  We give the alternative formulation of quasiparticle model of quark gluon
plasma with medium dependent dispersion relation. The model is
thermodynamically consistent provided the medium dependent contribution to the
energy density is taken in to account. We establish the connection of our model
with other variants of quasiparticle models which are thermodynamically
consistent. We test the model by comparing the equation of state with the
lattice gauge theory simulations of SU(3) pure gluodynamics .
