At this point I would say 4C/8T is where you want to start like the i7 7700K. Games like BF1, Watch Dogs 2, Ghost Recon Wildlands will all take as many threads as you can throw at them. Until now 2C/4T was considered entry level for gaming, 4C/4T was mainstream, 4C/8T was high end mainstream, 6C/12T to 10C/20T was considered high end. With Ryzen's launch by the end of the year this will change considerably. 4C/4T will be the new entry level, 4C/8T mainstream, 6C/12T high end mainstream (you may argue it will just be main stream depending on manufacturer) and 8C/16T to 10C/20T for high end. Point being get as many threads as you can afford. The game is changing, pun most certainly intended.