Mass distribution of WDs in CVs for the different models described in this work and the distribution derived from observations. From top to bottom: observed sample used in Zorotovic et al. (2011) with the black histogram representing a sub-sample for which the mass determination is presumably more reliable, distribution predicted by our reference model, distribution derived from the reference model including a strong wind during TTMT, distribution predicted if it is assumed that 20% of the transferred mass during a nova cycle remains on the WD. The fractions are normalized to the total formation probability of all CVs in each model.