Intel Arc Graphics A770: Windows 11 vs. Linux Benchmarks
The Unigine OpenGL benchmarks with the Arc Graphics A770 on Linux were nearly ~80% the performance seen under Windows. Meanwhile with the likes of the Radeon graphics driver is where its Unigine performance can be even faster on Linux -- showing the potential of this particular engine and when the GPU driver is fully optimized. So hopefully in 2023 we'll see more progress on the Iris Gallium3D front as there still is room to mature.
The Xonotic open-source first person shooter game was the only game tested where there was better performance on Linux than Windows.
X-Plane 12 was another game attempted that is native to both Windows and Linux but unfortunately does not currently work with Intel's open-source Vulkan driver.
Across the limited selection of games tested based on those that were (automated) benchmark friendly and ran successfully with the Linux graphics driver stack too, the Arc Graphics A770 was roughly at 82% the speed under Linux as it was on Windows 11.
For those more interested in GPU compute than gaming for Intel Arc Graphics, when running some quick OpenCL benchmarks under both Windows 11 and Ubuntu Linux there was nearly identical performance. But that's really not too surprising there considering that the Intel Compute Runtime + IGC stack are used on both Windows and Linux for the same OpenCL and oneAPI Level Zero implementation.
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