Windows 10 is not optimized with amd ryzen 7 smt

The AMD Ryzen 7 processors have been officially on sale for a few days now, the new CPUs from the Sunnyvale company have been a resounding success with exceptional performance that puts them on par with the best Intel processors and with energy efficiency higher. The only negative point of the new Ryzen 7 is that in the case of games they have shown a lower performance than expected and seen in other scenarios, something that has caused many users to attack them unfairly accusing them of being the " Bulldozer 2.0 ”when they have nothing to do. New information has appeared and this time it points to Windows 10 being to blame for AMD's new processors not performing at the level expected in games.

Windows 10 has to adapt to AMD Ryzen

Windows 10 has a serious problem in its task scheduler when it comes to working with the new AMD Ryzen 7 processors, the operating system is unable to differentiate the physical from the logical cores of the new AMD processors. This problem occurs because AMD's SMT technology works differently than Intel's HT, both achieve the same goal of achieving two logical cores for each physical core, but the operation is different.

The problem is that the Windows 10 task scheduler identifies Ryzen's 16 logical cores as if they were all physical cores when in reality there are only eight of each type. Logical cores have fewer resources and much less capacity to execute tasks, hence the problem. Windows 10 assigns the tasks equally to all the cores without differentiating the physical from the logical ones, this causes an excessive saturation of the processor and a very important decrease in the performance that it is capable of offering under ideal conditions.

This is not the only problem, Windows 10 also fails to recognize the cache memory of Ryzen 7 processors, the operating system believes that CPUs have 136 MB of memory when they "only" have 20 MB, yet another pitfall to which Ryzen has to face.

AMD Ryzen has its weak spot in L3 cache by CCX design

Remember that AMD Ryzen is based on the Zen microarchitecture, a new x86 processor design that has been created from scratch, so it is expected that the current software will have to adapt to its characteristics in order to take full advantage of it. This is not something out of the ordinary, in fact the first generation of Intel Core processors, the Nehalem, has already been involved in problems related to its HT technology that caused loss of performance.

In our opinion, the most important thing now is that AMD and Microsoft work together to solve these problems as soon as possible and the new AMD Ryzen processors can perform to the best of their ability. Finally we highlight that this problem does not exist in Windows 7.

Source: wccftech