1st gen i7 or 2nd gen i5 ?

no doubt 2nd gen i5 is a lot better of it's higher frequency latest lithography.

At those clockrates 1.73Ghz VS 2.3GHz, I would choose the I5, it also hass better onboard graphics, lower power consumption. Although its technically not better.

Give the FULL specs on the 2 laptops and we can help abit better.

The first gen mobile i3/5/7 processors were rather underwhelming, offering significantly lower clocks than their core2 predecessors which certainly did not help in most mobile applications.

The second gen i5/7 processors have much better turbos and in my opinion really hit the mobile performance sweet spot.

Best answer selected by sandeep sharma.

thanks to all for their valuable reviews ....