AMD's CTO claims that the company has not expressed any intention to implement support for four threads per core in future processors. The idea of SMT4 itself is not so premature - much in this area depends on the availability of software that can realize the benefits of multithreading in this version. IBM, for example, has long offered server processors that support this number of threads per core.
In an interview with the site AMD CTO Mark Papermaster answered a question about the possibility of implementing support for four threads per core in the desktop segment and began his comment by stating that there are no official commitments at this time. Rumors attributed AMD's intentions to implement SMT4 support in Milan server processors with Zen 3 architecture, but official presentations published later denied this information.
Mark Papermaster tried to talk about SMT4 as abstractly as possible, emphasizing his reluctance to associate this idea with the company's existing plans. Under these conditions, he assessed this processor function quite objectively. According to him, in the desktop segment now some users even disable core multithreading. Some apps benefit from this feature, some don't. The concept of processing four threads with one core is not new; it has long been used in the server segment. Mark even referred to the existence of hardware solutions with SMT4 support, gently hinting at IBM Power processors, which acquired this capability at the beginning of this decade. In fact, as Mark argues, the justification for implementing SMT4 is determined only by the presence of a critical mass of applications that can effectively work with it in a specific market segment.
Source: 3dnews.ru