400 dollar gaming PC need opinions

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor ($69.99 @ Amazon)
Motherboard: MSI Z97 PC MATE ATX LGA1150 Motherboard ($69.99 @ Newegg)
Memory: A-Data XPG V1.0 4GB (1 x 4GB) DDR3-1600 Memory ($34.99 @ Newegg)
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive ($52.10 @ Amazon)
Video Card: PowerColor Radeon R9 270 2GB TurboDuo Video Card ($139.20 @ Newegg)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: Corsair Builder 500W 80+ Bronze Certified ATX Power Supply ($29.99 @ Newegg)
Total: $426.25
Prices include shipping, taxes, and discounts when available
 
Solution

deadlockedworld

Distinguished
I think you should shop for some used parts. At this price range you would do better inheriting some older, higher performance parts from someone that doesn't need them anymore.

Edit: But if not that build above me is miles ahead of where you were -- name brand parts.
 
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor ($69.99 @ Amazon)
Motherboard: MSI Z97 PC MATE ATX LGA1150 Motherboard ($69.99 @ Newegg)
Memory: A-Data XPG V1.0 4GB (1 x 4GB) DDR3-1600 Memory ($34.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($52.91 @ OutletPC)
Video Card: PowerColor Radeon R9 270 2GB TurboDuo Video Card ($139.20 @ Newegg)
Case: Enermax ECA3253-BW ATX Mid Tower Case ($29.99 @ Newegg)
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($19.99 @ Newegg)
Total: $417.06
Prices include shipping, taxes, and discounts when available

Pretty much the same thing, but with 1TB of HDD, different case and PSU