7730m

I hv i7 8 gb ram ,n gpu - 7730m on my lappy ..can i play crysis 3 on ultra setting ?

i5-3210M 2.5 ghz upto 3.1 ghz or i7-3632QM 2.2 ghz upto 3.2 ghz graphic card amd 7730m How much difference would i7 make?

Im stuck with dell special edition inspiron 15r i5 and i7 models. I know i7 is much better for multitasking but does it make big difference in gaming? Because I will be playing lot of latest games at medium settings. If not I could save around 5k which I can use to add backlight keyboard 8-)...