GPU Undervolting 1 story

GPU Undervolting narrows the wider Graphics & GPU Technology topic to one technical layer, making it easier to reason about function, configuration, and interoperability. The semantic core includes graphics card voltage tuning, GPU voltage curve, graphics card efficiency tuning, and graphics card power efficiency, which together define the functions, interfaces, and operating behavior that make this topic different from adjacent components. This keeps the tag narrower than Graphics & GPU Technology as a whole while giving readers enough context to evaluate compatibility, configure the feature correctly, and recognize when a separate problem-specific tag applies.