The Current Intel Arc Graphics Linux Gaming Performance On Linux 6.2 + Mesa 23.1-dev
Valve's Left 4 Dead 2 game with OpenGL at least could compete with the NVIDIA and AMD graphics cards in its class. The OpenGL performance was very good here for the Arc Graphics.
Though when it came to the graphics card power draw, the Arc Graphics A750/A770 were consuming the most.
Left 4 Dead 2 with Vulkan meanwhile saw the Intel Arc Graphics performing much worse than with the OpenGL driver stack and far below that of the NVIDIA and AMD comparison cards.
Valve's Portal 2 game was a simiular story where at least the performance of the A750/A770 was competitive to the NVIDIA hardware when making use of OpenGL but wasn't the case for Vulkan.