I am planning to improve my current PC. I am already going to buy a new RAM stick, to get 8GB of RAM, and I am going to add a SSD (probably a 120gb drive). Beyond those, I have about £300 to make some more improvements. My current PC specs:
http://uk.pcpartpicker.com/p/yh7899
CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor
Motherboard: MSI Z87-G41 PC Mate ATX LGA1150 Motherboard
Memory: Kingston Blu 4GB (1 x 4GB) DDR3-1600 Memory
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: Sapphire Radeon HD 7870 GHz Edition 2GB Video Card
Case: NZXT H230 (White) ATX Mid Tower Case
Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply
I would like to swap the 7870 for a R9 390. My goal is to able to play pretty much any 2014 game on Ultra (I am mainly interested in Starcraft 2, Dota 2, and Dark Souls 2) or at the very least on Very High at 1080p. My only issue is my PSU: would the CX600 be enough to power this rig if I used a R9 390?