diff --git a/doc/CPU.md b/doc/CPU.md
index 7dd7a00b..ba662d2c 100644
--- a/doc/CPU.md
+++ b/doc/CPU.md
@@ -54,3 +54,7 @@ Example below demonstrate all primary ideas of flexible profiles configuration:
     }
 }
 ```
+
+### Intensity
+This option was known as `low_power_mode`, possible values is range from 1 to 5, for convinient if value 1 used, possible omit this option and specify CPU thread config by only one number: CPU affinity, instead of object.
+