What is the primary function of a graphics card's VRAM (Video RAM)?
Answer and explanation
Correct answer: A. To store textures, 3D geometry meshes, framebuffers, and shader data accessed rapidly by the GPU
- Step 1: Real-time 3D rendering and compute shaders require thousands of megabytes of texture maps and high-resolution render targets.
- Step 2: Dedicated VRAM (such as GDDR6 or HBM) sits on high-speed wide memory buses directly adjacent to the GPU silicon, providing hundreds of gigabytes per second of memory bandwidth.
Answer
To store textures, 3D geometry meshes, framebuffers, and shader data accessed rapidly by the GPU
Why not the others: 'To store the operating system kernel and core system drivers' The OS kernel and drivers reside in system RAM and secondary storage, not dedicated graphics VRAM; 'To cache CPU L3 memory instructions during gaming workloads' CPU L3 cache is an on-die SRAM array in the processor, entirely distinct from graphics card VRAM; 'To buffer power delivery ripples between the power supply and GPU VRM' Capacitor banks in the power delivery network smooth electrical ripples, not video memory chips.
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