What Is VRAM?
VRAM is the graphics memory used by a GPU. Its capacity can affect which textures and rendering workloads a game can handle comfortably.
VRAM vs system RAM
System RAM is general-purpose memory used by the CPU and operating system. VRAM is memory attached to or reserved for graphics work. Integrated GPUs can use shared system memory instead.
What uses VRAM?
Textures, frame buffers, rendering targets and some graphics features consume graphics memory. Higher resolutions and higher texture settings can increase the demand.
Capacity isn't speed
More VRAM does not automatically make a GPU faster. GPU compute performance, memory bandwidth, architecture and the game workload also affect FPS.
When capacity becomes a limit
If a workload needs more graphics memory than is comfortably available, performance and frame consistency can suffer. The exact point depends on the game and settings.