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Retro Thinkpad T61p Build! Warning PICS!

T60/T61 series specific matters only
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storm-chaser
Posts: 33
Joined: Fri Aug 19, 2011 6:46 pm
Location: Schenectady, NY

Re: Retro Thinkpad T61p Build! Warning PICS!

#31 Post by storm-chaser » Sun Apr 29, 2018 9:12 pm

ac12 wrote:
Tue Apr 24, 2018 12:34 am
How is the computer standing up over time?
Putting RAM modules and CPUs on a beadspread is just asking for trouble.
There is a reason the manufacturers specify static safe handing procedures.
These things are static sensitive, and damage is sometimes subtle.
Update ---> I had to replace the wireless card today. This is the Intel 4965AGN unit and I noticed that after a couple hours of use it would randomly disconnect me from the wireless network (Skynet) and I would have to reboot. Power-cycling the network card would not help. Another issue was after waking up the computer from a sleep state the wireless card would automatically boot me from the network and the only way to resolve this was to reboot the machine. I thought this could be a potential ESD issue, however, after discussing with the previous owner he said this was a known issue with the machine and he thought that it was simply a driver issue. So I replaced with a good spare and so far so good! No random disconnects, no problems!

EDIT: I had to bump the voltage @ 3.2ghz clock speed up to 1.1875v. I was getting occasional BSODs at the lower voltage of 1.1625. Temps run anywhere from 100-110*F at idle and 140-150 under average load. Still well within specifications.
AMD Phenom II 965 @ 4.1Ghz, 8GB DDR3 1600, SSD
AMD Athlon X2 5600+, 4GB DDR2 800 *Incoming AMD X2 6000+ CPU*
Lenovo T61p 15.4" - Core 2 extreme X9000 CPU @ 4.0Ghz, SSD
Lenovo T61 14.1" - Core 2 Duo T9300 @ 2.7Ghz
*Incoming* - Biostar TA970 mobo * - Project "HexaCore" Underway

storm-chaser
Posts: 33
Joined: Fri Aug 19, 2011 6:46 pm
Location: Schenectady, NY

Re: Retro Thinkpad T61p Build! Warning PICS!

#32 Post by storm-chaser » Mon May 07, 2018 7:37 pm

https://image.ibb.co/eOuh3n/Lenovo_T61beastmode.png

After some further tweaking I was able to hit 4.2Ghz with some success. However, as soon as CPU utilization goes above 10 % the temps spike no matter what fan profile I'm running. Even when it's set at 4500rpm I'm having difficulty removing the heat fast enough. This seems to parallel the Chernobyl disaster - when operators in the control room intentionally shut down all safety measures to perform a turbine run-down or bleed down to measure residual power output , they put the reactor in an unsafe configuration which lead to xenon poisoning and a positive void coefficient, priming the reactor to embark on a positive feedback loop, effectively boiling off the remaining coolant from within the reactor itself thus leading to two massive steam explosions, flipping the reactor's giant 2,000-ton concrete lid into the air like a coin. White-hot chunks of the nuclear core rained down on adjacent buildings, setting fires and peppering the ground outside, resulting in a nuclear-graphite fire burned for days and near total destruction of the reactor core resulting in massive releases of radioactive material into the environment.

