I have run some benchmarks with different driver versions and gfx cards and put the results in a table (thanks to gnumeric) and exported as html :
https://sd-1.archive-host.com/membres/ ... 124662650/GfxBench2d.htmlfunny that the transfer from VRAM to RAM is much better with an older version of the RadeonHD (v1.21)
R9-270 is much better than RX550 but the consumption is 150W vs 50W...
I would guess that the RX580 is currently the best card for the X-5000 (but the consumption is 185W) !
I also run the starbox 3D demo and here RX550 is better :
StarBox Benchmark 1.0
RadeonHD R9-270
Resolution: 1920 * 1080
Fullscreen
FPS: 307.70
Radeon RX 550
Resolution: 1920 * 1080
Fullscreen
FPS: 388.99
Power=High
Resolution: 1920 * 1080
Fullscreen
FPS: 392.03
another fun fact is that under Win10, furmark 3D benchmark gave 2696 points (45fps) for R9-270 vs 1022 points (17fps) for RX550