From what I am reading I have enough info to modify the FSB and Vcore if needed.
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post #10 of 754
4/14/05 at 9:43pm
Quote:
Originally Posted by Spazilton
Damn good point.
Better to screw up a used one.

I have the intel tech specs. From what I am reading I have enough info to modify the FSB and Vcore if needed.
Hmmmmmm. Wonder if I should try this with my I6000 with it's 1.5. I have done this way back in the day with a celeron 300a - 450mhz and a p3 700 -933 by applying nail polish to the contact. If it doesn't work just remove the nail polish. Do we have to ground or isolate?
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post #11 of 754
4/14/05 at 9:45pm
Quote:
Originally Posted by Spazilton
Actually this has been confirmed by one person so far. The person that came up with the Idea. I am checking the tech docs for the Pentium-M atm

He on an I6000, gronded the BSEL0 Pin of his Pentium M-715 (15x100) it is now running perfecly stable at (15x133) or 1995Mhz a 25% increase.
that's a 33% increase man
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post #12 of 754
4/14/05 at 9:54pm
Thread Starter 
Mad props to your find
I made sure to link to the orginal post so you could get your credit
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post #13 of 754
4/14/05 at 10:04pm
Which Dothans run at 400MHz & which therefore run at 533MHz (or do they all only run at 400MHZ)?
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post #14 of 754
4/14/05 at 10:07pm
Quote:
Originally Posted by Proud9300_OZie
Which Dothans run at 400MHz & which therefore run at 533MHz (or do they all only run at 400MHZ)?
i'm not too familiar with that myself. i'd refer to intel's spec sheets

but i thought that the 533 dothans were called sonoma or something
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post #15 of 754
4/14/05 at 10:07pm
Thread Starter 
I have to find out what processor socket the I9300 uses first then I will be able to post a listing of compatible processors. There are 2 socket types for the Pentium M.
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post #16 of 754
4/14/05 at 10:16pm
Quote:
Originally Posted by Spazilton
I have to find out what processor socket the I9300 uses first then I will be able to post a listing of compatible processors. There are 2 socket types for the Pentium M.
two? damn i better hold off on my ebay purchase.
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post #17 of 754
4/14/05 at 10:22pm
basically they are all socket 479 i believe. the new dothans just have one pin missing so it's 478. but i'm pretty sure theyre the same
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post #18 of 754
4/14/05 at 10:23pm
just to further note, the pentium m 715 is the best one to be going for. it's the 400fsb that you want, and it clocks to 2.0 which i'd say should be pretty guaranteed safe
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post #19 of 754
4/14/05 at 10:26pm
Quote:
Originally Posted by ziddey
just to further note, the pentium m 715 is the best one to be going for. it's the 400fsb that you want, and it clocks to 2.0 which i'd say should be pretty guaranteed safe
Na, If it works I am going to get a 1.8 for my XPS.
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post #20 of 754
4/14/05 at 10:30pm
the thing is, if the 1.8 is a 400fsb, 133% of that is 2.4ghz. i dont know about stability up there in notebook environments. you could try but vcore/heat might become an issue

and battery life too probably
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