Amd zen has problems with usb 3.1 controller

AMD Zen is the new high-performance x86 architecture that will debut with Summit Ridge processors and will later ship to Raven Ridge APUs. Zen is currently under development and its arrival on the market is expected at the end of 2016 although actual availability in stores could be delayed in early 2017. The performance of this new microarchitecture is very encouraging but its great complexity has caused the first known problems with the USB 3.1 interface.

AMD Zen could have major problems with its built-in USB 3.1 controller

The AMD Zen architecture integrates all the chipset logic into the processor itself making the motherboards completely chipset-free. This integration of elements in the die of the processor itself is very complex and rumors suggest that AMD is having problems with the integrated USB 3.1 controller, ASMedia is the company in charge of the Zen USB 3.1 controller.

This integrated controller would be causing bandwidth loss problems on the USB 3.1 bus as the distance of the circuit increases, for example by connecting the USB 3.1 ports of the chassis to the headers furthest from the motherboard. This problem would be causing motherboard manufacturers to have to implement additional controllers on their motherboards to achieve acceptable bandwidth levels, which increases the final cost of motherboards.

AMD has stated that the development of Zen is on track and as planned, they have also said that they will not talk about the peculiarities that motherboard manufacturers install in their models. A DigiTimes report ensures that Zen-based processors are developing steadily and are about to enter their engineering sample phase.

Source: techpowerup