You're spending alot on RAM and the motherboard, two things that dont affect your performance that much. If you're buying fast RAM thinking the Athlon is an APU, it isn't. The Athlon is basically a 5800k Trinity APU without the GPU section activated, so it doesn't benefit all that much from quicker RAM.
[PCPartPicker part list](http://pcpartpicker.com/p/MQ8WBm) / [Price breakdown by merchant](http://pcpartpicker.com/p/MQ8WBm/by_merchant/)
Type|Item|Price
:----|:----|:----
**CPU** | [AMD Athlon X4 750K 3.4GHz Quad-Core Processor](http://pcpartpicker.com/part/amd-cpu-ad750kwohjbox) | $79.49 @ OutletPC
**Motherboard** | [Gigabyte GA-F2A88XM-D3H Micro ATX FM2+ Motherboard](http://pcpartpicker.com/part/gigabyte-motherboard-gaf2a88xmd3h) | $64.99 @ Amazon
**Memory** | [Kingston Blu Red Series 8GB (2 x 4GB) DDR3-1600 Memory](http://pcpartpicker.com/part/kingston-memory-khx16c9b1rk28) | $71.88 @ NCIX US
**Storage** | [Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive](http://pcpartpicker.com/part/seagate-internal-hard-drive-st1000dm003) | $52.92 @ Amazon
**Video Card** | [Sapphire Radeon R7 260X 2GB Video Card](http://pcpartpicker.com/part/sapphire-video-card-1003662l) | $119.98 @ OutletPC
**Power Supply** | [Corsair Builder 430W 80+ Bronze Certified ATX Power Supply](http://pcpartpicker.com/part/corsair-power-supply-cx430) | $39.99 @ Newegg
| | **Total**
| Prices include shipping, taxes, and discounts when available | $429.25