Ahead of the 14 May early-access launch, the developer said a GTX 1660 and i5-8400 can deliver 30fps at 1080p Low.
At the high end, it said an RTX 5070 Ti with an i9-14900K can reach 60fps at 4K High, while 12GB RAM is the minimum requirement.
Unknown Worlds said further optimisation will continue during an early-access period expected to last two to three years for the highly wishlisted Steam game.
Is Subnautica 2's 4K dream an impossible benchmark for most of today's high-end gaming PCs?
Can a studio win a legal war with its publisher and still successfully launch a hit game?
Will adding friends destroy the terrifying isolation that made the original Subnautica a classic?