03-09-2012 10:42 AM
03-12-2012 09:37 AM
Intel i7 is more advance and fast then i5.
I suggest you to go for i7 processor.
If you have some doubts and as per your requirement, you may try using the Intel tool which help in deciding the good processor.
03-12-2012 04:29 PM
03-12-2012 11:53 PM
03-13-2012 01:40 AM
T420s is very good piece of hardware but fan noise is really anoying on T420s so I would recommend you to test it before making a purchase. It depends on your working environment but I'm getting crazy when working evening/night and listening the fan rotating at max speed when writing a document in Word.
Unfortunately, Lenovo gave up and not willing to fix the issue either by software (BIOS update) or by replacing fan -- there is very very long thread about this...