From Intel's support site:
These are the specifications for the integrated graphics solution on the Intel® Desktop Board D101GGC.
Integrated Radeon* X300* based graphics solution
Memory is shared with system memory
Up to 4GB system memory (with up to 256MB reserved graphics memory)
Users can set maximum automatic memory to share with steppings of 32MB, 64MB, 128MB and 256MB. If more memory is needed, it is allocated dynamically through system memory by the driver.
Full DirectX* 9.0 Support (Vertex Shader v2.0 and Pixel Shader v2.0)
Supports resolutions up to 2048x1536 @32bpp
SmartShader* 2.0 allows complex, movie-like 3D effects
SmoothVision* 2.1 improves image quality through anti-aliasing using multi-sampling algorithm with support for 2,4, and 6 samples