For anyone that's interested here is a pretty good summary of the disaster itself -- credits to Wikipedia:
"The subsequent course of events was not registered by instruments; it is known only as a result of mathematical simulation. Apparently, the power spike caused an increase in fuel temperature and steam buildup, leading to a rapid increase in steam pressure. This caused the fuel cladding to fail, releasing the fuel elements into the coolant, and rupturing the channels in which these elements were located.
Then, according to some estimations, the reactor jumped to around 30,000 MW thermal, ten times the normal operational output. The last reading on the control panel was 33,000 MW. It was not possible to reconstruct the precise sequence of the processes that led to the destruction of the reactor and the power unit building, but a steam explosion, like the explosion of a steam boiler from excess vapor pressure, appears to have been the next event. There is a general understanding that it was explosive steam pressure from the damaged fuel channels escaping into the reactor's exterior cooling structure that caused the explosion that destroyed the reactor casing, tearing off and blasting the upper plate, to which the entire reactor assembly is fastened, through the roof of the reactor building. This is believed to be the first explosion that many heard. This explosion ruptured further fuel channels, as well as severing most of the coolant lines feeding the reactor chamber, and as a result the remaining coolant flashed to steam and escaped the reactor core. The total water loss in combination with a high positive void coefficient further increased the reactor's thermal power.
A second, more powerful explosion occurred about two or three seconds after the first; this explosion dispersed the damaged core and effectively terminated the nuclear chain reaction. This explosion also compromised more of the reactor containment vessel and ejected hot lumps of graphite moderator. The ejected graphite and the demolished channels still in the remains of the reactor vessel caught fire on exposure to air, greatly contributing to the spread of radioactive fallout and the contamination of outlying areas.
According to observers outside Unit 4, burning lumps of material and sparks shot into the air above the reactor. Some of them fell onto the roof of the machine hall and started a fire. About 25 percent of the red-hot graphite blocks and overheated material from the fuel channels was ejected. Parts of the graphite blocks and fuel channels were out of the reactor building. As a result of the damage to the building an airflow through the core was established by the high temperature of the core. The air ignited the hot graphite and started a graphite fire.
After the larger explosion, a number of employees at the power station went outside to get a clearer view of the extent of the damage. One such survivor, Alexander Yuvchenko, recounts that once he stopped outside and looked up towards the reactor hall, he saw a "very beautiful" LASER-like beam of light bluish light caused by the ionization of air that appeared to "flood up into infinity".
Lets hope my laptop isn't next ;)
AMD Phenom II 965 @ 4.1Ghz, 8GB DDR3 1600, SSD
AMD Athlon X2 5600+, 4GB DDR2 800 *Incoming AMD X2 6000+ CPU*
Lenovo T61p 15.4" - Core 2 extreme X9000 CPU @ 4.0Ghz, SSD
Lenovo T61 14.1" - Core 2 Duo T9300 @ 2.7Ghz
*Incoming* - Biostar TA970 mobo * - Project "HexaCore" Underway

storm-chaser
Posts: 33
Joined: Fri Aug 19, 2011 6:46 pm
Location: Schenectady, NY

Re: Retro Thinkpad T61p Build! Warning PICS!

#33 Post by storm-chaser » Mon May 07, 2018 9:13 pm

Not sure why I cannot edit the last post.

I resized the picture to conform to the rather extensive forum image restrictions:

Huge-size PNG: https://image.ibb.co/dC9ApS/Lenovo_T61beastmode.png

PNG converted to much smaller-size JPG: https://imgur.com/a/dVvGiDd


Admin warning:
that original picture was WAY too big (1,387.38 KB), that's why the tags were removed.
Please read the Forum Rules again, especially Section 5: https://forum.thinkpads.com/viewtopic.php?f=16&t=14339
Even after your "resizing", your picture is still too big: 627.45 KB, allowed is 50 KB.
Hint: just only converting it from .png to .jpg would reduce its size already from 627.45 KB to 69.8 KB (see above).
As a linked picture, checking 69 KB [e.g. via smartphone] would be much more palatable than 627 KB.
And your previous (and this) post are blocked from editing exactly because of you ignoring the Forum Rules.
AMD Phenom II 965 @ 4.1Ghz, 8GB DDR3 1600, SSD
AMD Athlon X2 5600+, 4GB DDR2 800 *Incoming AMD X2 6000+ CPU*
Lenovo T61p 15.4" - Core 2 extreme X9000 CPU @ 4.0Ghz, SSD
Lenovo T61 14.1" - Core 2 Duo T9300 @ 2.7Ghz
*Incoming* - Biostar TA970 mobo * - Project "HexaCore" Underway

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