On Tue, May 21, 2019 at 11:20 PM Lennart Sorensen <lsorense@csclub.uwaterloo.ca> wrote:
On Tue, May 21, 2019 at 10:13:22PM +0200, Dhaval Giani wrote:
This led me on chase, because Intel friends suggested what I said. I haven't looked too closely yet to see the difference between i3/i5/i7, but both i3/i5 do NOT have HT as per ark.intel. If i were to make a guess about the difference between i3/i5, I would go towards the turbo boost capability. But it is late where I am, and I am speaking early tomorrow morning :-), so I will look into it tomorrow, and probably ask a couple of Intel folks here.
There are only a few i3 models that have 4 actual cores. Almost all are 2 core with hyperthreading. The i5 on the other hand was almost always 4 cores (now 6 cores on the latest generation) without hyperthreading. There were a few low end models that were exceptions and were configured like the i3 with 2 cores and hyperthreading. So for the i3 hyperthreading was the norm and for the i5 hyperthreading was the exception.
https://en.wikipedia.org/wiki/List_of_Intel_Core_i3_microprocessors https://en.wikipedia.org/wiki/List_of_Intel_Core_i5_microprocessors
At the high end the i7 always had hyperthreading until the latest generation where some no longer do (the i9 does though). Apparently 8th gen i7 with 6 cores and hyperthreading is replaced by 9th gen i7 with 8 cores and no hyperthreading.
I am looking at https://ark.intel.com/content/www/us/en/ark/products/192990/intel-core-i9-99... -> Has SMT https://ark.intel.com/content/www/us/en/ark/products/191047/intel-core-i7-98... -> Has SMT https://ark.intel.com/content/www/us/en/ark/products/191051/intel-core-i5-96... -> Doesn't have SMT https://ark.intel.com/content/www/us/en/ark/products/191126/intel-core-i3-93... -> Doesn't have SMT (I just picked the first one in each list, so obviously I haven't looked deeper into it). Dhaval