
As explained last month after release and when benchmarking the Radeon RX 5600 XT with the new vBIOS on Linux, updated firmware for the SMC was needed to jive with the updated vBIOS. Without that updated SMC firmware, the graphics card on Linux would be left running in a low-power performance state and lead to poor performance.
Fortunately, that updated navi10_smc binary has now passed AMD QA and is upstream within linux-firmware.git. In turn, Linux distributions should begin pulling this updated AMDGPU firmware shortly.
With this binary merged today, when dropping it in /lib/firmware/amdgpu and re-spinning the initramfs where relevant, the Radeon RX 5600 XT graphics cards with that updated performance BIOS will now be working out correctly.
On Linux we've found that updated vBIOS to deliver ~5% performance uplift overall but larger boosts for some games.
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