Will defer to my AMD-friendly cohorts on this one ;)
Current Build: Winter Soldieri7-5820K Haswell-E 6-Core 3.30 GHz | ASRock X99 Extreme4 Socket LGA2011-3 | 64 GB G.Skill Ripjaws DDR4-2133 | nVIDIA GTX 1080 8 GB Founders Edition | NZXT H440 ATX Mid-Tower (White) | Corsair 850W 80+ Platinum Modular
Samsung 950 Pro 256 GB NVMe SSD | (x3) Samsung EVO 850 500 GB SSD
Asus PG279Q ROG Swift 27" IPS 1440p 165hz G-Sync | Asus MG279Q 27" IPS 1440p 144hz FreeSyncBuild In Progress: TEMPEST
I was told intel (i5 or i7) would be better than AMD CPU's.
And if you're going to get a Radeon, why not a 390 or 390X?
If you have to stay within that 500 - 600 Euro budget, then http://uk.pcpartpicker.com/p/RYjWYJ would be more powerful. The i3 Skylake line is much more powerful than the AMD FX line. More Cores does not equal more power. Also, taking out the Liquid Cooler that the i3 does not need (as it is non-OC'able), along with the useless case fans (Most cases come with 2-4 pre-installed), along with a cheaper, similar colored case (still Black and Blue) will allow you to jump up to an R9 380X and stay close within your budget.
Looks like a descent build list.
If you can save/wait/find a sale I'd go for more RAM with the highest PC rating you can find; your mobo supports up to PC3200.
My other recommendation to everyone is plug it into a UPS with voltage boost and trim (trim being the most important feature since it pulls down voltage spikes which can do damage). I know that this can be an expensive addition, but it protects your investment and you can continue using it over multiple builds, extending the life of your systems.
Now i have a upgrade path for this build
Next upgrade i5 4760K with a cooler for it, The motherboard is compatible with that cpu so that will only be the thing next to buy,
G3258 , i'll overclock it to the highest i can with stock cooler and within 3-5 months get the i5 4760K,
The R9 390 4 gig will hopefully max out all games at 1080p, i cant go higher bcz my monitor doesnt support it then,
One fan comes as an intake which is 200mm , just got one more static pressure 120mm as an outtake for the case.
Any other suggestion or something i did wrong
http://uk.pcpartpicker.com/p/YBCq6h You will get more power with the 380X than the 960 for a similar price.