COA | Unit-4 | Lecture-50 | Set Associative Cache Mapping | AKTU B.Tech Computer Science

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In this video, we explain the concept of Set Associative Mapping — one of the most widely used cache memory mapping techniques in modern computer systems.

You’ll learn how blocks are placed into sets, how tag comparison works, and why set associative mapping strikes a balance between direct mapping and fully associative mapping.
We cover all important concepts including:

🔹 What is Set Associative Mapping?
🔹 How Cache is Divided into Sets
🔹 Block → Set Mapping Formula
🔹 Tag, Index, Offset Fields Explained
🔹 k-way Set Associative Mapping (2-way, 4-way, 8-way, etc.)
🔹 Advantages & Limitations
🔹 Comparison with Direct & Fully Associative Mapping
🔹 Examples and Step-by-Step Address Translation

With easy diagrams, formulas, and numerical examples, this lecture helps you clearly understand how set associative mapping improves hit ratio while reducing conflicts.

This topic is part of Unit 4 – Memory Hierarchy in the AKTU COA syllabus and is extremely important for GATE, NET, and competitive exams in Computer Science.

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Видео COA | Unit-4 | Lecture-50 | Set Associative Cache Mapping | AKTU B.Tech Computer Science канала CS Pathshala | Vishvendra Chaudhary