The favorite place to find antything related to dedicated chess computers should be Schachcomputer.info. It has a perfect database about any chess computer ever sold, as well as a live forum where addicted people still share information about their machines. They still conduct online tourneys as well.
After a pause longer than expected (which skipped 2016), they have released in the beginning of this year, an important update of their Activeschach rating list. This list is based on games played at 30'/game or 30sec/move time controls.
I think the list still remains very interesting because it has a correlation with SSDF's list and features hundreds of machines. However, do not be surprised to see 2405 ELO on top. These machines don't have octa core Intel's.