dell-types of memory fully solved graded A+ 2023/2024

dell-types of memoryDDR - correct answer Double Data Rate- a type of memory where data is transferred on both the rising and falling edges of the clock signal DDR2 - correct answer double pumps the data bus. DDR2 allows higher bus speed and requires lower power by running the internal clock at half the speed of the data bus DDR3 - correct answer continues the evolution in memory tech. and provides several improvements to the existing DDR2 architecture. the primary benefit is an increase of the I/O bus to operate at 4 times the speed of the memory cell it contains. DDR3 also allows for chip cabacities from 512MB to 8 GB. this ability in effect allows for memory modules of up to 16GB in size. -higher speeds -doubled prefetch buffer. doubles the prefetch buffer from 4 bits to 8 bits. the increase in the data transfer rate provided by DDR3 does not require faster operation of the memory core. only external buffers start working faster. -on module termination: DDR3 uses fly by topology with on module signal termination to transfer addresses, management, and stabilization commands. it means that the signals are sent to all chips of the memory modules one by one, and not altogether at the same time. this allows for more efficient data flow, storage and retrieval. -Read/write leveling: ddr3 controllers now have to successfully reco DDR3L - correct answer the 3l in the name stands for low voltage. JEDEC introduced two low voltage standards. the ddr3l standard is 1.35v and has the label pc3l for its modules. DDR4 - correct answer improves upon the DDR3 SDRAM generation in terms of capacity, performance scalability, and power efficiency, as well as system level reliability, availability, and serviceability. at the same time, DDR4 must minimize changes that hinder design migration and adoption of the new industry standard component. SODIMM - correct answer small outline dual in line memory module. used for portable devices. uses integrated circuits.