Inscription bars, we all know that it is an indispensable part in the computer platform, the first to start until the present DDR2, DDR3, DDR4 memory strips. With the development of technology, DIY's various products are endless, while magnesium becomes the old manufacturers of memory. For countless Wang Jia, providing the tip equipment of the vertical game. According to the news in October, Cadence and Magnesium have announced their DDR5 memory research and development progress, two Home vendors began R & D 16GBDDR5 products and planned to achieve mass production targets before 2019.
The announcement file from the magnesium light can know that DDR5 memory will start from 8GB capacity, up to 32GB, I / O bandwidth can reach 3.2-6.4Gbps, and the voltage is 1.1V, the memory bandwidth will be twice the DDR4 memory! As the successor of DDR4, there is definitely to DDR4 in DDR4 in DDR5.
Cadence indicates that the DDR5 function increases the actual bandwidth by 36% compared to DDR4, even at 3200mt / s and 4800mt / s speed, the actual bandwidth will be 87% higher than DDR43200, one of DDR5 is one of the most important features. It is over 16GB single chip density!
The main characteristics of DDR5 are chip capacity, not just higher performance and lower power consumption, DDR5 will have improved command bus efficiency, better refresh solutions, and increased storage groups to obtain additional performance.
As early as May this year, Cadence has taken out the DDR5 memory verification module. DRAM is from magnesium light, and the verification module product uses a 7nm process of TSMC with a frequency of up to 4400MHz.
Jedec's DDR5 standard has not yet emerged, but it is possible to officially announce the final norm in the end of this year, and the frequency starts at 4800MHz, up to 6400MHz. There is also a lower voltage, 32/40 bits per channel, and the bus efficiency is improved.
For memory bar, now many users generally have two aspects, the first parameter is memory or how much capacity, the second is the frequency of the memory bar, the main frequency of memory, and the case of the CPU. The habit is used to indicate the speed of memory, which represents the highest operating frequency that the memory can achieve. The memory frequency is measured as a unit of MHz. The higher the memory main frequency, the faster the memory can achieve, and the memory frequency parameters you know are 2133MHz, 2400MHz, 2666MHz, with DDR4. Some frequencies such as 2800MHz, 3000MHz, 3200MHz.
DDR5 has a operating frequency of up to 4,800, which is already exceeding the limit frequency of DDR4 memory, and the highest frequency announced to 6400MHz, which is twice as DDR4, what is this concept? If DDR5 is at the moment, I believe this is definitely a revolutionary meaning of reform replacement. The most important thing is that the voltage of DDR5 is reduced. The more high frequency is higher, and it is still benefited from How much NM process. I believe that DDR5 is officially produced in the next two years or three years, and the price of DDR5 guess what is the price? Will not appear like DDR4 in DDR3?
According to currently known, SK Hercules also announced successfully developed DDR5 memory particles that met Jedec standard specification, but the particle capacity was up to 2GB, which became the world's first standard DDR5 memory. The DDR5 memory granules developed by SK Hils are manufactured by 1YNM process, and the voltage meets the standard 1.1V, which compares the voltage of the previous generation of DDR4 memory 1.2, saves 30% power consumption.
The two major manufacturers' competition is the last thing that starts to achieve mass production in advance? Who's DDR5 memory strip is more rich, who is the performance more? These we are still not known now. But we can know that the arrival of DDR5 memory will set off huge wind waves for the memory market ~ will also become a DDR5 memory for our mainstream configuration.
in conclusion:
1, bandwidth speed
Compared with DDR4, the improved DDR5 function will increase the actual bandwidth by 36%, even at 3200mt / s (this statement must be tested) and 4800mt / s speed, the actual bandwidth will be 87% higher than DDR4-3200. .
2, single chip size density
One of DDR5 most important features will be more than 16GB single chip density.
DDR5 main features:
The main characteristics of DDR5SDRAM are chip capacity, not just higher performance and lower power consumption. DDR5 is expected to bring 4266 to 6400mt / s I / O speed, and the supply voltage drops to 1.1V, allowing the fluctuation range of 3% (ie ± 0.033V).
Each module uses two separate 32/40-bit channels (not using / or using ECC). In addition, DDR5 will have improved command bus efficiency (because the channel will have its own 7-bit address (add) / command (CMD) bus), a better refresh solution, and an increased storage group to obtain additional performance.
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