I am going to build a PC in the end of this year. I will it use for gaming as well as for video editing (Adobe stuff) and for game engines (UE, Unity), but it shouldn't be over 1300€.
Here the reasons of my choose:
CPU: Best Price to Performance and I don't need to oc
Motherboard: Maybe I will add an additional GPU for SLI
GPU: I will choose a 870 if the price and VRAM will be similar
RAM: I don't know how much a higher clock will improve the performance
1300€ it's a very good budget for a gaming/editing rig.
If you don't care about OC, you can get a new devil's canion i5 or i7. The i5 4690 is a no brainer, especially if your real power for editing will come from the cuda cores of the gpu. ;) But of course you can get an i7 4790 and just know you've got the best money can buy...
The mobo is a bit of a 'problem'. If you do not want to OC, than you can get an H97, give up on SLI and high freq ram, but you won't REALLY need any of those things for gaming or video editing... You'll spend a little less as a whole. If you want SLI and High freq ram, then you'll need a Z97 chipset, at which point you should OC your cpu and be done with it...