The QSP-x86 is a made up system that does not exist in real hardware. QSP stands for Quick-Start Platform. The purpose of QSP-x86 is to have an easy system for application development, architectural studies, demos, etc.
The QSP-x86 system comes with device models and BSP for a select few common operating systems. Further, the system allows almost any generic PC operating system to be installed.
The QSP-x86 package contains a legacy processor core which is used by default in the included simulated machines. To use more modern processors, the package QSP-CPU can be installed, which contains recent processor cores.