Brillis Wuce :
Yes, XFX makes great power supplies. That'll last you a long time.
Okay awesome! Which of these two builds would you say is the best? They are about the same price, take note that both are used systems.
PC A
CASE: Fractal Design Define R4
CPU: Intel Core I7-4770k
CPU COOLER: Cooler Master Blizzard T2 CPU
GPU: EVGA GeForce GTX 780Ti 3GB PhysX CUDA
PSU: Corsair CX 750, 750W PSU
MOTHERBOARD: MSI Z87-GD65 GAMING, Socket-1150
RAM: Crucial DDR3 BallistiX 1600Mhz 16GB KIT
HARDDISK: Seagate Barracuda 1TB
OS: Windows 7
PC B
CASE: CoolerMaster CMstorm Trooper Big Tower
CPU: Intel Core i5-4670K
CPU COOLER: Cooler Master Seidon 240m Water cooler
GPU: MSI GeForce GTX 970
PSU: XFX ProSeries 850W
MOTHERBOARD: MSI Z97 Gaming 5
RAM: HyperX Fury 8GB
HARDDISK: Seagate Barracuda 1TB
SSD: 240 GB Kingston
OS: Windows 7