Lenovo y510p i7 version vs dell 17r 7737? Which one do you think is better?

Lenovo has better processor but dell is cheaper. I would like my laptop to play the latest games atleast in medium settings and give a decent fps.So which one do you suggest.(I definitely want a laptop, not a desktop).Other alternatives are welcomed.

Lenovo m, y gaming laptop is aa lenovo;e

Those laptops can have multiple different configurations, so you'll need to be more specific. I think ASUS makes more laptops targeted towards gaming, but something to keep in mind is that an i7 processor is usually unnecessary for gaming, so I wouldn't make that a factor in your decision.

Lenovo
http://www.amazon.in/...00HR203XI/

Dell
http://www.ebay.in/itm/331225933627

These are the exact laptops.
I think asus doesn't have any laptop similar to these. Not only for gaming, i also use softwares like Catia, Ansys… So i thought i7 would be necessary.

What do you suggest?