"2K resolution is a generic term for display devices or content having horizontal resolution of approximately 2,000 pixels." (...) 1920 × 1080 is the most common 2K resolution"[0]. How are you distinguishing between 2K and 1080p?.. are you thinking of 1440p (2.5k wide), or of a non 16:9 aspect ratio?
Have you ever found a laptop like this? 1kg is sacrifice a lot of corners in the name of weight (battery, screen, glass, ram, cooling, drives, processing and GPU), while workstations are are the likely place to find 128GB ECC.. they focus on performance over weight (they're getting better at style). Sounds like you want a workstation laptop in a ultrabook's body (and who doesn't.. I think there's a guy at NASA that would like you to bring it in for study)