i5 is just fine for gaming. 8GB memory is also fine for gaming. With these changes you can easily add an SSD and a g-sync 144hz monitor well within your budget!
PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| CPU | Intel Core i5-4690K 3.5GHz Quad-Core Processor | €253.32 @ Amazon Deutschland |
| Motherboard | MSI Z97-G45 Gaming ATX LGA1150 Motherboard | €144.10 @ Amazon Deutschland |
| Memory | Corsair Vengeance Pro 8GB (2 x 4GB) DDR3-1600 Memory | €74.89 @ Amazon Deutschland |
| Storage | Samsung 850 EVO-Series 250GB 2.5" Solid State Drive | - |
| Storage | Western Digital WD Green 2TB 3.5" 5400RPM Internal Hard Drive | €86.90 @ Caseking |
| Video Card | Gigabyte GeForce GTX 980 4GB WINDFORCE 3X Video Card | €609.95 @ Amazon Deutschland |
| Case | Fractal Design Define R5 (Black) ATX Mid Tower Case | €110.89 @ Amazon Deutschland |
| Power Supply | EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply | €120.59 @ Amazon Deutschland |
| Monitor | BenQ XL2420G 144Hz 24.0" Monitor | - |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total | €1400.64 | |
| Generated by PCPartPicker 2015-05-03 00:21 CEST+0200 |