One of the defining characteristics of AMD’s Ryzen processors is their reliance on the speed of installed memory. However, this issue might eventually disappear in CPUs that use V-Cache. Since it was 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 faster. 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 it has.
However, since the cache memory is usually located inside the processor, it is limited and as we have said several times, the solution of AMD with its V-Cache for its 5800X3D It consists of placing an SRAM memory chip installed above the processor. This increases the amount of L3 from 32MB to 96MB, increasing the chances that the processor will find the data before requesting it from RAM. The only counterpart? It’s a bit slower to access, but the pros far outweigh the cons.
Why doesn’t the AMD Ryzen 7 5800X3D need high-end RAM?
It turns out that several benchmarks were run with the AMD Ryzen 7 5800X3D and installing different DDR4 RAM modules, but at different speeds to see if it’s worth buying more expensive memory or if it is simply reduced to a waste of money. And it is that buying a component that costs more, but that will not 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 used DDR4-3800 memory and has been compared to using DDR4-320 memory0, it was possible to see how the difference in performance when testing multiple games at Full HD resolution it’s only 1%. Considering the difference in price of DDR4 modules of different speeds, the fact that the 5800X3D is not RAM intensive is good news for those who want to build a gaming PC with this AMD processor.
The increase in performance is due, of course, 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 speeds of 120 and even 144 FPS.
