diff --git a/com.steampowered.SteamOSManager1.Manager.xml b/com.steampowered.SteamOSManager1.Manager.xml
index 437b22d..e7badba 100644
--- a/com.steampowered.SteamOSManager1.Manager.xml
+++ b/com.steampowered.SteamOSManager1.Manager.xml
@@ -138,27 +138,6 @@
     -->
     <property name="WifiBackend" type="u" access="readwrite"/>
 
-    <!--
-        GpuPowerProfiles:
-
-        Enumerate the supported GPU power profiles available on the system.
-
-        A list of supported profiles, as a dictionary of values to names.
-
-        Since: 9
-    -->
-    <property name="GpuPowerProfiles" type="a{us}" access="read"/>
-
-    <!--
-        GpuPowerProfile:
-
-        The current GPU power profile. Valid values come from GpuPowerProfiles
-        property.
-
-        Since: 9
-    -->
-    <property name="GpuPowerProfile" type="u" access="readwrite"/>
-
   </interface>
 
 </node>
diff --git a/src/bin/steamosctl.rs b/src/bin/steamosctl.rs
index eb05bd0..09df163 100644
--- a/src/bin/steamosctl.rs
+++ b/src/bin/steamosctl.rs
@@ -14,8 +14,8 @@ use steamos_manager::hardware::FanControlState;
 use steamos_manager::power::{CPUScalingGovernor, GPUPerformanceLevel, GPUPowerProfile};
 use steamos_manager::proxy::{
     AmbientLightSensor1Proxy, CpuScaling1Proxy, FactoryReset1Proxy, FanControl1Proxy,
-    HdmiCec1Proxy, Manager2Proxy, ManagerProxy, Storage1Proxy, UpdateBios1Proxy, UpdateDock1Proxy,
-    WifiPowerManagement1Proxy,
+    GpuPowerProfile1Proxy, HdmiCec1Proxy, Manager2Proxy, ManagerProxy, Storage1Proxy,
+    UpdateBios1Proxy, UpdateDock1Proxy, WifiPowerManagement1Proxy,
 };
 use steamos_manager::wifi::{WifiBackend, WifiDebugMode, WifiPowerManagement};
 use zbus::fdo::PropertiesProxy;
@@ -62,7 +62,7 @@ enum Commands {
     },
 
     /// Get the GPU power profiles supported on this device
-    GetGPUPowerProfiles,
+    GetAvailableGPUPowerProfiles,
 
     /// Get the current GPU power profile
     GetGPUPowerProfile,
@@ -250,17 +250,18 @@ async fn main() -> Result<()> {
                 .set_cpu_scaling_governor(governor.to_string().as_str())
                 .await?;
         }
-        Commands::GetGPUPowerProfiles => {
-            let profiles = proxy.gpu_power_profiles().await?;
+        Commands::GetAvailableGPUPowerProfiles => {
+            let proxy = GpuPowerProfile1Proxy::new(&conn).await?;
+            let profiles = proxy.available_gpu_power_profiles().await?;
             println!("Profiles:\n");
-            for key in profiles.keys().sorted() {
-                let name = &profiles[key];
-                println!("{key}: {name}");
+            for name in profiles.into_iter().sorted() {
+                println!("- {name}");
             }
         }
         Commands::GetGPUPowerProfile => {
+            let proxy = GpuPowerProfile1Proxy::new(&conn).await?;
             let profile = proxy.gpu_power_profile().await?;
-            let profile_type = GPUPowerProfile::try_from(profile);
+            let profile_type = GPUPowerProfile::try_from(profile.as_str());
             match profile_type {
                 Ok(t) => {
                     let name = t.to_string();
@@ -272,7 +273,10 @@ async fn main() -> Result<()> {
             }
         }
         Commands::SetGPUPowerProfile { profile } => {
-            proxy.set_gpu_power_profile(*profile as u32).await?;
+            let proxy = GpuPowerProfile1Proxy::new(&conn).await?;
+            proxy
+                .set_gpu_power_profile(profile.to_string().as_str())
+                .await?;
         }
         Commands::SetGPUPerformanceLevel { level } => {
             proxy.set_gpu_performance_level(*level as u32).await?;
diff --git a/src/manager/root.rs b/src/manager/root.rs
index 5498c1b..037d071 100644
--- a/src/manager/root.rs
+++ b/src/manager/root.rs
@@ -184,7 +184,7 @@ impl SteamOSManager {
             .await
     }
 
