[tyingq]

Or to roll out more ARM, where there isn't currently any hyperthreading.

[jamieiles]

Thunder X2 and X3 has 4 way SMT for general purpose, but yes, more ARM is good :-)

[hajile]

4-way and 8-way SMT is about latency hiding (like MIMT in GPUs, but more flexible). It increases the probability that at least one thread has data it can be crunching.