Which of the following statements DOES NOT describe the primary difference between SRAM and DRAM in terms of their internal architecture and performance characteristics?​

Correct option is D

The correct answer is (D) SRAM is faster and more expensive, making it suitable for main system memory, while DRAM is slower and cheaper, making it ideal for Cache memory.

• Statement D is incorrect because SRAM is faster and more expensive, but it is not suitable for main system memory. DRAM is used for main system memory due to its lower cost and higher density, while SRAM is typically used for cache memory where speed is crucial.

• Statement A is correct: SRAM uses more transistors per cell (typically six) to store data, making it less dense than DRAM, which uses just one transistor and one capacitor per cell, making it more compact.

• Statement B is correct: SRAM provides faster access times compared to DRAM because it uses more transistors per bit, making it more complex but faster for accessing stored data.

• Statement C is correct: SRAM is faster because it does not require periodic refreshing of data, unlike DRAM, which needs to be refreshed regularly to retain its data, causing it to be slower.

• SRAM (Static RAM):

  • Faster because it stores data in flip-flops (a stable state) without needing refresh cycles.

  • More complex and uses more transistors, making it larger and more expensive than DRAM.

  • Typically used for cache memory and registers.

• DRAM (Dynamic RAM):

  • Uses a transistor and capacitor to store each bit, requiring periodic refreshing because the charge in the capacitor fades.

  • Cheaper and denser than SRAM, making it ideal for main memory in computers and other devices.

• SRAM is used in places where speed is critical, such as in cache memory in processors, while DRAM is used for bulk memory storage in devices due to its lower cost and higher density.