It's been nearly four years since Larian Studios announced Baldur's Gate 3. That's an awfully long time in PC gaming terms, and it's come an awfully long way since then. So it shouldn't be entirely surprising that your rig is going to be a little beefier than developers originally thought in order to run the game comfortably.
"Baldur's Gate 3's graphical fidelity and complexity has improved quite a bit as it's grown throughout Early Access," Larian said at the tail-end of yesterday's launch date announcement.
"We've been keeping an eye on its minimum system requirements, and as the game nears release we've raised the minimum system requirements listed on Steam to better reflect the realities of the launch version.