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What is the required voltage of DIMM?

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What is the required voltage of DIMM?

(a) 2V

(b) 2.2V

(c) 5V

(d) 3.3V

The question was posed to me by my college professor while I was bunking the class.

My question is from Memory Management topic in chapter Memory Systems of Embedded Systems

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Correct option is (d) 3.3V

To explain I would say: For increasing the speed and reducing the power consumption, it is necessary to reduce the power supply. Today’s CPUs and memories have 3.3V supply or even lower instead of the signal level from 0 to 5V. DIMMS are described by its voltage, speed, and memory type respectively as 3.3V 133MHz SDRAM DIMM.

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