MRI resolution defined as Res_MRI ≡ λ_MRI/Δθ in logarithmic scale measured at t = 50 000, for 2D-Std (the standard 2D resolution grid), 2D-High (the high-resolution 2D grid) and 3D (3D grid) models with the same initial setup as β50-m0.1-a0.94. Almost the entire simulation domain has roughly 10 or more grid points per MRI’s fastest growing wavelength, indicating MRI turbulence should be well captured.