The Fastra II is a desktop supercomputer designed for tomography. It was built in late 2009 by the ASTRA (All Scale Tomographic Reconstruction Antwerp) group of researchers of the IBBT (Interdisciplinary institute for BroadBand Technology) VisionLab at the University of Antwerp and by Belgian computer shop Tones, in collaboration with Asus, a Taiwanese multinational computer product manufacturer, as the successor to the Fastra I (built in 2008).
The Fastra II was determined to be over three times faster than the Fastra I, which in turn was slightly faster than a 512-core cluster. However, because of the number of GPUs in the computer, the system initially suffered from several issues, including the system refusing to reboot and overheating due to a lack of space between the video cards.