Oh, damn, Well, there was a comparison between Radeon Vega 10 of the R7 2700U vs R7 Graphics of the A12 9800E. It averaged at more than TWICE the performance of the R7, some tests yielded similar performance, some yielded triple, Tessellation in particular, was 5X the performance (Old GCN struggled with that so it makes sense). If those values hold up, that APU has nearly half (40% at most probably) as much performance as my R9 390.
Edit: Okay, that might be a hyperbole to say it’s near half an R9 390. In fact, it apparently scored lower than GT 1030 although I suspect that’s due to an Engineering Sample with premature drivers (We know how AMD is with early drivers) so that’s not even close to half.