Is the Razer Blade laptop overkill?

[KHg8m3r]

http://www.dell.com/us/p/inspiron-15-7559-laptop/pd?ref=PD_OC
No, one of these, cause the one you linked to uses the low voltage CPU, which can throttle itself while playing Dolphin (you don't want that).

The 15" 7000 has dual heatsinks, which allows the CPU and GPU to be cooled separately, preventing one from getting so hot that it throttles the other.
The XPS has only 1 fan for both the CPU and GPU, so if one gets too hot the other will throttle back (this is bad)