see graph500

we use igraph cpu / cugraph gpu in pygraphistry/gfql projects, and our experience is cugraph is ~10X+ on tiny cheap GPUs over igraph. looking at that table, where all seem same magnitude as igraph, I'd therefore expect much better than all the options listed. And when things get bigger and it merits a bigger GPU, even better. The team has been doing a great job over the last decade, and all free.