AMD has revealed its Ryzen 5 series of chips ranging from US$169 to US$249. As the name suggests, AMD is pitching the Ryzen 5 as a superior choice to Intel's i5 7600K.
http://www.notebookcheck.net/AMD-Ryzen-5-revealed-as-competitor-to-Intel-s-Core-i5.207088.0.html
"have 6 cores and 8 threads"
Should be:
have 6 cores and 12 threads
"In addition to the Ryzen 5 series, the Taiwanese company also introduced its AM4 platform."
Hate to tell you but AMD is an American corporation not Taiwanese (even if the CEO, Lisa Su was born in Taiwan).