Final SMBH mass versus final stellar mass for all the explored models. The solid line is the Marconi & Hunt (2003) best-fit of the Magorrian (1998) relation, and the two dashed lines represent the associated 1-σ deviation. Different colors indicate different initial masses of the M_BH, i.e. 10³   M_⊙ (green), 10⁵   M_⊙ (red, models in Table 3), 10⁶   M_⊙ (blue), and 10⁸   M_⊙ (black, models in Table 2). Different symbols identify the adopted value for radiative efficiency: ϵ = 0.1 (circles), ϵ = 0.01 (triangles), and ϵ = 0.001 (squares). The black crosses are the hydrodynamical models in Table 1 of Ciotti et al. (2010).