Nvidia’s 50-series cards drop support for PhysX, impacting older games
Most PC games that you can play on a modern PC would run faster on an Nvidia RTX 5080 or 5090 than, say, a GTX 1070. But some games, from a particular phase of enthusiasm for particles, destructible environments, and smooth-moving hair, will take a notable hit if their owners upgrade to the latest Nvidia cards.
That's because PhysX, once a dedicated physics simulation tool and card that became a selling point for Nvidia's gear, has been largely deprecated on Nvidia 50-series cards. The transition was announced in January, but it seems to have taken some time for someone to notice the impact on 32-bit, PhysX-enabled games (as seen by PCGamesN). The most recent of these affected games, Assassin's Creed IV: Black Flag,came out in 2013.
What follows is a brief primer on PhysX: what it was, what it did, and why it's left out of Nvidia's road map.