We determine the quark masses and the chiral condensate in the <(MS)over ba
r> scheme at NNLO from Lattice QCD in the quenched approximation at beta =
6.0, beta = 6.2 and beta = 6.4 using both the Wilson and the tree-level imp
roved SW-Clover fermion action. We extract these quantities using the Vecto
r and the Axial Ward Identities and nonperturbative value of the renormaliz
ation constants. We compare the results obtained vr th the two methods and
we study the O(a) dependence of the quark masses for both actions.