diff --git a/homeassistant/components/cpuspeed/sensor.py b/homeassistant/components/cpuspeed/sensor.py
index 2c9db7e7300..6b64b8709a3 100644
--- a/homeassistant/components/cpuspeed/sensor.py
+++ b/homeassistant/components/cpuspeed/sensor.py
@@ -7,8 +7,11 @@ from homeassistant.components.sensor import SensorEntity
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import FREQUENCY_GIGAHERTZ
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
+from .const import DOMAIN
+
 ATTR_BRAND = "brand"
 ATTR_HZ = "ghz_advertised"
 ATTR_ARCH = "arch"
@@ -30,12 +33,16 @@ class CPUSpeedSensor(SensorEntity):
     """Representation of a CPU sensor."""
 
     _attr_icon = "mdi:pulse"
-    _attr_name = "CPU Speed"
+    _attr_has_entity_name = True
     _attr_native_unit_of_measurement = FREQUENCY_GIGAHERTZ
 
     def __init__(self, entry: ConfigEntry) -> None:
         """Initialize the CPU sensor."""
         self._attr_unique_id = entry.entry_id
+        self._attr_device_info = DeviceInfo(
+            name="CPU Speed",
+            identifiers={(DOMAIN, entry.entry_id)},
+        )
 
     def update(self) -> None:
         """Get the latest data and updates the state."""
diff --git a/tests/components/cpuspeed/test_sensor.py b/tests/components/cpuspeed/test_sensor.py
index ebf9f0111bd..068d24b6f3c 100644
--- a/tests/components/cpuspeed/test_sensor.py
+++ b/tests/components/cpuspeed/test_sensor.py
@@ -2,6 +2,7 @@
 
 from unittest.mock import MagicMock
 
+from homeassistant.components.cpuspeed.const import DOMAIN
 from homeassistant.components.cpuspeed.sensor import ATTR_ARCH, ATTR_BRAND, ATTR_HZ
 from homeassistant.components.homeassistant import (
     DOMAIN as HOME_ASSISTANT_DOMAIN,
@@ -15,7 +16,7 @@ from homeassistant.const import (
     STATE_UNKNOWN,
 )
 from homeassistant.core import HomeAssistant
-from homeassistant.helpers import entity_registry as er
+from homeassistant.helpers import device_registry as dr, entity_registry as er
 from homeassistant.setup import async_setup_component
 
 from tests.common import MockConfigEntry
@@ -29,6 +30,7 @@ async def test_sensor(
     """Test the CPU Speed sensor."""
     await async_setup_component(hass, "homeassistant", {})
     entity_registry = er.async_get(hass)
+    device_registry = dr.async_get(hass)
 
     entry = entity_registry.async_get("sensor.cpu_speed")
     assert entry
@@ -62,6 +64,12 @@ async def test_sensor(
     assert state.attributes.get(ATTR_BRAND) == "Intel Ryzen 7"
     assert state.attributes.get(ATTR_HZ) == 3.6
 
+    assert entry.device_id
+    device_entry = device_registry.async_get(entry.device_id)
+    assert device_entry
+    assert device_entry.identifiers == {(DOMAIN, entry.config_entry_id)}
+    assert device_entry.name == "CPU Speed"
+
 
 async def test_sensor_partial_info(
     hass: HomeAssistant,