Bookmark this
http://www.notebookcheck.net/Mobile-Graphics-Cards-Benchmark-List.844.0.html
Top 3
1 NVIDIA GeForce GTX 880M SLI
2 NVIDIA GeForce GTX 780M SLI
3 AMD Radeon R9 M290X Crossfire
The single 880M is down at 13
Tho frankly, I'd skip the store bought pre-configured models and have ya laptop built to order by a custom Clevo Distributor.
http://forum.notebookreview.com/sager-clevo/91510-clevo-guide-v2-0-faq-reseller-info.html
CLEVO is a large Taiwanese computer company specializing in laptops. While the Clevo brand name is perhaps not widely known, their products are re-branded and sold by known boutique brand OEMs (Original Equipment Manufacturers)… notably Sager, VoodooPC, Falcon Northwest, Eurocom, etc. They are also considered (by whoever knows about notebooks) to design and manufacturer the best of the best notebooks in terms of superior build quality and innovative designs.
I find it useful to deal with the same person from pre-sales thru sales then tech support / warranty issues if they occur.... don't get that from the big behemoths like Dell (owns Alienware).
I have bought over a dozen to date and not one user has been disappointed. I buy mine at http://www.lpc-digital.com/
Xoticpc.com is another popular site