Approximate amount of graphics memory available on the device, in MB.
The GPU driver provides this value. It represents the memory available for graphics use. On systems with a discrete GPU, this is typically the dedicated video memory (VRAM). On systems with an integrated GPU, including most mobile devices and many laptops, the GPU shares graphics memory with the main system memory. The platform determines the reported value. There is no separate property to distinguish dedicated VRAM from shared graphics memory. To query the total amount of system memory, use SystemInfo.systemMemorySize.
Note: On web platforms, this property returns a hardcoded fallback value. Web browsers don't allow access to the actual GPU memory size for security and privacy reasons. WebGL returns 512 MB, and WebGPU returns 128 MB. Treat these values as safe minimal approximations rather than the actual available VRAM.
Additional resources: SystemInfo.systemMemorySize.