yep, hence why I said "some" capacity for VR, it comes in just above the entry level requirements which at least allows you to try it out and if need be you can throw a second card in(though VR really doesn't interest me enough to bother). What I actually expect is this card is a great mid range card that is a good compromise on performance vs price and provides a good future. AMD seem to have made the right choices for a change.

GPU's are allowed to draw up-to 75 watts of power from the PCI-E slot on the motherboard.

The rest comes from the PCI-E 6/8-pin power cables from the power supply unit, 6 pin PCI-E power cables will provide an extra 75w of power, whilst the 8-pin (Which are actually 6+2 these days) power cables can do up-to 150 watts.

Polaris thus draws upwards of 75 watts of energy from the PCI-E slot on the motherboard and another 75 watts from a 6 pin PCI-E cable... It's a power wall that could potentially limit overclocking.
There are some PSU's that also benefit from a GPU having two 6-pin PCI-E cable support rather than a single 8-pin due to load balancing of multiple 12v rails.

Your motherboard should be all good either way.

AMD has finally explained the new naming scheme of their cards, and it includes a little surprise

AMD Radeon RX 400 series naming scheme explained

http://videocardz.com/61721/amd-radeon-rx-400-series-naming-scheme-explained

Let’s start with the RX. There are two subseries in Radeon 400 stack, the RX 400 and 400. The RX parts will offer >1.5 TFLOps performance and at least 100 GB/s of memory bandwidth. Those cards that do not offer such performance will not use the RX prefix.

AMD confirmed they will be using XX5 revisions, which basically means we might be seeing faster variants released after time, when yields are better, leakage was minimized, or AMD simply decided to release higher-clocked version. A good example would be Radeon HD 7970 and 7970 GHz Edition (being 2nd revision). Hopefully this will also mean less rebrands.

Oh, and Sapphire will replace the 6-pin power connector by an 8-pin one in their Nitro series. Asus will have two power connectors on their Strix card, but they haven't revealed which ones.

Thanks for explaining :).

Apparently the 480's are drawing more power than they're supposed to, violating the terms of PCI-E and the 6 pin power supply.

https://www.reddit.com/r/Amd/comments/4qfwd4/rx480_fails_pcie_specification/

Yeah, AMD drivers do get quite a bit better over time, but not really my point - what I'm saying is that in current games RX 480 trades blows with 970, card from previous generation on old manufacturing process with the similar TDP...while nVidia's 1070, GPU with similar TDP and similar process as RX 480 is slaughtering it.

Basically what I'm saying is that AMD's tech is nowhere near as good as nVidia's and that they are dropping behind even more. My last nVidia card was GeForce 4 Ti4400, been with ATI/AMD ever since, but I think it's time for me to go back to team green.

I wonder where that myth comes from...

gpu's are allowed to draw as much power from a pci-e slot AS THE MOTHERBOARD ALLOWS. Typically on boot-up, this value has its default set to 75W.

Unbeknownst to mankind, there is a "Slot Capabilities Register" which you can configure up to over 300 watt per slot, if the motherboard setup allows it.

The "Myth" comes from the fact that it is actually a part of the PCI-E Standard.
Can a GPU draw more than that? Sure it can.
But there is zero guarentees of compatability if the Motherboards power delivery is less than ideal... I have had first hand experience with this too.

And I quote: "They can use up to 75 W (3.3 V × 3 A + 12 V × 5.5 A), though the specification demands that the higher-power configuration be used for graphics cards only, while cards of other purposes are to remain at 25 W."
https://en.wikipedia.org/wiki/PCI_Express#Power

They will probably be the cards to get in that lineup.

We will have wait and see what will happen on that front.

You aren't the only one!
My last nVidia card was a Geforce 7, before that the Geforce FX. I don't think I have ever been enticed to go back to nVidia this strongly before, they are just "better" in almost every aspect except price, going to wait it out for Vega. I need high-end cards.

Well what ever happened to sticking with AMD ?  

I think AMD needs to pull all the stops to put GP102 dead in it's tracks like pushing out a bigger die size and keep depending on console wins to effect engine level optimizations along with the API level ... 

If AMD can't decisively beat Nvidia in those especially favourable conditions, it's pretty much game over for them ...

ive been following this card since its announcement. I think its great for its price range however as an owner of a 970 it'd didn't offer much in terms of a raw power boost. In light of that I decided to get a 1070 instead. Shame too because I wanted to switch to freesync further down the line.

Oe rgw PowerColor RX 480 Devil, that also has an 8-pin power connector, and a DVI port.

http://videocardz.com/61769/exclusive-powercolor-radeon-rx-480-devil-pictured