September 26th, 2012, 12:46 AM
i7 is the best,as it has got processing speed as compare to the other processor.
October 16th, 2012, 01:06 AM
Yes you can go for I5 or I7 upgrading your PC to these will increase your laptop speed to new heights.
October 20th, 2012, 12:55 AM
All the processors you have mentioned are from one company intel having just different versions and different speeds and processing all are the advanced versions to the earlier ones so if you ask which among i3, i5 and i7 are best I would probably say i7 is the best of three
April 8th, 2013, 10:01 PM
If you will use for business then i7 is the best.
April 25th, 2013, 12:31 AM
i7 is expensive but that is the best according to me.