The X-Ray Universe as seen through a Super Computer

Upcoming astronomical surveys and instruments like Planck, SPT, PanStars, DES, Euclid, LOFAR, eROSITA and many more will need a theoretical counterpart in form of simulations which follow the formation of cosmological structures in so far unaccomplished detail, taking into account enough physical processes to allow a self consistent comparison to observations at multiple wavelength and throughout the entire epoch of structure formation. I will report on the results from a recent simulation campaign, where we followed the formation of cosmological structures in so far unaccomplished detail, performing a large set of cosmological, hydrodynamical simulations covering up to Gpc^3 volumes, taking into account enough physical processes (star-formation, chemical enrichment, AGN feedback) to allow a self consistent comparison, especially to observations at X-Ray wavelength. I will put special emphasis on the footprint of clusters and AGNs for future X-Ray missions like eROSITA and ATHENA