Thief renders at native 1080p on PlayStation 4 and 900p on Xbox One, Eidos Montreal has confirmed. Both versions run at 30 frames per second.
Game director Nicolas Cantin revealed the final resolutions to Eurogamer, but claimed that players will "really need good eyes to see the difference". He's also alleged to have insisted that the Xbox One version "is as good as the PS4 version".
The difference is identical to that of Assassin's Creed 4: Black Flag, which also renders at 900p on Xbox One and - following a post-release patch - 1080p on PS4.
Performance differences between multiplatform titles are becoming a regular occurrence for Microsoft, who has already seen numerous titles perform worse on its console.
Earlier this week it was confirmed that Metal Gear Solid 5: Ground Zeroes runs at 720p on Xbox One and 1080p on PlayStation 4. Call of Duty: Ghosts, Battlefield 4, Assassin's Creed 4 and Tomb Raider: Definitive Edition all perform worse on Xbox One, too.
There have also been whispers this week that Watch Dogs may render at a lower resolution on Xbox One than PS4.
Microsoft, though, seems to think that the debate over "minor" visual differences has gotten "way overblown".
Thief launches on Xbox One, PlayStation 4, PlayStation 3, Xbox 360 and PC next Friday, February 28.