Take a look: http://uk.pcpartpicker.com/p/1kRCu
CPU: AMD FX-8350
CPU Cooler: Corsair H100 (CWCH100)
Motherboard: Gigabyte GA-990FXA-UD3
Memory: G.Skill Sniper Series 16GB (2 x 8GB) (F3-1866C9D-16GSR)
Storage: OCZ Vector Series 256GB (VTR1-25SAT3-256G)
Storage: Western Digital Caviar Black 2TB (WD2002FAEX)
Video Card: Gigabyte Radeon HD 7970 GHz Edition 3GB (GV-R797TO-3GD)
Case: Corsair Obsidian 650D (CC650DW-1)
Power Supply: Corsair AX760 (CP-9020045-EU)
Where are you going to order parts, though? I've used UK prices and product codes as a guideline (and went over a bit). Should be largely the same anywhere in EU. Availability - that's another question.
Anyway, has top components, a fair OC headroom. Crossfire is discouraged, although AX760 would manage - it's so stable even if overloaded that it could probably be legally sold as 900W.