In that case I would drop to a H110 board an an i5-6400. Though I'd also get the SSD first and install a HDD later, the next month. Could look like this:
| Type | Item | Price |
|---|---|---|
| CPU | Intel Core i5-6400 | EUR 169,00 @ Mindfactory |
| Motherboard | MSI H110M PRO-VD | EUR 57,80 @ Amazon.de |
| Memory | Crucial CT8G4DFD8213 (8 GB) | EUR 25,75 @ Amazon.de |
| SSD | SanDisk SSD PLUS (128 GB) | EUR 41,89 @ Amazon.de |
| Video Card | GeForce GTX 970 | EUR 268,00 @ Mindfactory |
| Power Supply | Super Flower Golden Green HX (450 W) | EUR 69,21 @ Amazon.de |
| Total | €639.64 | |
| Generated by pc-kombo 04.06.2016 |
A good display would be https://www.amazon.de/LG-24MP47HQ-P-AEU-Monitor-D-Sub-Reaktionszeit/dp/B00Y81219K. Still a bit over budget.