After the 12th generation of Core was listed, the DDR5 memory of major manufacturers and various frequencies also opened the veil of mystery. From the current product point of view, the frequency change of DDR5 is 400MHz as a ladder, such as the Ryzen™ 7000 just announced at CES will support DDR5 5200. But look at the current evaluation, DDR4 is enough and not expensive, why do you want DDR5? Not to mention the higher frequency DDR5, is it a chicken rib? Let's take a look at it today.
Let's first talk about why manufacturers are so "hungry" DDR5, let's compare the memory of these frequencies, especially the dual-channel bandwidth that high-end users and players will definitely use, and how many advantages are there compared with the DDR4 memory, PCIe ×16 high-bandwidth slots that everyone is already familiar with?
This comparison can see the problem, even if the entry of the DDR5 4800, its bandwidth relative to the DDR4 increase is also very obvious, the future products will quickly approach or even more than 100GB / s, such bandwidth in the future CPU with the ability is obviously very good, it is no wonder intel and AMD will quickly switch to DDR5, and even in the frequency support so quickly "rolled up".
The bigger problem is that the two CPUs that support DDR5 have begun to support PCIe 5.0 at the same time, and its channel bandwidth has also increased significantly, to cooperate with the corresponding graphics card, especially to open AMD's SMA, which is a full-memory read and write technology, it is necessary to use DDR5 memory, otherwise the PCIe 5.0 expansion card will completely occupy the memory bandwidth when it is full of speed reading and writing, which will definitely affect the stability of the system. Of course, a closer look at the comparison will find that it is no wonder that DDR4 3600 has become a new favorite, because it can really "make up" before PCIe 5.0.
Of course, after reading these statements, the small partner should not be nervous, let alone rush to get into DDR5 now, because now it is really expensive, and the important thing is that the PCIe 5.0 graphics card mentioned has not yet come out. What we have to do now is to understand this when buying a new platform, such as choosing DDR4 memory now, so it is good to use the inexpensive PCIe 5.0 graphics card (prayer), we want to use it well, it is possible to change the DDR5 motherboard Oh.