Sooo, I want to build a new system and I need some advice.
Main use will be audio production (VSTis + editing),also want to get a bit into video and visuals and want to game on the system, but perhaps on a separate OS-install, but it doesn't have to be great for gaming.
Audio-Software: Cubase 6.5, SO 2, NI Maschine 2, Renoise, seldom Pro Tools 10, perhaps in the future Bitwig
Video-Software: Magic, (currently ) Lightworks 12
OS: Win7/10 and Antergos/Arch Linux.
My Budget is around 900-1000€
I already got:
RME Babyface + Presonus Audiobox 1818VSL
Fractal Define R4
Noctua NH-D14
3 Noctua NF A-14 PWM
Corsair RM 850
128 GB SSD + harddrives
(old GPU: GTX 260, :-( would use it a bit longer if necessary )
I kinda want to go for 2011-3 (i7-5820K), but I'm not sure if my budget isn't too low for that and if it's worth it.
with the parts you have this would be a good entry in the X99 platform £898.32
http://uk.pcpartpicker.com/p/G4mfVn
you have to make sure the ram is on their QVL ... I checked this ram out and it's good ... but you may want a different speed or amount ... here is the Asus X99 QVL
If you are planning on using PCIe audio interfaces ... I would recommend stepping up to the 5830K CPU as it has much higher PCIe bandwidth (from 28 lanes to 40 lanes)
You already got a quit case (which is needed for a home studio), a nice cpu heatsink, and a nice psu. I say keep the gpu as is cause you won't need a more powerful one. if you want you can go with what Ratzzz suggested.
a 21:9 monitor got to be nice for laying all these tranks and tools. check out the crossover 290M 29".