The Laboratory of Integrated Systems at Universidad Politecnica de Madrid is an officially recognized research group that started its activities in 1983 in the areas of integrated circuit design and development of EDA tools. It has also accumulated long-term experience using FPGAs mainly in the area of digital signal processing. In 2008, activities started to accelerate High-Performance Computing (HPC) applications in the field of Computation Fluid Dynamics (CFD). We selected Gidel PROCStar III boards as they provided the appropriate computing power, a specific FPGA to handle the PCI-express interface, and mainly the possibility of attaching multiple DDR memories to each FPGA, a critical aspect in many HPC applications that Gidel had cleverly anticipated. In addition, their Multiport technology accessible through the ProcWizard tool simplified the burden of dealing with the PCI-e and DDR interfaces. Since then, we have been working in close collaboration with Gidel, whose support has always been excellent. Today, acceleration of HPC applications remains an active field of research in the group and Gidel's PROCStar IV boards remain our platform of choice, as they allow us to achieve excellent performance and to target complex CFD problems even dealing with unstructured meshes.