CPU Socket Type - X220 (4286-CTO) with Intel Core i5-2520M

Hi,
I just purchased a ThinkPad X220 (model number 4286-CTO) that comes with an Intel Core i5-2520M CPU. It should be delivered in the next couple of weeks.
Can anyone tell me if the motherboard for this model laptop accepts BGA-1023 or Socket G2 processing units?
Thanks

well it is not socket CPU, it is directly soldered to the motherboard, you can't upgrade the CPU on the motherboard.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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X220 4286-CTO can't update new bios

I get the new X220 today and want to update the new bios because the "unexpected CPU throttling mode" problem.
But when i using system auto update, it can't found any new bios(my bios is 1.12) for my system.
So i manually download the 1.17bios from the lenovo websit.
but when i install it, it also failed to refresh and indicate as follow:
The process does not recognize this system.
The process has been canceled.
Could anybody tell me what the problem was?
My system is X220 4286-CTO, but i can't find my type on the web selection. And if I use autodetection,it confuse my system as X220i 4286-CTO.
I want to update to new bios.How can i do?
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hoang0100, my apologies as I haven't understood you clearly...
May be you try flash BIOS via setup after laptop boots?
The BIOS flashing process is simple - just download the BIOS image and Update Utility (in one pack) from Lenovo's web site. Presently the last version of BIOS is 1.17, direct link on US site for your laptop model is here http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS018805.
Download and launch exe file, setup process will start. You'll be promptetd the path where files will be extracted. At the end of installation process you'll be asked to start the flashing process automatically. Close all applications, plug-in AC adapter and start. You'll see the process. Don't do anything on laptop during that process, about one minute. At the end your laptop will be rebooted. That's end. Also you'll get backup copy of your current BIOS, that file has name bios.bak.
Note you can flash new BIOS or re-flash manually by launching winflash.exe.
Cheers
x220 | i5-2520m | Intel ssd 320 series | Gobi 2000 3G GPS | WiFi
x220 | i5-2520m | hdd 320 | Intel msata ssd 310 series | 3G GPS | WiFi
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The p55 stands for the chipset , so it's a p55 chipset and no x58 chipset ,.
The p55 is only compatible with cori i5 and core i7 starting with 8... ( 860 , 870) it support only dual channel memory and not triple like the core i7 9... (920 , 940 , 950 965 ,975).
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Core i7 975    1366    4/8         3.33      3.60      8    130    999
Core i7 950    1366      4/8      3.06      3.46      8    130    562
Core i7 920    1366      4/8      2.66      2.93      8    130    284
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Lynnfield
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Core i7 860    1156      4/8      2.80      3.46      8    95    284
Core i 870s      1156      4/8      2.80      3.46      8    82    337
Core i5 750    1156      4/4      2.66      3.20      8    95    196
Core i5 750s    1156      4/4      2.66      3.20      8    82    259
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Core i5 661    1156      2/4      3.33      3.60      4    73    196
Core i5 660    1156      2/4      3.33      3.60      4    73    196
Core i5 650    1156      2/4      3.20      3.40      4    73    176
Core i5 540    1156      2/4      3.06      none      4    73    143
Core i5 530    1156      2/4      2.93      none      4    73    123
Pentium G9650    1156      2/2      2.80      none      4    73    8.
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core i5 Lynnfield (4cores)750 /750s= p55 chipset = NO hyper-treathing=socket 1156=dual channel memory DDR3
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Core i5 clarkdale (2cores)= p55 chipset = Hyper-treathing = socket 1156.=dual channel memory DDR3
All have turbo mode except the Core i5 540, Core i5 530 , Pentium G9650.
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CPU Socket Type - X220 (4286-CTO) with Intel Core i5-2520M

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