3 7 SYSTEM COMPONENTS Memory TESTOUT PC PRO

Section Skill Overview Classify different types of RAM Distinguish between different standards of DRAM

Key Terms Static RAM (SRAM) Dynamic RAM (DRAM) DDR TESTOUT PC PRO

Key Definitions Static RAM (SRAM): Stores data using four transistors for every bit of

DDR Once command per clock cycle Two 64 -bit words of data 2. 5

DDR 2 Four data sets per clock cycle 1. 8 volts 200 - 533

DDR 3 Eight data sets per clock cycle 1. 5 volts 400 - 1000

DDR 4 Eight 64 -bit words of data 1. 2 volts 2 BH -

Class Discussion What is the difference between SRAM and DRAM? What are two advantages

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3. 7 SYSTEM COMPONENTS Memory TESTOUT PC PRO

Section Skill Overview Classify different types of RAM Distinguish between different standards of DRAM TESTOUT PC PRO

Key Terms Static RAM (SRAM) Dynamic RAM (DRAM) DDR TESTOUT PC PRO

Key Definitions Static RAM (SRAM): Stores data using four transistors for every bit of data. Dynamic RAM (DRAM): Stores data using a single transistor for every bit of data. DDR: Double-Data Rate Synchronous Dynamic RAM TESTOUT PC PRO

Random Access Memory TESTOUT PC PRO

DRAM Types TESTOUT PC PRO

DDR Once command per clock cycle Two 64 -bit words of data 2. 5 volts 100 -200 MHz TESTOUT PC PRO

DRAM Types TESTOUT PC PRO

DDR 2 Four data sets per clock cycle 1. 8 volts 200 - 533 MHz Buffer between data bus and memory TESTOUT PC PRO

DRAM Types TESTOUT PC PRO

DDR 3 Eight data sets per clock cycle 1. 5 volts 400 - 1000 MHz TESTOUT PC PRO

DRAM Types TESTOUT PC PRO

DDR 4 Eight 64 -bit words of data 1. 2 volts 2 BH - 16 GB TESTOUT PC PRO

DRAM Types TESTOUT PC PRO

Memory Speed TESTOUT PC PRO

Class Discussion What is the difference between SRAM and DRAM? What are two advantages of using DDR 3 memory over DDR 2 memory? What is the difference between SODIMM and Uni. DIMM? How does DDR 4 differ from DDR 3? What does the IMC do? TESTOUT PC PRO