This is what you should get for $800 without an OS.
If you have no knowledge, there is no point getting an 4690K
This will play any game at 60+FPS or close to it on highest settings.
Also a 256GB SSD
PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| CPU | Intel Core i5-4590 3.3GHz Quad-Core Processor | $159.99 @ Micro Center |
| Motherboard | Biostar Hi-Fi B85S3+ Ver. 6.x Micro ATX LGA1150 Motherboard | $58.00 @ Newegg |
| Memory | GeIL EVO POTENZA 8GB (2 x 4GB) DDR3-1600 Memory | $53.98 @ Newegg |
| Storage | Crucial MX100 256GB 2.5" Solid State Drive | $104.98 @ OutletPC |
| Storage | Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive | $47.97 @ SuperBiiz |
| Video Card | HIS Radeon R9 290 4GB IceQ X² Video Card | $262.98 @ Newegg |
| Case | Enermax Thorex ATX Mid Tower Case | $38.99 @ SuperBiiz |
| Power Supply | Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply | $69.99 @ Micro Center |
| Case Fan | Cooler Master SickleFlow 69.7 CFM 120mm Fan | $5.89 @ OutletPC |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total | $802.77 | |
| Generated by PCPartPicker 2015-03-06 11:31 EST-0500 |