It is worth mentioning in advance what Robert Hallock from AMD marketing said, according to which V-Cache is especially suitable for processors in game sets. It is well known that modern PC games are very sensitive to memory latency. It is software that is difficult to predict, as the game would have to guess how the player will behave, which is difficult. This keeps reading from memory, and data needs to be available as soon as possible. So if we can store more data in the fast L3 cache directly in the processor, there is a greater chance that it will not have to be read from RAM, which is why games can run faster.
According to Hallock, it can be up to 40 percent compared to Ryzen without V-Cache, although the average will of course be much lower, and according to official data, 15 percent and more memory is more than to compensate for frequency loss. Compared to the Ryzen 7 5800X, the beats of the 5800X3D will be reduced, from 3.8 to 4.7 GHz to 3.4 to 4.5 GHz, due to the higher concentration of chips in a small place, which makes efficient heat dissipation difficult and also goes that AMD still wanted to have a TDP 105 W, some of which, of course, would take a chip with V-Cache, so that’s why the beats had to go down. Thanks to overclocking, however, it will be possible to increase the frequency again, but of course the result is not guaranteed.
But why isn’t there a Ryzen 9 5900X with V-Cache, on which AMD demonstrated this memory last year? As this is primarily a game, the Ryzen 7 5800X was chosen, which AMD sees as the most suitable in its offer for the given purpose. It is also a price, because the implementation of V-Cache is said to be expensive. From this point of view, it would not make sense to put it on dual-chip processors and, in fact, on less than 8-core processors, when it comes to such an expensive thing.
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Source: Svět hardware by www.svethardware.cz.
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