MSI GTX 1080 Seahawk &i7 6700K PSU help

[Specs]

Hi folks,

I'm Building my first gaming rig for a few years and I'm completely out my depth with PSUs. Anyways, I've done a couple of the PSU wattage calculators and they are telling me a 450W PSU will be enough, surely this is far too low? Is anyone able to advise at all please? I thought an 850W would be needed but maybe I'm completely wrong?

I've not got my full spec nailed down yet but so far I've got:

i7 6700K
MSI GTX 1080 Seahawk X
Asus Maximus VIII hero
I'll probably add on liquid cooling for the CPU as well plus the usual other HDD's & SSD's & pretty LEDs etc as well

Cheers,
Specs

EDIT: a year and a half for a first post? Surely that's a record!

 

[Specs]

Thanks for the quick reply, and your help! I was definitely thinking that a Corsair, EVGA or Seasonic unit would be a safe bet but I suppose I've saved a few quid not going ahead and getting an 850W.

I forgot how much of a pain speccing a PC can be!

 

[Specs]

I ended up going for the EVGA G2 650W so I've got plenty spare for future upgrades and for when I invitably make the leap to a VR setup!

Just need to wait for the mobo to arrive so I can get everything put together!

Cheers, Specs