Thx a LOT, this is the best info on the subject I was able to find. Just one more thing to ask: as I've understood from https://enbseries.enbdev.com/forum/viewtopic.php?f=2&t=2290&start=30 , for cards with large amounts of VRAM (such as Titan), using ReservedMemorySizeMb over 512M doesn't make much sense. If you (or somebody else) could elaborate a bit on recommended values of ReservedMemorySizeMb for large cards - it would be great.