'Ilpo Järvinen' via qubes-users <qubes-users@googlegroups.com> wrote:
> > Is it possible to get Xen in Qubes to enable hyperthreading? ... > > Are there any obvs pitfalls or technical issues to explain why Xen turns > > it off? > > Yes, HT is turned off intentionally for security purposes. Some of the > Intel CPU vulnerabilities demonstrated within the recent years depend on > the side channels within the resources shared by the threads of the same > physical core. Thus it's advisable to not enable it. Does that mean Intel's i7-9700 series of CPUs would be a near-ideal choice for a high-end Qubes desktop? Here's one of several available: https://ark.intel.com/content/www/us/en/ark/products/191792/intel-core-i7-9700-processor-12m-cache-up-to-4-70-ghz.html They're all 8 cores, no hyperthreading so 8 threads (enough?). This one runs at 3.0 Ghz, turbo 4.7, uses 65W. I've seen reports they can be overclocked to 5 GHz with air cooling. If I build one I'll use water cooling & see what I can get away with. -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/CACXcFm%3DOL5mE2o-cSPoGrgQS7f2N1%3DNA%2B4dVsbqQ6-CnD9NcAg%40mail.gmail.com.
