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New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
I'm curious if T40's mobo (designed primarily for 400MHz FSB Dothans and Banias') will work with 533MHz Dothan CPU? I do remember times of my former Dell Latitude D600 which has had almost same HW as T40, that 533MHz Dothan CPU worked well there, even underperforming on 400MHz FSB. Is it going to work reliably? I know, that memory modules needs to be 400MHz.
I have these parts and I would like to build a nice setup from them:
- 14.1" SXGA+ LCD (damaged LCD cable after my experiments to make this LCD working with R52 Intel board, however I've bought a new one as replacement on eBay for 6 Euros yesterday)
- 14.1" T40 shell with T40 mobo (GPU Radeon 7500)
- 1.8GHz 400MHz FSB CPU, 1.8GHz 533MHz FSB CPU
- 2x 512MB 400MHz DDR modules
- DVD multi recorder for UltraBay slim
- multiple HDDs, 7K100, Fujitsu HDDs and some old 4k2 rpm Hitachis
I have these parts and I would like to build a nice setup from them:
- 14.1" SXGA+ LCD (damaged LCD cable after my experiments to make this LCD working with R52 Intel board, however I've bought a new one as replacement on eBay for 6 Euros yesterday)
- 14.1" T40 shell with T40 mobo (GPU Radeon 7500)
- 1.8GHz 400MHz FSB CPU, 1.8GHz 533MHz FSB CPU
- 2x 512MB 400MHz DDR modules
- DVD multi recorder for UltraBay slim
- multiple HDDs, 7K100, Fujitsu HDDs and some old 4k2 rpm Hitachis
Current: R51e, X240
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
The board will work, but you need a pinmod - described *somewhere* on this forum - in order for the CPU to run at full speed.
Good luck.
Good luck.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
This one?
http://www.notebookreview.com/news/pin- ... m-m-guide/
Does it mean the T40 board will drive 533Mhz Dothan afterwards at full speed?
http://www.notebookreview.com/news/pin- ... m-m-guide/
Does it mean the T40 board will drive 533Mhz Dothan afterwards at full speed?
Current: R51e, X240
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
I don't believe so. That one deals with overclocking a 400MHz Dothan to work at 533MHz. You need a 533MHz CPU running on 400MHz planar, and at full speed.lukee wrote:This one?
http://www.notebookreview.com/news/pin- ... m-m-guide/
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
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Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Big questions:
1. How to force the Intel 855GM to run at 533MHz FSB? --> it may be more like a PLL mod than a socket pinmod.
2. Will it be stable?
1. How to force the Intel 855GM to run at 533MHz FSB? --> it may be more like a PLL mod than a socket pinmod.
2. Will it be stable?
Planned Purchase: T480s i5-8350 FHD Touch
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Impulse Buy: Thinkpad not named for safety reasons
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Why are the high-end Pentium Ms so expensive?
Looking at feebay, ie: Pentium M 765 (top processor for T40 - T42 series with Dothan core and 400MHz bus) is 4 times more expensive than Pentium M 755 (2GHz vs 2.1GHz). The same is for Pentium M 770 vs. 780 (2.13GHz vs 2.26GHz). For my T40 project, I currently have Pentium M 745 (Dothan 2MB, 400MHz, 1.8GHz) and considering $10 Pentium M 755. Is it worth upgrade?
Looking at feebay, ie: Pentium M 765 (top processor for T40 - T42 series with Dothan core and 400MHz bus) is 4 times more expensive than Pentium M 755 (2GHz vs 2.1GHz). The same is for Pentium M 770 vs. 780 (2.13GHz vs 2.26GHz). For my T40 project, I currently have Pentium M 745 (Dothan 2MB, 400MHz, 1.8GHz) and considering $10 Pentium M 755. Is it worth upgrade?
Current: R51e, X240
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
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- Sophomore Member
- Posts: 131
- Joined: Mon Sep 01, 2014 10:06 pm
- Location: Danbury, CT, United States of America
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Supply and demand. These products are out of production and have been for nearly a decade.lukee wrote:Why are the high-end Pentium Ms so expensive?
