IBM and the Designers of the POWER6 cores went all the way up to 6 GHz and had them operational. The current POWER7 chips can go up to 4.25 Ghz and they have something like 32 Threads per chip
The T2 processors from Sun had over 100 threads per chip. Its a shame that they didn't do better in the market place.
T2s were pretty slow tho, we tried running ruby on them and they couldn't do it. Even with Java it was pretty mediocro performance. A dual core intel could kill a 120 thread sun box by a large margin
The T2 processors from Sun had over 100 threads per chip. Its a shame that they didn't do better in the market place.