Comparison between two conceptual models displaying respectively a high sedimentary budget rifted margin (e.g. the Pyrenean belt) and a low sedimentary budget rifted margin (e.g. the Alps). Associated logs display recorded T_max at equivalent heat flow and lithospheric thinning. Observed T_max influence the rheology of the basement which becomes ductile beyond of 350 °C for a typical felsic continental crust. In the case of high sedimentary budget, the recorded T_max at the top basement exceeds 400 °C, while for the case of low sedimentary budget, the recorded T_max are close to 100 °C.