program Serenity . A benchmark benchmark study by Klahr et al. of sDFT-optimized structures for the S22 and A24 test sets of intermolecular complexes (see Fig. ) found that popular combinations of NAXC/NAKE in FDE like LDA/Thomas-Fermi or PW91/PW91k describe the molecular structures reasonably well, but should be handled with extreme caution because of their inability to describe dispersion inter-actions. In contrast, for BP86/LLP91 with explicit D3(BJ) dispersion correction, the resulting structures showed very good agreement with the high-level reference data.