問95
頻出度★☆☆
ターボブーストとも呼ばれるコンピュータの処理性能向上技術に関する説明はどれか。
平成30年度 秋期 ITパスポート試験 問95
テクノロジ系コンピュータ構成要素 › プロセッサ
This question's explanation and your answers so far.
解説
問 95
Incorrectア
“Placed between the CPU and main memory to compensate for the slow read/write speed of main memory” describes cache memory, a small-capacity high-speed memory. It is a different technology from Turbo Boost, which raises the operating frequency.
- イ
正解 Turbo Boost (called Intel Turbo Boost, or Turbo Core on AMD, etc.) is a technology that, when there is headroom in the CPU’s allowable heat output (TDP) and power consumption, automatically raises the operating frequency of the cores above the base clock to temporarily boost processing performance. It speeds up only some of the heavily loaded cores, and returns the frequency to normal as heat and power approach their limits. Choice イ, “when there is headroom in the CPU’s allowable heat output and power consumption, it raises the operating frequency of the cores,” is exactly this description, so it is the correct answer.
Incorrectウ
“Having multiple computational cores inside the CPU and executing multiple processes simultaneously” describes a multi-core processor. It performs parallel processing by increasing the number of cores, which differs from Turbo Boost, which dynamically raises the frequency.
Incorrectエ
“Sharing the CPUs of multiple computers to execute a huge volume of processing in a distributed manner” describes grid computing (distributed processing). It distributes the work among multiple machines over a network, which is unrelated to Turbo Boost, which raises the frequency of a single CPU.
ここがポイント
- Turbo Boost = a technology that, when the CPU has headroom in heat output and power consumption, automatically raises the operating frequency (clock) above the base value to improve processing performance.
- Distinguish the easily confused speed-up technologies: cache memory (compensates for the speed gap with main memory), multi-core (has multiple cores for parallel execution), and grid computing (distributed processing across multiple machines).
用語