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somsay
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Message 1 of 16

L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

Hi I have a L420 and wish to upgrade the cpu to Intel Core i7 processor i7-2630QM with quad-core.

 

right now I just have an i5 core cpu.

 

before i go out and purchase an upgrade, I wanted to ask people on this forum if its ok.

 

on the L420 page here:https://support.lenovo.com/us/en/documents/pd015766

 

it has:

Processor

  • Premiere performance and ultraportability; two spindles
  • Available processors are:

 

  • Intel Core i7 processor i7-2630QM with quad-core
    • DDR3 memory controller (up to 1333MHz), Intel Turbo Boost, Hyper-Threading technology; 6MB cache

so can i upgrade my cpu please anyone?

 

thank you so much.

 

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Message 2 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

Welcome to the forum!

 

Yes, that CPU will work. However, it has a higher TDP than the dual core models so cooling it may be an issue. You will need to ensure you correctly clean the old thermal compound and replace it with a good quality one like Artic Silver 5, Artic Cooling MX-4 or Noctua NT-H1 to name a few...

 

Also make sure to clean the fan's blades using compressed air. When doing this block the fan with your finger to prevent it from spinning to avoid damage.

 

-

 

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somsay
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Message 3 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

thank you so much. i wish you the best.

somsay
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Message 4 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

is it possible to upgrade to a more powerful cpu model? thanks
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Message 5 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

You mean more powerful than the i7-2630QM? The L420 supports Sandy Bridge CPU's, so in theory you could try any of these:

 

  • i7-2670QM (2,20GHz, 6MB L3)
  • i7-2720QM (2.20GHz, 6MB L3)
  • i7-2760QM (2.40GHz, 6MB L3)
  • i7-2820QM (2.30GHz, 8MB L3)
  • i7-2860QM (2.50GHz, 8MB L3)

However the cooling will still remain an issue, and I guess the more powerful the CPU the hotter it will run...

 

Edit: What applications are you planning to run? I can think of few software where quad CPU's would make a notable difference. For normal office/web operations the performance jump won't be that huge.

 

.

 

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somsay
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Message 6 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

hi thank you for your reply you are very nice.

 

I use FL studio and Ableton Live for making music so I need maxium cpu power.

 

but I do not want my laptop to get too hot.

 

which is the safest option for quadcore cpu thank you

somsay
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Message 7 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

Hi I will be running Ableton and FL studio music apps.

I need a fast cpu but I do not want overheating problems.

 

thanks

somsay
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Message 8 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

I would love to upgrade to a

  • i7-2860QM (2.50GHz, 8MB L3) quad core...and I will clean thermal compoud it...

so would this upgrade be safe?

 

thanks

 

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Message 9 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

Well, the procedure is safe, but I personally would be worried about the heat. I took a look at a L420 heatsink and it doesn't look very thick. 

 

My recommendation would be to very careful when applying the thermal paste:

 

  • Clean the old compounds throughly using 100% alcohol from both CPU die and heatsink
  • Make sure you buy a good quality paste (see this thread and also this one)
  • Apply a very thin layer of paste, too much paste is bad! (See the attached picture as example, if you can apply slightly less paste than that, the better, it's a different CPU but the concept is the same)
  • Carefully clean the fan from dust/dust bunnies. Use compressed air and make sure to block the fan to prevent it from spinning
  • Also make sure to follow the HMM steps, battery and AC must be both disconnected

Good luck and keep us posted!

 

CPU.JPG

 

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somsay
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Message 10 of 16

Re: L420 CPU upgrade to Intel Core i7 processor i7-2630QM with quad-core

Thanks for helping me, upgrading to quad core more than doubled my laptop speed and processing. I can work fine now. cheers Smiley Happy

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