The ones that use the nvidia GT 740M, even with 2 GB of RAM aren't fantastic for gaming unless its simple games like Indie games or much older games. While its fine for Web and graphics design, if its going to be your main computer better to go for something better inside.
What is your budget? Do you prefer HP/Dell? If you're dead set on HP or dell conisder this one
http://store.hp.com/webapp/wcs/stores/servlet/ConfigureView?storeId=10151&catalogId=10051&langId=-1&catEntryId=640654&quantity=1
Under customization select the 1920x1080 screen res and then select 4th generation Intel(R) Core(TM) i7-4510U Dual Core Processor + 4GB NVIDIA GeForce GTX 850M Graphics for CPU.
Should be strong enough to play most games on decent/medium settings, as well as be more than enough for your web/graphics design.