Here is a nice collection of Embergen Presets ready to use and learn from, created by Kat!
50 Ground burst style explosions in themes ranging from IEDs, Carbombs, Javelin Strikes and more. A few of these have been used in Feature Films for the Asylum, including Transmorphers: Mechabeasts.
All these presets were created on a GTX-1080Ti and as a result should load and go without too much trouble on any class of graphics card equal to that or above. In some cases, the volume area (Simulation Block as labeled in each) may need to be increased in size in order to accommodate the full effect.