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What is the latest on just turning of SMT/Hyperthreading? Then you don't run into the greater than 64 threads issue with this CPU? I remember there being a reas
by tareqak 7y ago
What is the latest on just turning of SMT/Hyperthreading? Then you don't run into the greater than 64 threads issue with this CPU? I remember there being a reason to turn it off unrelated to performance, but I do not remember if there was more than one reason [0].
[0] https://marc.info/?l=openbsd-tech&m=153504937925732&w=2 https://marc.info/?l=openbsd-tech&m=153504937925732&w=2
- bluedino 7y agoOr save $1990 and just buy the 3970X
- masklinn 7y agoThe 3970X has half the threads because it has half the cores, not because SMT is disabled. You may want to avoid the issue by giving up 10% if your performances, less so by giving up 50%.
- gameswithgo 7y ago3970X also has much higher clock rates though! Might be a net win for some workloads.
- tareqak 7y agoYes, but if you care about 64 threads without the possible side-channel issues that SMT currently/theoretically has, then you are back to the 3990X. For what it is worth, I have an AMD Ryzen 2700X Eight-Core Processor that I got in 2018, and I keep SMT off. I do some light gaming with it, and I am happy. I did not notice a big drop in performance, but I did not truly measure the difference.