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L420 Modding questions

SL300/SL400/SL500, L400-L420 and L500-L520 Series
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mad_man
Posts: 1
Joined: Thu Jun 17, 2021 6:57 pm
Location: Sydney, NSW Australia

L420 Modding questions

#1 Post by mad_man » Thu Jun 17, 2021 7:09 pm

hello all

i have started modding my L420.. absolutely love this machine it keeps up with my new l480 thinkpad that has a 8th gen intel cpu...

i was going to go with the i7-2630QM , 4 core 8 thread cpu which is a 45 w TDP

the machine comes with a i5 35W TDP.. i have been reading and alot of people have done the 45w I7-2630 QM mod and temps have been ok.

im thinking of going for a 55W TDP i7-2920XM it has a faster clock rate and a bigger cache ...
i will buy the L412 heatsink and fan apparently it is larger.
i going to add a extra fan within the other board and add a extra external fan/blower on the outside of the case ( sunon mighty mini),

im wondering if anyone has ever done a 55w CPU in a 35w tdp rated laptop.

also wondering if anyone has come across a fan that fits in the express card slot.

Gonzaleitor
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Joined: Thu Nov 10, 2022 4:01 pm
Location: Buenos Aires, Argentina

Re: L420 Modding questions

#2 Post by Gonzaleitor » Mon Aug 07, 2023 8:10 pm

I can't answer about mucho of what You asked. But is it worth it to put the 2920 ? Is the performance that mucho better?

RealBlackStuff
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Re: L420 Modding questions

#3 Post by RealBlackStuff » Mon Aug 07, 2023 9:56 pm

Who needs another toaster?
Maybe the larger L520 can handle it, but it will be way too hot in the smaller L420.
Instead of thermal paste, use a Honeywell PTM7950 thermal pad.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.

PS: the old Boardroom website is still available on the Wayback Machine
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axur-delmeria
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Re: L420 Modding questions

#4 Post by axur-delmeria » Mon Aug 07, 2023 10:05 pm

Not a good idea IMO. The TDP of the 2920XM is 57% higher than a 35w dual-core i5, the actual max power consumption will be much higher. Most likely outcome: you won't be able to make use of its full potential because it overheats like heck, even with the added fans.
Stick to the 45w
Planned Purchase: T480s i5-8350 FHD Touch
Impulse Buy: Thinkpad not named for safety reasons :lol:
RIP: X220 4291-C91 X61 7676-A24 760XD-U9E :cry:

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