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
The other part of the equation is that all "top-end" CPUs that enable one to max out a particular platform (T7600, X9000, 2960XM to name but a few) always carry a premium when it comes to the price even if their performance is quite similar to the next CPU in line.sdfox7 wrote:Supply and demand. These products are out of production and have been for nearly a decade.lukee wrote:Why are the high-end Pentium Ms so expensive?
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Nice to see someone still messing with these great old dinosaurs. I've actually done this thing many times in the past on several T40 units and never had an issue with stability or reliability if only the CPU can handle 533MHz FSB.
To make the board run at 533MHz FSB you will need to short the second and third leg of the PLL chip, counting from up left corner. I have used a fine tip soldering iron and a tiny ball of solder but there are other methods to do it as well.
As for the CPU I've used the cheap 400MHz FSB Dothans of 1.5GHz, 1.6GHz and 1.7GHz which will work after the mod at 2GHz, 2.13GHz and 2.26GHz respectively. The success rate varies though. With the 1.5GHz my success rate has been full 100 percent, 1.6GHz something between 80-90 percent but 1.7GHz only about 40 percent. With the success rate I mean that they run perfectly stable without overvolting. Overvolting is easy to do but I'd rather avoid it because it affects the heat and battery life. I've never tried a 1.8GHz chip but you'd definitely need some serious overvolting to make it run stable at 533FSB.
Of course you can also use a real 533FSB Dothan which, besides being guaranteed to work, would give you PAE support and usually better undervolting results.
With T40 you don't need to worry about the RAM at all; I've had 100 percent success rate even with the original "Mosel vitec" 256/512MB sticks. After the mod they will run at 177MHz (DDR-354) if my memory serves...
For the operating system I'd recommend a stripped down Windows 7 with ati display driver version 6.14.10.6606. I've tried many light weight Linux distros on T40 and many of them do beat Windows in boot times but once the system is up and running it's surprisingly almost always been Win7 which offers the smoothest overall operation and most notably the best video performance. However don't forget to flash the latest BIOS and embedded controller first, I recall having some strange issues with Win7 and an older BIOS version...
A speedy hard drive does make a big difference too. As far as I know Samsung HM160HC is the fastest IDE drive and I've used it with good results. Despite being only 5400RPM drive it actually outperforms most of the 7200RPM IDE drives. I also use PerfectDisk under Windows to defrag the drive and it does make a noticeable difference in performance, especially with these old and slow drives.
Hope this was helpful
To make the board run at 533MHz FSB you will need to short the second and third leg of the PLL chip, counting from up left corner. I have used a fine tip soldering iron and a tiny ball of solder but there are other methods to do it as well.
As for the CPU I've used the cheap 400MHz FSB Dothans of 1.5GHz, 1.6GHz and 1.7GHz which will work after the mod at 2GHz, 2.13GHz and 2.26GHz respectively. The success rate varies though. With the 1.5GHz my success rate has been full 100 percent, 1.6GHz something between 80-90 percent but 1.7GHz only about 40 percent. With the success rate I mean that they run perfectly stable without overvolting. Overvolting is easy to do but I'd rather avoid it because it affects the heat and battery life. I've never tried a 1.8GHz chip but you'd definitely need some serious overvolting to make it run stable at 533FSB.
Of course you can also use a real 533FSB Dothan which, besides being guaranteed to work, would give you PAE support and usually better undervolting results.
With T40 you don't need to worry about the RAM at all; I've had 100 percent success rate even with the original "Mosel vitec" 256/512MB sticks. After the mod they will run at 177MHz (DDR-354) if my memory serves...
For the operating system I'd recommend a stripped down Windows 7 with ati display driver version 6.14.10.6606. I've tried many light weight Linux distros on T40 and many of them do beat Windows in boot times but once the system is up and running it's surprisingly almost always been Win7 which offers the smoothest overall operation and most notably the best video performance. However don't forget to flash the latest BIOS and embedded controller first, I recall having some strange issues with Win7 and an older BIOS version...
A speedy hard drive does make a big difference too. As far as I know Samsung HM160HC is the fastest IDE drive and I've used it with good results. Despite being only 5400RPM drive it actually outperforms most of the 7200RPM IDE drives. I also use PerfectDisk under Windows to defrag the drive and it does make a noticeable difference in performance, especially with these old and slow drives.
