Sage_Masters

The GTX 1060 3gig would give you greater performance over the 1050 ti even though its 3gig, it will benefit you in the long run

You can put a lil more to get a GTX 1060 But for $1000 dollar you can get a pretty neat system 
Case good mid tower should be fine a full tower may look empty
Thermal take versa c22 if you like rgb 
Corsair Crystal Series 570X

Will do! 
 
Thanks a ton @Sage_Masters and @knightslugger!

Yes true PUBG is sort of not coded properly for older hardware kind of like dirty windows 10 and old nvidia drivers

I suggest you get the 1600 and a B series mobo would do fine for your brother whose just going to be gaming, as the differences of 1600 and 1600x is stated above

Alright thanks a lot for the help, and also thanks a lot to @tyrage, @Sage_Masters, @Eduard the weeb, @Being Delirious and @Xrellik. 
Dankeschön!

OKe , thank you

The cheapest vega 64 I can find here in germany is around 600€, while the 1080 I linked in the initial post is 520€. I also heard that the power consumption is a lot higher with the vega 64. Would you still recommend getting the vega?
The ryzen 5 1600 seems like the better choice for cpu then, since he'll mostly be gaming on the machine.
And do you have any recommendations for a good air cooler?

The GTX 1080 seems better in gaming than Vega 64 
you dont need to change from 1700 to 1600

R5 1600 and gtx 1050 ti 
The 1050 ti can handle 1080p gaming depends on the game 

Yes correct lol was going to say same thing

Look at entry level mid towers, cooler master, corsair, raidmax, bitfinix, thermaltake 

Go for the 1060 now it wont bottleneck with the 3470 and if you upgrade the cpu in the feature it can give you more head room

quality and durability AMD has been shit from many years now

if ryzen actually lasts more than 2 years without cpu problems, AMD known for bad quality and durability 

if ryzen actually lasts more than 2 years without cpu problems, AMD known for bad quality and durability 

Intel is really going mad here the normal tech wizz cant even keep up with Intels naming standards. 

HK 750 is a pretty good power supply also check on johnny guru for reviews in it

what system you running with the HX 750?

Looks about right

ya they will work together but  i would get the normal 1600 drop the cooler and get a 1080 

That looks good. 750w is a little overkill, but having a bigger headroom never hurts.
Check that the B350 MOBO supports 3000hz+ ram speeds as I know that some have issues with that. 
Otherwise, you're all good. 
Edit: As @Vernw3 says, you could get a 1600 as the only difference is stock clock (which can be overclocked) and stock cooler size. 

Okay Cheers

Hey guys,
Just want some community feedback on this. Most of these things are already in the queue to some degree. Just trying to prioritize...

Why?
Who are you?
Why are you starring at me?
 
Btw. You can have a look in my signature. There is a link to some pictures that show me painting two GTX 980s white.