KevinNYC :
Okay, thank you. I am planning to game in 1440p, is the rx580 enough to get 60+ fps on very high/ultra settings? Also, no I'm not planning to paint the fans, only the backplate and maybe the plasic parts around the fans. And is the rx580 future-proof? Or will it be 'bad' for 1440p gaming over about 1-1,5 years?
Well 1440p is very hard on a GPU if you want to game consistently at 60FPS. It's the main reason I bought a second 970 for SLI after upgrading from 1080p (970 SLI is roughly 10% faster than a single 980Ti depending on game SLI scaling). Took a big hit in FPS like Witcher III, Far Cry 3, and Crysis 3 when moving up to 1440p with a single GPU.
In some games like BF1 is averaged over 70FP, but in other games like Witcher 3 and Dues Ex it averages below 50. Here's a good review of a Strix 580 done by Guru3D just two weeks ago with a lot of games. You can click through the game benchmarks in the drop down menu at the bottom:
http://www.guru3d.com/articles-pages/asus-radeon-rx-580-strix-review,1.html
Regarding how it will be in the future, nobody really knows. It depends on the game developer and how well they code the game. Dues Ex (DX12) and the two and a half year old Witcher III (DX11) are today's Crysis GPU killers. It's really hard to say. But I will say this: generally AMD's upper tier GPUs have a longer shelf life, if you will, than Nvidia's. And as an Nvidia only buyer, I do not say that lightly.