Original:
CPU: Intel i5 4430 – $205
Mobo: Gigabyte B85M-HD3 – $85
RAM: 8GB Single Patriot-S 1600 – $76
SSD/HDD: Seagate Barracuda 2TB OR Sandisk Ultra Plus 128GB – $99
PSU: Antec Neo Eco 520W – $79
Case: Coolermaster RC372 – $45
GPU: Gigabyte HD 7870 – $225
 
Total: $808 (bit higher since diff gpu)
 
NEW 1
 
CPU: Intel Core i5 4440 $209.00
Motherboard: Gigabyte GA-B85M-D3H Motherboard $99.00
SSD: Samsung 840 EVO Series 120GB SSD $109.00
RAM: Corsair CMX8GX3M2A1600C9 8GB (2x4GB) DDR3 $109.00
GPU: ASUS Radeon HD7790 DirectCU II Overclocked 1GB $149.00
HDD: Seagate Barracuda 1TB ST1000DM003 $69.00
ODD: Samsung SH-224DB 24x DVDRW OEM $19.00
Case: Antec One Gaming Case $69.00
PSU: Antec High Current Gamer 520W Modular HCG-520M $99.00
 
TOTAL: $931.00
 
New 2
 
CPU: i5 4440 $212
Mobo: MSI B85-G43 $84
RAM: G.Skill Ares 2x4GB 1600Mhz $98
GPU: Gigabyte R9 270 $224
HDD: Seagate Barracuda 2TB $98
Case+PSU: Thermaltake V4 $79
 
Total: $795