Author: Xaltar
Subject: X99 Taichi Xeon Tjmax
Posted: 18 Feb 2017 at 3:04pm
Tjmax determines when the CPU will throttle or shut down due to heat as I am sure you know. If ASRock set it lower or higher than intel's default rating it is likely due to testing and study of the CPU's behavior on that particular BIOS version. Coded changes in the BIOS can drastically effect temps and performance, it is not uncommon for manufacturers to allow a cushion or buffer by lowering the Tjmax limit slightly, this goes a long way to protect your CPU from sudden spikes that could shoot the temps over the Tjmax limit and damage the CPU.
Edited by Xaltar - 45 minutes ago at 3:05pm
Subject: X99 Taichi Xeon Tjmax
Posted: 18 Feb 2017 at 3:04pm
Tjmax determines when the CPU will throttle or shut down due to heat as I am sure you know. If ASRock set it lower or higher than intel's default rating it is likely due to testing and study of the CPU's behavior on that particular BIOS version. Coded changes in the BIOS can drastically effect temps and performance, it is not uncommon for manufacturers to allow a cushion or buffer by lowering the Tjmax limit slightly, this goes a long way to protect your CPU from sudden spikes that could shoot the temps over the Tjmax limit and damage the CPU.
CPU temp changes have been a lot more abrupt since manufacturing processes have gotten smaller and dies more dense. Where in days of old we would see CPU temps rise say 20c over a few seconds we now see them spike from 30c to 90c almost instantly. The lower than rated Tjmax makes sense in this scenario.
Out of curiosity, why would you want to alter the Tjmax setting?
It would only be an issue if you are using inadequate cooling.
Edited by Xaltar - 45 minutes ago at 3:05pm