The estate's Grand Vin's vineyards are located west of Ordonnac village. Its rows of vines grow on a double thalweg of gravelly-clay. They produce a very fine wine with tight texture, great richness and wonderful freshness. On the palate, the wine is pure and powerful, the tannins dense and spicy, and the finish of great depth with glorious aromas. Because of these qualities, Château Potensac is often considered to represent the "pure Medoc style". It should be noted that Potensac was the only "Cru Bourgeois Exceptionnel" of its appellation.

Vintage 2003 was an exceptional year with a good ageing potential.