One of the defining characteristics of AMD’s Ryzen processors is their dependence on the speed of installed memory. However, it could be that this problem ends up disappearing in processors that would make use of V-Cache. Since it has been discovered that the 5800X3D is not picky about RAM. Why does this phenomenon occur?
Cache memory is nothing more than a type of internal memory that stores a copy of RAM memory, so that the processor can access data more quickly. That is, it takes fewer clock cycles to execute said instruction. If we take into account that the performance of a processor depends on the number of instructions it can execute in the longest possible time. Therefore, one way to increase the performance of a processor is to increase the amount of cache memory available to it.
However, since the cache memory is usually located inside the processor, it is limited and as we have said many times, the solution of AMD with its V-Cache for its 5800X3D It consists of placing an SRAM memory chip installed on top of the processor. This causes the amount of L3 to increase from 32 MB to 96 MB, thereby increasing the chances that the CPU will find the data before asking RAM for it. The only counterpart? It is somewhat slower to access, but the benefits far outweigh the drawbacks.
Why doesn’t the AMD Ryzen 7 5800X3D need high-end RAM?
It turns out that several performance tests have been done with the AMD Ryzen 7 5800X3D and installing different modules of DDR4 RAM, but at different speeds to see if it is worth buying more expensive memory or it is simply reduced in a waste of money. And it is that buying a component that is more expensive, but that is not going to give us any advantage for our PC is not a good idea, nor a good way to manage the budget of our PC.
Well, in several tests where he has used DDR4-3800 memory and has been compared to using DDR4-320 memory0, it has been possible to see how the difference in performance when testing several games at Full HD resolution it’s only 1%. Taking into account the price difference in DDR4 modules of different speeds, the fact that the 5800X3D is not demanding on RAM is good news for those who want to build a Gaming PC with this AMD processor.
The increase in performance is due, obviously, to the fact that the chances of finding the information in the cache are multiplied by three. Which is much faster not only in access time, but also in bandwidth. In any case, the result is surprising, since the amount of L3 cache even with V-Cache does not exceed the amount of bandwidth per frame. Even at speed rates of 120 and even 144 FPS.