Thank u for your input!
Finally i bought a used ThinkPad E14 G3.
For a rendering test i did open a new project, insert the cristmas tree and rendered a photo 2880x2160, 4:3, default lens, 4 level, Yafa Ray
X230 CPU: I5 3320M 19:50 min
T580 CPU: I5 7200U 18:26 min
E14 G3 CPU: Ryzen 5500U 4:48 min
I choose the christmas tree because there was a cpu comparison in 2016 with it here in the sh3d forum.
For better classify i download and render the file with the same setup they used here from page 2:
https://sweethome3d.com/support/forum/viewthread_thread,6976_offset,10#30602
the fastest result there was: core i7 @ 4GHz 4 cores, 8 threads
time 2:40 min
my results (3x multible tested):
X230 CPU: I5 3320M 6:42 min
T580 CPU: I5 7200U 6:25 min
E14 G3 CPU: Ryzen 5500U 1:52 min
Im happy with the benefit of the AMD CPU. Also moving around in a bigger project (my house is 420 MB now) is much more fluid.
Additional the E14 G3 is very quiet, has a bright display and good speakers.
