Is memory better in DDR or SD? What are some good brands?

DDR is an upgraded version of SD.

What do you want? With Kim Sheton or Samsung's.

What does DDR and SDR memory mean on a desktop computer and how can you tell the difference? What are the advantages of each?

What does DDR and SDR memory mean on a desktop computer and how can you tell the difference? What are the advantages of each? Hello dear, the specific differences between SDRAM and DDR are as follows:

1. There is a difference in transmission rate: the traditional SDRAM can only transmit data on the rising edge of the signal, while DDR can only transmit data on the rising edge and falling edge of the signal, therefore, the data transmission amount of DDR memory in each clock cycle is twice that of SDRAM, which is also the meaning of DDR dual data rate and dual data rate. 2. There are differences in the appearance slots

DDRs differ from SDRAM in shape and size, they have similar size and pitch, and the standard DDR memory module is a 184-pin DIMM (double-sided DIMM). The DDR is very similar to the standard 168-pin SDRAM, with the biggest difference being that the DDR uses only one slot, while the SDRAM uses two. 3. There are differences in design

Compared to SDRAM, DDR employs more advanced synchronization circuitry, which makes the main steps of sending and outgoing specified addresses and data not only independent, but also fully synchronized with the CPU. DDR uses delay-locked cyclic ring technology, which the memory controller can use to filter the data to pinpoint the data when it is active, output it every 16 times, and resynchronize the data from the different memory modules. I hope I can help you!

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There is a very important part of the structure of a computer, which is memory. Memory is a part used to store programs and data, for a computer, with memory, there is a memory function, in order to ensure normal operation. There are many types of memory, which can be divided into primary memory and auxiliary memory according to their purpose, and the main memory is also known as internal memory (referred to as memory).

Memory is the main component in a computer, and it is relative to external memory. The programs we usually use, such as windows98 system, typing software, game software, etc., are generally installed on external memory such as hard disks, but only this can not use its functions, they must be transferred to the memory to run, in order to really use its functions, we usually enter a piece of text, or play a game, in fact, are carried out in memory. Usually we store a large amount of data to be stored permanently in external memory, and put some temporary or small amounts of data and programs in memory.

Memory is where programs and data are stored, for example, when we use WPS to process a document, when you type a character on the keyboard, it is stored in memory, and when you choose to save, the data in memory will be stored in a hard (magnetic) disk. Before we can understand it further, we should also recognize its physical concepts. Memory generally uses semiconductor memory cells, including random access memory (RAM), read-only memory (ROM), and cache.

Simply because RAM is the most important memory of them all. S (Sysnecronous) DRAM Synchronous Dynamic Random Access Memory: SDRAM is 168 pins, which is the memory currently used by Pentium models and above.

SDRAM locks the CPU and RAM together through the same clock, enabling the CPU and RAM to share a clock cycle, work synchronously at the same speed, and the rising edge of each clock pulse starts to pass data at a speed that is 50% faster than EDO memory. DDR (Double Data Rage) RAM: An update to SDRAM that allows data to be transmitted on the rising and falling edges of the clock pulse, so that the speed of SDRAM can be doubled without increasing the frequency of the clock.

Memory can also be called main memory. It is a storage space that can be directly addressed by the CPU, and is made of semiconductor devices. Memory is characterized by a fast rate of accessing data.

Memory is the main component in a computer, and it is relative to external memory. The programs we usually use, such as Windows operating system, typing software, game software, etc., are generally installed on external memory such as hard disks, but only this can not use its functions, they must be transferred to the memory to run, in order to really use its functions, we usually enter a piece of text, or play a game, in fact, are carried out in memory. It's like in a study room, the shelves and bookcases where books are stored are equivalent to the external memory of the computer, and the desk we work on is the memory.

Usually we store a large amount of data to be saved permanently in external memory, and put some temporary or small amounts of data and programs in memory, of course, the quality of memory will directly affect the running speed of the computer.

Compared with SDRAM: DDR uses more advanced synchronization circuitry, so that the main steps of specifying address, data transmission and output can be performed independently, and the CPU is fully synchronized. DDR uses DLL (Delay Locked Loop) technology, which is used by the memory controller to pinpoint the data when it is active, output it every 16 times, and resynchronize the data from the different memory modules. DDR essentially does not require an increase in clock frequency to double the speed of SDRAM, and it allows data to be read out on the rising and falling edges of the clock pulse, thus being twice as fast as standard SDRAM.

In terms of form factor, DDR is not much different from SDRAM, they have the same size and the same pin distance. However, the DDR is 184 pins, 16 more than SDRAM, and mainly contains new control, clock, power, and ground signals. DDR memory uses the SSTL2 standard, which supports voltage, rather than the LVTTL standard for voltages used by SDRAM.