New PC for gaming&stuff

[Deleted]

Hey,
my Laptop (MSI GT725) is struggling "a bit" with newer Games and even WoW seems to be a bit too much
I hope you can help me out with picking some decent components, not really sure whats good and whats.. meh

Budget: ~1000-1200€
Resolution: 1080p, 27"
Games: mostly WoW, Dota2, PoE (on a new PC )
Country: Germany
Parts that can be reused: HDD (2TB)
OS: will be using Win 7
Store: alternate.de or amazon

I'm sometimes studying right next to my pc/laptop, so low idle noise is something that really matters.

Thanks in advance

[Biernot]

PCPartPicker part list

CPU: Intel Core i5-4570 3.2GHz Quad-Core Processor (€174.85 @ Amazon Deutschland)
CPU Cooler: Thermaltake Frio 101.6 CFM CPU Cooler (€54.58 @ Amazon Deutschland)
Motherboard: Asus Z87-A ATX LGA1150 Motherboard (€131.66 @ Amazon Deutschland)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory (€80.09 @ Amazon Deutschland)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Disk (€149.99 @ Amazon Deutschland)
Video Card: XFX Radeon HD 7970 3GB Video Card (€271.77 @ Amazon Deutschland)
Case: Fractal Design Define R4 (Black Pearl) ATX Mid Tower Case (€94.79 @ Amazon Deutschland)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (€58.45 @ Amazon Deutschland)
Optical Drive: LG GH24NS95 DVD/CD Writer (€15.70 @ Amazon Deutschland)
Total: €1031.88

CPU: Placeholder, get i5-4670k instead (~200€, not listed in german pcpartpicker)
Heatsink: Placeholder. Depending on your overclocking intentions. If you do not plan to oc much (e.g. 4.0 - 4.2 GHz max), then get something like Coolermaster Hyper 212 EVO or Xigmatek Gaia (~30€). If you want a bit more, get a high-end air cooler (Noctua NH-D14, BeQuiet Dark Rock Pro 2) or closed loop water cooler (Corsair H80i/H100i, NZXT Kraken X40/X60)
GPU: Placeholder, look for the Radeon R9 280X. Should be available for roughly the same price (and is a little bit faster). Preferred brands: MSI, Asus, Gigabyte. E.g. http://www.amazon.de/GIGABYTE-3072MB...dp/B00FSC5BNG/
Case: If you do not care for a very quiet computer, then get the Fractal Arc Midi R2 instead (similar price/layout but better for larger water coolers).