Sun sparc vii m9000
SPARC VII processors have 4 cores and Simultaneous MultiThreading (SMT) which allows them to run 8 threads simultaneously.
L1 cache is 128Kb per core and L2 cache is 6Mb per CPU chip there is no L3 cache.
8 CPUs will allow for simultaneous execution of 64 threads.
You appear to be getting threads and cores confused. Each CPU contains 4 cores. Each core can execute 2 threads simultaneously.