What does the clock speed of a CPU determine?

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1.
FLASHCARD QUESTION
Front
Back
Clock speed indicates how many cycles (or instructions) a CPU can execute per second, measured in hertz (Hz). For example, a 3 GHz CPU can perform 3 billion cycles per second. While higher clock speeds improve performance, actual speed also depends on factors like architecture and the number of cores.
2.
FLASHCARD QUESTION
Front
What is the purpose of the cache memory in a CPU?
Back
Cache memory is a small, high-speed memory located within or near the CPU. It stores frequently used instructions and data, reducing access time compared to main memory (RAM). For example, Level 1 (L1) cache is the fastest but smallest, while Level 3 (L3) cache is larger but slower.
3.
FLASHCARD QUESTION
Front
Which of the following is a key difference between a 32-bit and 64-bit CPU?
Back
A 32-bit CPU can handle data and memory addresses up to 32 bits, limiting it to 4 GB of RAM. In contrast, a 64-bit CPU can process larger data chunks and address significantly more memory (up to 16 exabytes theoretically). Additionally, 64-bit CPUs are faster for computations requiring large data sets.
4.
FLASHCARD QUESTION
Front
Which of the following best describes the Control Unit (CU) of a CPU?
Back
The CU manages the flow of data between the CPU's components and directs the operation of the ALU. It interprets instructions from memory, generates control signals, and ensures the proper sequence of execution, acting as the "orchestra conductor" of the CPU.
5.
FLASHCARD QUESTION
Front
Which of the following is a key factor in achieving high performance in a computer system?
Back
Superscalar architecture allows the execution of multiple instructions simultaneously by using multiple execution units. Another approach is data flow architecture, which processes instructions based on data availability rather than a program counter.
6.
FLASHCARD QUESTION
Front
Which of the following is an example of a performance-enhancing feature found in modern high-performance processors?
Back
Examples include pipelining, superscalar execution, out-of-order execution, branch prediction, hyper-threading, and SIMD (Single Instruction Multiple Data) instructions, which optimize parallelism and data processing.
7.
FLASHCARD QUESTION
Front
Which of the following operations are typically performed in floating-point hardware?
Back
Floating-point hardware handles addition, subtraction, multiplication, division, and normalization (adjusting the exponent and mantissa for standard representation).
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