CompTIA A+ 220-1101 (V14) Practice Question

To handle complex video rendering tasks, especially with 4 K content, the aspect of the video card that becomes paramount is the memory bandwidth. Higher memory bandwidth allows the GPU to move the large amounts of data required for high-resolution video frames quickly between VRAM and the GPU cores, preventing bottlenecks during playback and rendering. Although having sufficient VRAM capacity is also important, inadequate bandwidth can still throttle performance even when plenty of VRAM is available. Bus interface (PCIe lane width) and thermal design power (TDP) affect performance and cooling, and DirectX versions are more relevant to gaming features, but none impact raw 4 K video throughput as directly as memory bandwidth.