Hope this was helpful
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- Senior Member
- Posts: 817
- Joined: Thu Sep 29, 2005 6:18 am
- Location: Seattle, WA
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
This is why I $ cost average everything I purchase. It comes down to how badly you want to have the fastest processor of that generation. I would call it good at 2ghz myself, but that is just me. The performance increase between 2ghz and 2.26ghz is not a big boost. Going from 1.5-1.6ghz to 2ghz+ is a significant difference.lukee wrote:Why are the high-end Pentium Ms so expensive?
Looking at feebay, ie: Pentium M 765 (top processor for T40 - T42 series with Dothan core and 400MHz bus) is 4 times more expensive than Pentium M 755 (2GHz vs 2.1GHz). The same is for Pentium M 770 vs. 780 (2.13GHz vs 2.26GHz). For my T40 project, I currently have Pentium M 745 (Dothan 2MB, 400MHz, 1.8GHz) and considering $10 Pentium M 755. Is it worth upgrade?
T43p,T61,X200,X200s,x201,T500,W500,T510,T410,T410s,T420s,T430,T430s
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- Joined: Mon Sep 01, 2014 10:06 pm
- Location: Danbury, CT, United States of America
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Lately I have been buying more goods on Amazon than eBay. It just seems like eBay has gotten ridiculous, and of course the seller has to charge higher prices because of the eBay fees.lukee wrote:Why are the high-end Pentium Ms so expensive?
Looking at feebay, ie: Pentium M 765 (top processor for T40 - T42 series with Dothan core and 400MHz bus) is 4 times more expensive than Pentium M 755 (2GHz vs 2.1GHz). The same is for Pentium M 770 vs. 780 (2.13GHz vs 2.26GHz). For my T40 project, I currently have Pentium M 745 (Dothan 2MB, 400MHz, 1.8GHz) and considering $10 Pentium M 755. Is it worth upgrade?
Here's a new Pentium M 765 on Amazon for only $10: http://www.amazon.com/gp/offer-listing/ ... dition=new
You can get a Pentium 780 on Amazon for around $30: http://www.amazon.com/s/ref=nb_sb_noss_ ... tium+m+780
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Problem in Linux are graphics drivers. As there is no support for legacy GPUs in current fglrx (proprietary) AMD driver, we mostly rely on opensource driver which provides only 10-20% performance in compare with the proprietary driver. This is the reason why Windows 7 works better. However, Windows systems are usually getting slower over the time - Linux systems don't.PuuFa wrote: For the operating system I'd recommend a stripped down Windows 7 with ati display driver version 6.14.10.6606. I've tried many light weight Linux distros on T40 and many of them do beat Windows in boot times but once the system is up and running it's surprisingly almost always been Win7 which offers the smoothest overall operation and most notably the best video performance. However don't forget to flash the latest BIOS and embedded controller first, I recall having some strange issues with Win7 and an older BIOS version...
A speedy hard drive does make a big difference too. As far as I know Samsung HM160HC is the fastest IDE drive and I've used it with good results. Despite being only 5400RPM drive it actually outperforms most of the 7200RPM IDE drives. I also use PerfectDisk under Windows to defrag the drive and it does make a noticeable difference in performance, especially with these old and slow drives.
Hope this was helpful
HDD: I know that HM160HC is the fastest 2.5" IDE HDD thanks to the single platter design with high density. As I have a source of the free Fujitsu and 7K100 80GB hard drives, I will not go to purchase that Samsung. Also, I have had this HM160HC in my old T43p which is serving to friend of mine currently, I wouldn't buy this one as the HDD got some bad sectors after ~2 years of the service (HDD bought as new). I believe that classic HDDs (Fujitsus, Hitachis, Toshibas) are more reliable.
