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T420 Upgrade Options for CPU/Memory

T400/410/420 and T500/510/520 series specific matters only
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Farro
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Joined: Fri Feb 15, 2013 8:31 am
Location: New Zealand

T420 Upgrade Options for CPU/Memory

#1 Post by Farro » Tue Jan 24, 2017 4:19 am

Hi all,
i have been searching on this and other forums.
is there some good upgrades recommended for T420 ?
is is possible to go to 32GB ?
i7-3632QM cpu possible ?

thanx all

RealBlackStuff
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Re: T420 Upgrade Options for CPU/Memory

#2 Post by RealBlackStuff » Tue Jan 24, 2017 4:29 am

mSATA in WWAN slot as main OS drive, drive-bay used for storage disk 1, ultrabay used for storage disk 2.
Max 16GB RAM
AFAIK all Sandy Bridge and Ivy Bridge CPUs should work in a T420/T520 (non-s).
Worth it? Probably not.
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Farro
Posts: 44
Joined: Fri Feb 15, 2013 8:31 am
Location: New Zealand

Re: T420 Upgrade Options for CPU/Memory

#3 Post by Farro » Tue Jan 24, 2017 4:41 am

Thank you RealBlackStuff..
I guess will keep looking for the W530 and just keep this with the others as backup.

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Re: T420 Upgrade Options for CPU/Memory

#4 Post by ZaZ » Thu Jan 26, 2017 4:53 am

I believe Intel specifically stated Sandy Bridge to Ivy Bridge was a no-go for mobile CPUs, so Ivy Bridge CPUs won't work in Sandy Bridge notebooks. Besides you'd need a BIOS update to make it happen, which I have not heard of anyone doing, including Lenovo, though I don't see everything.
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RealBlackStuff
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Re: T420 Upgrade Options for CPU/Memory

#5 Post by RealBlackStuff » Thu Jan 26, 2017 7:19 am

Apparently Ivy Bridge on a T420 is possible, but rather limited.
You need a Coreboot BIOS: https://www.coreboot.org/Board:lenovo/t420

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Re: T420 Upgrade Options for CPU/Memory

#6 Post by TonyJZX » Thu Jan 26, 2017 8:20 am

I heard some german fellows have a hacked bios that allows 3 series processors to go into the 2 series motherboards.

I dont believe the 3 was a huge update to 2 in any case.

Farro
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Location: New Zealand

Re: T420 Upgrade Options for CPU/Memory

#7 Post by Farro » Fri Jan 27, 2017 11:10 pm

Thank you all ..
so after evaluating many options , looks like i will be taking the coreboot plunge.

Arranging a Raspberry Pi , SOIC clip , jumper cables and CPU now .. will let you guys know how it goes .

thanx

Farro
Posts: 44
Joined: Fri Feb 15, 2013 8:31 am
Location: New Zealand

Re: T420 Upgrade Options for CPU/Memory

#8 Post by Farro » Sat Jan 28, 2017 11:25 am

So did some math
what do you guys think ? worth going through the upgrade on a T420 ? it already has an SSD installed
so i am skipping that .. but the rest comes to

CPU : i7-3720QM 152+28(shipping) = 180$
RAM : (16GB) 125+15(shipping) = 140$
SOIC CLIP = 4$
CABLES Jumper = 3$
RASPBERRY = 81$


408$ NZD or 297 FREEDOM DOLLARS (USD)



what sucks is that i will be still at 16GB and not 32 as i wanted .

looking for your thoughts o wise ones

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Re: T420 Upgrade Options for CPU/Memory

#9 Post by jaspen-meyer » Tue Feb 28, 2017 8:32 am

I have an i5-3210m in my T420 (running coreboot 4.5).
(large picture) http://www.jesseo.com/thinkpads/t420-i5-3210m.jpg

edit: now running a i7-3612QM.

You listed $81 for the raspberry. You can save some money by buying a used, older model B.
T420 i7 3612QM seabios; T420 i7 3630QM; T400 Q9100 seabios; T61 P9600; T60 libreboot; x62; x60s libreboot, led; x24 xiphmont led

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