CPU : Intel Core i5-4570 3.2GHz Quad-Core Processor
Motherboard: ASRock H87 Performance ATX LGA1150 Motherboard
Memory: G.Skill Ripjaws X Series 8GB (2 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: Cooler Master HAF 912 ATX Mid Tower Case
Power Supply: SeaSonic S12II 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply
Fractal Design Core 3000 USB 3.0 (Black) $59.99
XFX 650W $74.99
the CPU is slightly weak but still good for gaming, and the GPU is about 2 tier above your HD 7870 so it should give much better gaming results.
slightly weak? because i also dont want a weak CPU and Asus Radeon HD 7970 cost $500 in my country D: with $300 i can get a 7950. Why Fractal Design Core 3000? is it better than Cooler Master HAF 912 ATX Mid Tower Case?
where are you from?you should've listed your country on your OP. also find other HD 7970's that are around 300$ zone. if there aren't any then go with 7950, with a good cooler, so that if you need more performance you just have to OC the card for a nice boost.