Current: R51e, X240
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
I agree. Graphics driver is indeed the culprit here which makes Win7 to run better on T40. Apparently Radeon 7500 is just too old and poorly supported even by the opensource driver nowadays. Maybe an older driver version would work better but my experience and knowledge in Linux is not even nearly enough to mess with those things. However on slightly newer systems such as T43 and some T42 models (with a better graphics chip) Linux actually runs better than Win7 does.Problem in Linux are graphics drivers. As there is no support for legacy GPUs in current fglrx (proprietary) AMD driver, we mostly rely on opensource driver which provides only 10-20% performance in compare with the proprietary driver. This is the reason why Windows 7 works better. However, Windows systems are usually getting slower over the time - Linux systems don't.
Lucky man, you got a free source of such decent hard drives? Anyway, I just thought to mention about this drive in case if you were not aware of it. Sorry to hear that you've got a bad one. I've actually encountered several bad Fujitsus but to be honest I don't know if they were abused by the previous owner. Hitachis on the other hand seem to be very reliable, never seen a bad one yet.HDD: I know that HM160HC is the fastest 2.5" IDE HDD thanks to the single platter design with high density. As I have a source of the free Fujitsu and 7K100 80GB hard drives, I will not go to purchase that Samsung. Also, I have had this HM160HC in my old T43p which is serving to friend of mine currently, I wouldn't buy this one as the HDD got some bad sectors after ~2 years of the service (HDD bought as new). I believe that classic HDDs (Fujitsus, Hitachis, Toshibas) are more reliable.
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
If you look at the actual listing, it's a 755 and not a 765...sdfox7 wrote: Here's a new Pentium M 765 on Amazon for only $10: http://www.amazon.com/gp/offer-listing/ ... dition=new
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
Cheers,
George (your grouchy retired FlexView farmer)
One FlexView to rule them all: A31p
Abused daily: T520, X200s
PMs requesting personal tech support will be ignored.
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Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Georgeajkula66 wrote:If you look at the actual listing, it's a 755 and not a 765...sdfox7 wrote: Here's a new Pentium M 765 on Amazon for only $10: http://www.amazon.com/gp/offer-listing/ ... dition=new
A typo on my part, but most of those are in China so you'd have to wait longer to receive if if you live in the States.
Here's a nice 2.13GHz Pentium M 770 from OH, only $15.49: http://www.amazon.com/gp/offer-listing/ ... tium+m+770
Amazon seems more competitive lately. Or I am just now realizing it.
ThinkPad 600E (Win98); T23 (WinNT 4.0); T41 (Win2000); T61p (WinXP)
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista
My name is Stephen Fox. I am a '18 BBA and '20 MBA student at WCSU.
Disable Google Chrome End of Support Infobar on Windows XP/Vista
Re: New project: ThinkPad T40 mobo to work with 533MHz Dothan CPUs?
Project is completed.
Final configuration is:
Pentium M Dothan 1.8GHz 400MHz FSB
T40-based motherboard with Radeon 7k5 GPU
Long fan/heatsink is also covering the GPU
1GB DDR RAM (awaiting 2x 1GB kit from China)
80GB Fujitsu MHV2080AH (very silent & relatively fast drive)
802.11b/g Atheros WiFi card (thanks for the no-1802 hack)
14.1" XGA screen with "T41" sticker
DVD-RW drive
Debian 8 Jessie operating system
9-cells extended battery (unfortunately only with Sanyo cells)
Almost in the mint condition, only shine is visible slightly on the keyboard and in the LCD lid corners.
The system runs perfectly cool and fan is being engaged only under heavier load.
Final configuration is:
Pentium M Dothan 1.8GHz 400MHz FSB
T40-based motherboard with Radeon 7k5 GPU
Long fan/heatsink is also covering the GPU
1GB DDR RAM (awaiting 2x 1GB kit from China)
80GB Fujitsu MHV2080AH (very silent & relatively fast drive)
802.11b/g Atheros WiFi card (thanks for the no-1802 hack)
14.1" XGA screen with "T41" sticker
DVD-RW drive
Debian 8 Jessie operating system
9-cells extended battery (unfortunately only with Sanyo cells)
Almost in the mint condition, only shine is visible slightly on the keyboard and in the LCD lid corners.
The system runs perfectly cool and fan is being engaged only under heavier load.
Current: R51e, X240
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
Previous: T420, T400, T43p Flexview, T40, R52, T43p 14"
My first ThinkPad was 570
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