In short, my build will be posted below. I just recently upgraded my GPU and my Power Supply to those listed below. I can barely run GTA in 25fps and Arma 3 in 20fps.. I feel like something is bottlenecking my GPU But i can't figure out what the issue is... I am seeing an improvement from my old graphics card but no where near what I keep seeing the AMD R9 390 is capable of... I need some serious help. Thank you in advance!
CPU
-AMD FX-6300 3.5GHz 6-Core Processor
Motherboard
-ASRock 970 EXTREME4 ATX AM3+ Motherboard
Memory
-G.Skill Sniper Series 8GB (1 x 8GB) DDR3-1600 Memory
-Crucial Ballistix 8GB (2 x 4GB) DDR3-1600 Memory
Hard Drive & SSD
-Seagate Barracuda 7200.10 160GB 3.5" 7200RPM Internal Hard Drive
-Hitachi Deskstar 1TB 3.5" 7200RPM Internal Hard Drive
GPU
-MSI Radeon R9 390 8GB Video Card
Power Supply
-Corsair CXM 750W 80+ Bronze Certified Semi-Modular ATX Power Supply
Operating System
Microsoft Windows 10 Pro OEM 64-bit
CPU
-AMD FX-6300 3.5GHz 6-Core Processor
Motherboard
-ASRock 970 EXTREME4 ATX AM3+ Motherboard
Memory
-G.Skill Sniper Series 8GB (1 x 8GB) DDR3-1600 Memory
-Crucial Ballistix 8GB (2 x 4GB) DDR3-1600 Memory
Hard Drive & SSD
-Seagate Barracuda 7200.10 160GB 3.5" 7200RPM Internal Hard Drive
-Hitachi Deskstar 1TB 3.5" 7200RPM Internal Hard Drive
GPU
-MSI Radeon R9 390 8GB Video Card
Power Supply
-Corsair CXM 750W 80+ Bronze Certified Semi-Modular ATX Power Supply
Operating System
Microsoft Windows 10 Pro OEM 64-bit