Types of ram
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Transcript of Types of ram
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Types of RAM
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• There are three types of RAM :
DRAM • Dynamic Random Access memory
SRAM • Static Random Access memory
MRAM• Magnetoresistive
Random Access memory
RAM
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Dynamic Random Access memory
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Dynamic Random Access Memory
Has memory cells with a paired transistor & capacitor.
Each bit data is store in separate capacitor .
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Dynamic Random Access Memory
Capacitor may be charged or uncharged.
Charging & discharging represent the two values of data (0,1)
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Dynamic Random Access Memory
Types are:
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Static Random Access Memory
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Static Random Access Memory
Uses multiple transistors for cell.
Doesn't have a capacitor in each cell.
It is made up of flip flop circuit.
It use voltage to store data.
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Static Random Access Memory
Each SRAM is made of six transistors.
Each bit in an SRAM is stored on four transistor or more.
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Types are:
Static Random Access Memory
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Static vs Dynamic
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Magneto resistive Random Access memory
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Magnetoresistive Random Access memory
Stores data using magnetic charges instead of electrical charges.
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Greater storage capacity.
Consumes less power.
Faster access times than electronic RAM.
MRAM retains its contents after power is removed from the computer.
Magnetoresistive Random Access memory
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DDR SDRAMDDR3 DDR4
SDRAM – 66Mhz, 100Mhz, 133Mhz DDR1 – 266Mhz, 333Mhz, 400Mhz DDR2 – 400Mhz, 533Mhz, 677Mhz, 800Mhz DDR3 – 400Mhz, 533Mhz, 677Mhz, 800Mhz, 933Mhz, 1066Mhz DDR4 – 1600Mhz, 1866Mhz, 2133Mhz, 2400Mhz, 2666Mhz, 3200Mhz, 4266Mhz
JEDEC Solid State Technology AssociationJoint Electron Device Engineering Council
1.5 or 1.65 v 800 and 2400
16 Gb
1.2 v1600 and 3200
128 Gb
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Types of DRAM
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Thank you