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8 votes
8 votes

In comparison with static RAM memory, the dynamic Ram memory has

  1. lower bit density and higher power consumption
  2. higher bit density and higher power consumption
  3. lower bit density and lower power consumption
  4. higher bit density and lower power consumption
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2 Answers

Best answer
16 votes
16 votes
Static RAM has lower density because there are total 6 Transistors(Occupying More Space) while DRAM has one transistor and capacitor.

Therefore the Density (SRAM) < Density of (DRAM).

 

Power Consumption:

As DRAM has a capacitor it, continuously leaks current. Therefore it requires frequent refresh which consumes power.

Therefore Power Consumption(DRAM)> Power Consumption(SRAM)
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15 votes
15 votes

SRAM

DRAM

Data stored

Flip flop gates

Charge on capacitor

Definition

Holds the data as long as power is given; hence the name static RAM

Even though power is on, capacitor charge may leak away. Periodic refresh is needed. Hence the name Dynamic RAM

Speed

Faster

Slow

Packing Density

SRAM cell is made up of 6 transistors; it has poor density

DRAM is made up of MOS and capacitor; it has four times better density of SRAMs.

Cost

Expensive

The cost per bit of DRAM storage is three to four times less than that of SRAM storage

Power consumption

Less power

Consume more power to refresh capacitor

Suitable for

Small memory Eg: Cache

Large memory Eg: main memory

hence answer must be B

Answer:

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