Short definition: VRAM is the dedicated memory on a graphics card that stores textures, frame buffers, models and other visual data needed to render graphics smoothly.
Detailed explanation: VRAM, or video random access memory, is used by the GPU to hold the data required for drawing images on screen. In flight simulation, this includes aircraft textures, cockpit displays, terrain data, shadows, lighting information and anti-aliasing buffers. When there is enough VRAM, the graphics card can access this data quickly and maintain stable image quality and performance. If VRAM runs short, the system may need to move data in and out of slower system memory, which can cause stutters, texture pop-in, lower settings or reduced frame rates. VRAM capacity matters most at higher resolutions, with complex scenery, detailed add-ons and multiple displays.
Key considerations:
- A practical limitation is that VRAM cannot usually be upgraded separately from the graphics card.
- A common mistake is assuming that more VRAM alone will improve performance, even when the GPU itself is the main bottleneck.
- A real-world impact is that insufficient VRAM can make dense airports or high-resolution cockpit textures run poorly.
Further Reading: VRAM – Wikipedia
