Hi guys, the new Dell Vostro 5460, i5 3230M, 4GB, GT630M - RM2099, worth the price?

With this spec, can it run Dota 2 at mid setting with 40+ fps?
My consideration is K46CM, Z400 and this.
Cons:
K46CM - Need upgrade RAM, ULV processor, no backlit key, problematic service
Z400 - non-removal battery, quite bulky for me even it is a slim laptop compare to other, key flex quite terrible as I watch the review on the internet
Vostro - non-removal battery, as you say, 1 RAM slot, no backlit key

Pros:
K46CM - Removal battery, exceptional quality, good sound, ODD, cheapest Ultrabook on the market.
Z400 - bang for bucks, back lit key, ODD
Vostro, Nice design, Ultrabook form factor with a full Intel i5 processor, exceptional service, should be good quality (Aluminium), should be good sound (With subwoofer)