Will T40 work with this Dothan processer?

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Donwx · #1 Post by **Donwx** » Thu Jul 12, 2007 3:48 pm

Hello I have a Thinkpad T40 Build:2374 I was looking at a Dothan Intel pentium M 740 1.73 ghz processer I just wanted to know if my T40 will work with the 740 model type? Thanks.

Heres more info about proceser:

rocessor type Intel Pentium M
Processor number 740
Part number RH80536GE0302M
BX80536GE1733FJ
Processor markings 1.73/2M/533
Package type 478-pin Micro-FCPGA
Processor speed (MHz) 1730 / 800
Bus speed (MHz) 533
Clock multiplier 13
L2 cache size (MB) 2
Stepping C0
Manufacturing technology (micron) 0.09
Core voltage (V) 1.26 - 1.356 / 0.988
Case temperature (°C) 100
CPUID 06D8h

chan_man · #2 Post by **chan_man** » Thu Jul 12, 2007 3:59 pm

It should boot but will not be running at 1.7Ghz since the processor that you are looking at is a 553Mhz bus and not a 400Mhz.

SHoTTa35 · #3 Post by **SHoTTa35** » Thu Jul 12, 2007 4:34 pm

you can get the 400Mhz bus versions of the Dothans. Those will work but you can't use the 533mhz ones, or well you can but you wont get the speeds so just stick to anything without the .3 at the end

1.8Ghz is pretty cheap now and 2.0 is up there but make sure you get the long fan too (gator has one apparently) to keep it nice and cool.

#4 Post by **jdhurst** » Thu Jul 12, 2007 5:24 pm

chan_man wrote:It should boot but will not be running at 1.7Ghz since the processor that you are looking at is a 553Mhz bus and not a 400Mhz.

My Dothan upgrade in my T41 runs at full speed. I don't have my TP on right now, but I am fairly sure it is a 400Mhz bus.
... JDH

SHoTTa35 · #5 Post by **SHoTTa35** » Thu Jul 12, 2007 5:37 pm

jdhurst wrote:
chan_man wrote:It should boot but will not be running at 1.7Ghz since the processor that you are looking at is a 553Mhz bus and not a 400Mhz.
My Dothan upgrade in my T41 runs at full speed. I don't have my TP on right now, but I am fairly sure it is a 400Mhz bus.
... JDH

He's correct because the OP was talking about the 1.73Ghz version which is a 533Mhz bus. The multiplier would be 17 x 100 but since that chip would be a 13X multiplier it would only run at 1.3Ghz (13 x 100)

Donwx · #6 Post by **Donwx** » Thu Jul 12, 2007 5:50 pm

Thanks for the reply's, what about this one I know it's bus speed is 400mhz?

1.7Ghz
400MHz front-side bus
2MB L2 cache
478-pin
Centrino processor for laptop computers
Dothan
model SL8BA
735A

#7 Post by **jdhurst** » Thu Jul 12, 2007 6:03 pm

I'll have to look when I get a chance. My Dothan is 1.8Ghz, and it certainly runs at 1.8Ghz. So maybe it is a different Dothan.
... JDH

SHoTTa35 · #8 Post by **SHoTTa35** » Thu Jul 12, 2007 6:03 pm

stay away from those A versions... I think the one you need is the 479 Pin version not the 478.

(or maybe i got it backwards)

Doublecheck tho ....

jdhurst wrote:I'll have to look when I get a chance. My Dothan is 1.8Ghz, and it certainly runs at 1.8Ghz. So maybe it is a different Dothan.
... JDH

As for that, you don't have the 1.86Ghz version which would be the 533Mhz bus. You have the 400mhz bus version which will run (at the right speed) in the T40 - 42s.

#9 Post by **Harryc** » Thu Jul 12, 2007 6:30 pm

Take a look at the following link. Anything in the Dothan list will work, and long as it has an sSpec Number and is listed as having a front side bus of 400 MT/s. As mentioned, stay away from the 'A' 's. (.e.g. 725A, 735A, 745A)

http://en.wikipedia.org/wiki/List_of_In ... processors

Yandar · #10 Post by **Yandar** » Thu Jul 12, 2007 6:45 pm

In addition to staying away from the 7**As. You also need to ensure you get a B stepping chip. The C stepping chips do not work at full speed.

I upgraded my TP, and it was the stepping that bit me.

#11 Post by **jdhurst** » Thu Jul 12, 2007 7:04 pm

I have my ThinkPad running again. It is a 1.80Ghz Dothan. It runs at 1.8Ghz. It is a Pentium M 745 (different from a 740) and the Front Side Bus is 400Mhz. It is 479 pins. The machine is a 2373.
... JDH

Donwx · #12 Post by **Donwx** » Thu Jul 12, 2007 7:43 pm

Thanks,I think this may work:

http://cgi.ebay.com/INTEL-1-7GHz-CENTRI ... dZViewItem

#13 Post by **Harryc** » Thu Jul 12, 2007 7:52 pm

That's way overpriced. Here's is a 1.8 Dothan for less $$ -

http://cgi.ebay.com/Intel-Pentium-M-Cen ... dZViewItem

If your set on a 1.7, here's one for $40.

http://cgi.ebay.com/Intel-Pentium-M-Cen ... dZViewItem

SHoTTa35 · #14 Post by **SHoTTa35** » Thu Jul 12, 2007 7:56 pm

yeah it would but i don't know about that price. Is it me or should that be a lot cheaper such as:

http://cgi.ebay.com/Intel-Pentium-M-735 ... dZViewItem

or

http://cgi.ebay.com/3616-Intel-Pentium- ... dZViewItem

Normally you can get a 1.8Ghz for like $50 - check the marketplace on this forum to see if anyone has any.

Donwx · #15 Post by **Donwx** » Thu Jul 12, 2007 8:04 pm

Thanks alot!!

Donwx · #16 Post by **Donwx** » Thu Jul 12, 2007 8:31 pm

Allso If yall dont mind one more question, If I replaced my T40 motherboard with a T60 motherboard would it work?

SHoTTa35 · #17 Post by **SHoTTa35** » Thu Jul 12, 2007 8:32 pm

nope, wont fit

Will T40 work with this Dothan processer?

Will T40 work with this Dothan processer?

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