Assuming that it is the same as what I found here:
http://shop.lenovo.com/ISS_Static/merchandising/US/PDFs/K100_tech_specs.pdf
the most it will do would be the fastest C2Quad you can find. Something like this (except that they are out of stock):
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115130

Looking at other boards with the same chipset as what I found in the first link it 'should' take the C2Quads. Now as to if the bios will do anything with it or not is annother matter, and I would contact Lenovo to see if it will work.

If it will then you should expect a huge speed increase (one of the few times I would reccomend a CPU upgrade in fact):
http://www.anandtech.com/bench/Product/70?vs=49

Still not going to get you into the modern era of core i5 and i7, but you can expect a 2-3x increase in performance compared to where you are at now, and if that is enough then it would be a good investment.
 

joseph795

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I want to upgrade the CPU ,at Lenovo I did not get the right answer , also I have 2 Acer Monitors ,for the AL1916w I got the driver , but for the X213W the is no driver available at Acer website, I will never buy again Acer products
 

hilltopmonk

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I want to upgrade the CPU ,at Lenovo I did not get the right answer , also I have 2 Acer Monitors ,for the AL1916w I got the driver , but for the X213W the is no driver available at Acer website, I will never buy again Acer products

It means there isn't one needed, the default will work properly. Actaully you almost NEVER need a specific driver for a monitor these days.

As to your upgrading CPU, you may be wasting your money. Also, do you mean you want to upgrade the Processor or the whole computer (not including the monitor, speakers, mouse or keyboard)

Why are you upgrading? What do you want to do with the PC?
 

joseph795

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I ordered Intel E7600 from from Amazon , I will put together a more powerfull computer the net 60 days ,I 'm reading a lot about Virtualization right now