diff --git a/ansible/roles/cpu/files/cpu_set_perf_perc_linux_amd b/ansible/roles/cpu/files/cpu_set_perf_perc_linux_amd
new file mode 100644
index 0000000..1b38de7
--- /dev/null
+++ b/ansible/roles/cpu/files/cpu_set_perf_perc_linux_amd
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+#
+# Tell hardware p-states whether to maximize CPU performance (100) or
+# energy efficiency (0).
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+perc=$1
+
+if [ "$perc" -gt 80 ]; then
+    echo performance | tee /sys/firmware/acpi/platform_profile
+elif [ "$perc" -ge 20 ]; then
+    echo balanced | tee /sys/firmware/acpi/platform_profile
+else
+    echo low-power | tee /sys/firmware/acpi/platform_profile
+fi
+
+if [ "$perc" -ge 80 ]; then
+    echo "performance" | tee /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
+elif [ "$perc" -ge 60 ]; then
+    echo "balance_performance" | tee /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
+elif [ "$perc" -ge 40 ]; then
+    echo "default" | tee /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
+elif [ "$perc" -ge 20 ]; then
+    echo "balance_power" | tee /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
+else
+    echo "power" | tee /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference
+fi
diff --git a/ansible/roles/cpu/files/cpu_set_perf_perc_linux b/ansible/roles/cpu/files/cpu_set_perf_perc_linux_intel
similarity index 100%
rename from ansible/roles/cpu/files/cpu_set_perf_perc_linux
rename to ansible/roles/cpu/files/cpu_set_perf_perc_linux_intel
diff --git a/ansible/roles/cpu/files/platform_profile_tmpfiles.conf b/ansible/roles/cpu/files/platform_profile_tmpfiles.conf
new file mode 100644
index 0000000..326a808
--- /dev/null
+++ b/ansible/roles/cpu/files/platform_profile_tmpfiles.conf
@@ -0,0 +1,2 @@
+# Favor energy efficiency for platform profile (EC / system, not CPU)
+w- /sys/firmware/acpi/platform_profile - - - - low-power
diff --git a/ansible/roles/cpu/tasks/linux_amd.yaml b/ansible/roles/cpu/tasks/linux_amd.yaml
index b521f5a..5305a6a 100644
--- a/ansible/roles/cpu/tasks/linux_amd.yaml
+++ b/ansible/roles/cpu/tasks/linux_amd.yaml
@@ -3,3 +3,38 @@
     name:
       - powertop
     state: present
+
+- name: Favor energy efficiency for hardware p-states
+  when: hwpstate is defined and hwpstate and cores is defined
+  template:
+    src: "templates/{{ item.src }}.j2"
+    dest: "{{ item.dest }}"
+    mode: 0644
+    owner: root
+    group: wheel
+  loop:
+    - src: energy_performance_preference.conf
+      dest: /etc/tmpfiles.d/energy_performance_preference.conf
+
+- name: Install tmpfiles.d configuration
+  when: hwpstate is defined and hwpstate and cores is defined
+  copy:
+    src: "files/{{ item }}_tmpfiles.conf"
+    dest: "/etc/tmpfiles.d/{{ item }}.conf"
+    mode: 0644
+    owner: root
+    group: wheel
+  loop:
+    - platform_profile
+
+- name: Install scripts
+  when: hwpstate is defined and hwpstate
+  copy:
+    src: "files/{{ item.src }}"
+    dest: "{{ item.dest }}"
+    mode: 0755
+    owner: root
+    group: wheel
+  loop:
+    - src: cpu_set_perf_perc_linux_amd
+      dest: /usr/local/bin/cpu_set_perf_perc
diff --git a/ansible/roles/cpu/tasks/linux_intel.yaml b/ansible/roles/cpu/tasks/linux_intel.yaml
index f49196c..03ec383 100644
--- a/ansible/roles/cpu/tasks/linux_intel.yaml
+++ b/ansible/roles/cpu/tasks/linux_intel.yaml
@@ -19,7 +19,7 @@
   template:
     src: "templates/{{ item.src }}.j2"
     dest: "{{ item.dest }}"
-    mode: 0755
+    mode: 0644
     owner: root
     group: wheel
   loop:
@@ -35,5 +35,5 @@
     owner: root
     group: wheel
   loop:
-    - src: cpu_set_perf_perc_linux
+    - src: cpu_set_perf_perc_linux_intel
       dest: /usr/local/bin/cpu_set_perf_perc
diff --git a/ansible/roles/cpu/templates/energy_performance_preference.conf.j2 b/ansible/roles/cpu/templates/energy_performance_preference.conf.j2
index b5a4239..bb97375 100644
--- a/ansible/roles/cpu/templates/energy_performance_preference.conf.j2
+++ b/ansible/roles/cpu/templates/energy_performance_preference.conf.j2
@@ -1,4 +1,4 @@
-# Favor energy efficiency for Speed Shift
+# Favor energy efficiency for hardware p-states
 {% for core in range(0, cores, 1) %}
 w- /sys/devices/system/cpu/cpufreq/policy{{core}}/energy_performance_preference - - - - power
 {% endfor %}