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Lenovo T420 Ivy Bridge Support - i7-3540M
#11
It's Mobile Intel QM67 Express not HM65. There are examples of QM67 laptops supporting ivy bridge, on dell I think.
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#12
(07-07-2015, 03:21 PM)LosSantosPro Wrote: Unfortunately, No. Your Chipset is HM65, Ivy requires HM76/HM77.

also can you check this compatibility list? : http://www.cpu-upgrade.com/mb-Intel_(chi...press.html
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#13
(07-08-2015, 06:53 AM)xantier Wrote:
(07-07-2015, 03:21 PM)LosSantosPro Wrote: Unfortunately, No. Your Chipset is HM65, Ivy requires HM76/HM77.

also can you check this compatibility list? : http://www.cpu-upgrade.com/mb-Intel_(chi...press.html

can try to replace microcode ....but it can not guarantee success ....it is possible that your motherboard is not soldered need power transistors or capacitors....

User is not welcome on these forums after repeated abuse to site infrastructure and user base.  If you receive any unsolicited messages from a user account claiming to be "Oleh" or acting on behalf of Oleh, please disregard.
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#14
I just noticed that there was another thread on this right above mine. Similar details are covered in it:
https://www.bios-mods.com/forum/Thread-L...t-i7-3540M

Except I am looking less for general Ivy Bridge support and mainly for that one specific processor.
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#15
(07-08-2015, 06:48 AM)xantier Wrote: It's Mobile Intel QM67 Express not HM65. There are examples of QM67 laptops supporting ivy bridge, on dell I think.

Are you sure? I'm 99% positive its HM65
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#16
Recent Thinkpads are almost always of the QMx7 variety. This is a screenshot of my T420's mainboard in CPU-Z:


Attached Files Thumbnail(s)
   
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#17
Hi, I think you could find some information about t420 ivy bridge upgrade here:
http://thinkpad-forum.de/threads/170582-...9b7f60194f

Unfortunately it's in german, but chrome translate does well its job in this case ( I don't understand german, but the general meaning it's clear ).
It's a thread about sandy bridge quad upgrade ( which is feasible without any bios/software change ) and faster ddr3 ram, but there're also a lot of posts about ivy bridge.
Long story short, there is a t420 bios mod modified with ivy microcode instructions, but due to the high risk of failure of the operation nobody has tried the trick yet.
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#18
Update:
First attempt. Not successful because of some checksum errors, but they are still working on it.
http://thinkpad-forum.de/threads/170582-...?p=1933664&viewfull=1#post1933664
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#19
(10-06-2015, 06:16 AM)Floris Wrote: Update:
First attempt. Not successful because of some checksum errors, but they are still working on it.
http://thinkpad-forum.de/threads/170582-...?p=1933664&viewfull=1#post1933664

i have an T420 QM67 with 2520M (HD3000) 988B G2 Socket Sandy Bridge, 

i try to upgrade for  i5 3210M (HD4000) ivy Bridge 988B G2 Socket 

but it doesnt work...

i see a compatibility problem on Memory controller 

Someone have a solution?
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#20
Try ti ask ti DeathBrnger He is going to make full time research on CPU and Chipset
compatibility and may be can help You !
I haven't much time to follow all users and arguments as too specifics !
Regards

[size=undefined]Your Brain [/size]. . . . It's the best tool U can use ! Wink
[size=undefined]Don't FLASH the Bios Mod if You get a Size Alert, You risk a Brick !!! [/size]
Donate to me for my work, click here BDM
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