  We study the efficiency of an improved Multiboson algorithm with two flavours
of Wilson fermions in a realistic physical situation ($\beta = 5.60$, $\kappa =
0.156$ on a $16^3 \times 24$ lattice). The performance of this exact algorithm
is compared with that of a state-of-the-art HMC algorithm: a considerable
improvement is obtained for the plaquette auto-correlation time, while the two
algorithms appear similarly efficient at decorrelating the topological charge.
