KDE Plasma 6.6 Delivers An Impressive Edge For Radeon Graphics Over GNOME 50 On Ubuntu 26.04

Written by Michael Larabel in Software on 25 March 2026 at 11:05 AM EDT. Page 3 of 4. 56 Comments.

Sadly the ongoing AMD Radeon stability issues in recent Linux kernel versions prevented some games from reliably running.

👁 Unigine Superposition benchmark with settings of Resolution: 3840 x 2160, Mode: Fullscreen, Quality: Low, Renderer: OpenGL. GNOME 50 was the fastest.

👁 Unigine Superposition benchmark with settings of Resolution: 6144 x 2560, Mode: Fullscreen, Quality: Low, Renderer: OpenGL. GNOME 50 was the fastest.

👁 Unigine Superposition benchmark with settings of Resolution: 3840 x 2160, Mode: Fullscreen, Quality: Medium, Renderer: OpenGL. Plasma 6.6 X11 was the fastest.

👁 Unigine Superposition benchmark with settings of Resolution: 6144 x 2560, Mode: Fullscreen, Quality: Medium, Renderer: OpenGL. GNOME 50 was the fastest.

With the OpenGL-rendered Unigine benchmarks, the performance was typically quite close between the GNOME 50 and Plasma 6.6 desktops except for at 6K where GNOME 50 pulled ahead of Plasma 6.6 -- similar to what we saw out of Batman: Arkham Knight.

👁 DDraceNetwork benchmark with settings of Resolution: 6144 x 2560, Mode: Fullscreen, Renderer: Vulkan, Zoom: Default, Demo: RaiNyMore2. Plasma 6.6 Wayland was the fastest.

👁 DDraceNetwork benchmark with settings of Resolution: 6144 x 2560, Mode: Fullscreen, Renderer: Vulkan, Zoom: Default, Demo: RaiNyMore2, Total Frame Time. GNOME 50 was the fastest.

👁 DDraceNetwork benchmark with settings of Resolution: 6144 x 2560, Mode: Fullscreen, Renderer: Vulkan, Zoom: Default, Demo: Multeasymap. Plasma 6.6 Wayland was the fastest.

👁 DDraceNetwork benchmark with settings of Resolution: 6144 x 2560, Mode: Fullscreen, Renderer: Vulkan, Zoom: Default, Demo: Multeasymap, Total Frame Time. Plasma 6.6 Wayland was the fastest.

For the DDraceNetwork platformer game, Plasma 6.6 allowed for much better performance than GNOME 50. But the game already runs at hundreds of FPS with ease on modern hardware.

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URL: https://www.phoronix.com/review/ubuntu-2604-gnome-kde/3

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KDE Plasma 6.6 Delivers An Impressive Edge For Radeon Graphics Over GNOME 50 On Ubuntu 26.04