Could you recomand me which one of these power supplies should i choose for my PC?: 600Watt ; 650Watt ; 700Watt ; 1000Watt? The PC it's an Intel I7 6700k 4,0 gHz 4-core, 16GB RAM 3000 mgHz, Asus Strix 8G GeForce GTX 1070 8GB 256bit, Motherboard: Asus Z170-K, HDD: 1000GB, SSD: 240GB. Hope you'll help me to choose the best one. Thanks!