Distinctive SilverStone design recognized by the masses. Embodying the characteristics & qualities of the iconic Fortress FT03, ALTA G1M features a 90-degree rotated motherboard layout and a small overall footprint that's tall in height but short on depth. Hot air rises, and rising air cools. By following the natural convection of air, ALTA G1M's layout design combined with a pre-installed Air Penetrator 180mm fan, contributes to excellent bottom-to-top directional airflow (stack effect), which takes advantage of hot air's natural tendency to rise. Built for the highest-end of today's components. ALTA G1M is compatible with a maximum of a 360mm radiator whilst capable of accommodating graphics cards of any length, and of any height up to 4 slots.