Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

T61 fans 42W2821 vs 42W2820 vs. ???

T60/T61 series specific matters only
Post Reply
Message
Author
ieure
Posts: 5
Joined: Sun May 12, 2019 9:34 pm
Location: Portland, OR

T61 fans 42W2821 vs 42W2820 vs. ???

#1 Post by ieure » Sat Jan 25, 2020 4:34 pm

I have a T601 Frankenpad with failing nVidia GPU. I was able to source a T61 42W7648 motherboard with integrated graphics only on Aliexpress, but it came without a fan. My machine has the 42W2820 heatsink for the discrete GPU, and per the HMM the integrated graphics model takes a 42W2821. I haven't been able to find one in the usual places, and the few photos I've seen all look substantially the same as what I already have -- though I haven't found a photo that I 100% believe is the 42W2821.

Is it safe to use the dGPU fan on the iGPU motherboard? I assume it ought to be, the part that would connect to the dGPU would just hang over the part of the PCB where is isn't, but figured I should ask before trying. I'm wondering if the different FRUs are the same physical part, but the dGPU FRU has a thermal pad installed, or something like that.

Should I even be bothering with that, or should I go the T500/W500 fan route instead?

RealBlackStuff
Admin Emeritus
Admin Emeritus
Posts: 21173
Joined: Mon Sep 18, 2006 5:17 am
Location: Dublin, Éire
Contact:

Re: T61 fans 42W2821 vs 42W2820 vs. ???

#2 Post by RealBlackStuff » Sun Jan 26, 2020 3:37 am

That dGPU fan works perfectly on iGPU (but not the other way around).
Make sure to clean up and refresh the thermal paste.
Don't forget to apply Middleton's BIOS.
Lovely day for a Guinness! (the Real Black Stuff). And pigs CAN fly!
Check out The Boardroom for Parts, Mods and Other Services.

wujstefan
ThinkPadder
ThinkPadder
Posts: 1256
Joined: Fri Mar 04, 2011 8:38 am
Location: Tarnow, Poland

Re: T61 fans 42W2821 vs 42W2820 vs. ???

#3 Post by wujstefan » Sun Jan 26, 2020 3:54 am

Well looking for a T61 mobo you could post in here first.
I still have a couple of T61 dGPU mobos up for sale.
Too many thinkpads not enough time!
(stable under reduction)

ieure
Posts: 5
Joined: Sun May 12, 2019 9:34 pm
Location: Portland, OR

Re: T61 fans 42W2821 vs 42W2820 vs. ???

#4 Post by ieure » Thu Jan 30, 2020 7:43 pm

Following up, I put Middleton's BIOS on today and swapped over the T7200 CPU + DGPU fansink from my old motherboard. Everything is working great, the intermittent flashing of corrupt graphics is gone, and it's running silent and cool under light load. The GPU on the old board was around 60-70C at all times, which made the fan blast constantly, and replacing the thermal pad/paste did nothing to help.

Radioguy
ThinkPadder
ThinkPadder
Posts: 1122
Joined: Fri Feb 29, 2008 2:45 pm
Location: New York, New Yorrrrrk

Re: T61 fans 42W2821 vs 42W2820 vs. ???

#5 Post by Radioguy » Thu Jan 30, 2020 9:20 pm

ieure wrote:
Sat Jan 25, 2020 4:34 pm
Should I even be bothering with that, or should I go the T500/W500 fan route instead?
Heatsinks aside, I recall researching the same matter aways back and and discovering the latter T400 era (and T500 era, I'd surmise) Furukawa fan models to be more durable than the Toshiba ones. (I forget the FRU)
240, 380ED, 760C, 760CD, 760E, 760EL, 760LD, 760LD, 760XD, 760XD, A30, E520, G40, I1300, P53, R31, R40, R51, R52, R61, T20, T30, T40, T41, T42, T43, T43P, T60, T61, T400, T410, T420, T430, T460, X1C2, X30, X40, X220, X301 and on, and on, and on...

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad T6x Series”

Who is online

Users browsing this forum: No registered users and 21 guests