4 ms·
There's significant downclocking only on on Skylake-X (aka: 1st generation teething problems). On more recent cores, there's only ~100 MHz of downclocking, whi
by dragontamer 5y ago
There's significant downclocking only on on Skylake-X (aka: 1st generation teething problems).
On more recent cores, there's only ~100 MHz of downclocking, which is so small you can pretty much ignore it.
- jeffbee 5y agoIt's amazing how sticky the myth has become, though. On Ice Lake Xeon there is basically no penalty for using the AVX-512 unit.
- dragontamer 5y agoIt was true for several years, because Intel got "stuck" on Skylake due to issues in their manufacturing. If Intel was able to get Icelake out on time, it may have reduced the "stickiness" of the myth.
- jeffbee 5y agoTrue. But the power penalty from 512 was already quite reduced in Cannon Lake (2018) and completely gone in Tiger Lake (2020).