A properly configured system (which includes hardware, OS, drivers, and applications) should not "freeze". But, to your question, you are considering processors which are three generations and three years apart:
You will find graphics support on the older processor something to be concerned about.
In my opinion, go for the later processor and memory. And, while disk size may not be important to you, disk speed should be. I would consider a SSD in this case since size is not much of a concern. And, I would probably consider other manufacturers in addition to Lenovo.
Just my opinion.
This message was posted on behalf of Intel Corporation
Good information from Al.
Besides checking on ark.intel.com you may want to try the link below: