Depending on when you ordered your Steam Deck console and just plain old luck of the draw, you could end up with a model configured with a downgraded solid state drive (SSD). Affected units cut the available bandwidth in half, impacting the theoretical maximum data transfer rate. However, Valve says it’s no big deal for gaming.

Valve updated

Source: Hot Hardware – Valve Quietly Gimps SSD Bandwidth On Some Steam Decks But Says Don’t Worry About It