-    async fn set_gpu_power_profile(&self, value: u32) -> fdo::Result<()> {
+    async fn set_gpu_power_profile(&self, value: &str) -> fdo::Result<()> {
         let profile = GPUPowerProfile::try_from(value).map_err(to_zbus_fdo_error)?;
         set_gpu_power_profile(profile)
             .await
diff --git a/src/manager/user.rs b/src/manager/user.rs
index 7631357..b43fcfa 100644
--- a/src/manager/user.rs
+++ b/src/manager/user.rs
@@ -7,7 +7,6 @@
  */
 
 use anyhow::Result;
-use std::collections::HashMap;
 use tokio::sync::mpsc::{Sender, UnboundedSender};
 use tokio::sync::oneshot;
 use tracing::error;
@@ -22,9 +21,9 @@ use crate::error::{to_zbus_error, to_zbus_fdo_error, zbus_to_zbus_fdo};
 use crate::hardware::{check_support, HardwareCurrentlySupported};
 use crate::job::JobManagerCommand;
 use crate::power::{
-    get_available_cpu_scaling_governors, get_cpu_scaling_governor, get_gpu_clocks,
-    get_gpu_clocks_range, get_gpu_performance_level, get_gpu_power_profile, get_gpu_power_profiles,
-    get_tdp_limit,
+    get_available_cpu_scaling_governors, get_available_gpu_power_profiles,
+    get_cpu_scaling_governor, get_gpu_clocks, get_gpu_clocks_range, get_gpu_performance_level,
+    get_gpu_power_profile, get_tdp_limit,
 };
 use crate::wifi::{get_wifi_backend, get_wifi_power_management_state};
 use crate::API_VERSION;
@@ -111,6 +110,10 @@ struct FanControl1 {
     proxy: Proxy<'static>,
 }
 
+struct GpuPowerProfile1 {
+    proxy: Proxy<'static>,
+}
+
 struct HdmiCec1 {
     hdmi_cec: HdmiCecControl<'static>,
 }
@@ -157,30 +160,6 @@ impl SteamOSManager {
         API_VERSION
     }
 
-    #[zbus(property(emits_changed_signal = "false"))]
-    async fn gpu_power_profiles(&self) -> fdo::Result<HashMap<u32, String>> {
-        get_gpu_power_profiles().await.map_err(to_zbus_fdo_error)
-    }
-
-    #[zbus(property(emits_changed_signal = "false"))]
-    async fn gpu_power_profile(&self) -> fdo::Result<u32> {
-        match get_gpu_power_profile().await {
-            Ok(profile) => Ok(profile as u32),
-            Err(e) => {
-                error!("Error getting GPU power profile: {e}");
-                Err(to_zbus_fdo_error(e))
-            }
-        }
-    }
-
-    #[zbus(property)]
-    async fn set_gpu_power_profile(&self, profile: u32) -> zbus::Result<()> {
-        self.proxy
-            .call("SetGpuPowerProfile", &(profile))
-            .await
-            .map_err(to_zbus_error)
-    }
-
     #[zbus(property(emits_changed_signal = "false"))]
     async fn gpu_performance_level(&self) -> fdo::Result<u32> {
         match get_gpu_performance_level().await {
@@ -354,6 +333,38 @@ impl FanControl1 {
     }
 }
 
+#[interface(name = "com.steampowered.SteamOSManager1.GpuPowerProfile1")]
+impl GpuPowerProfile1 {
+    #[zbus(property(emits_changed_signal = "false"))]
+    async fn available_gpu_power_profiles(&self) -> fdo::Result<Vec<String>> {
+        let (_, names): (Vec<u32>, Vec<String>) = get_available_gpu_power_profiles()
+            .await
+            .map_err(to_zbus_fdo_error)?
+            .into_iter()
+            .unzip();
+        Ok(names)
+    }
+
+    #[zbus(property(emits_changed_signal = "false"))]
+    async fn gpu_power_profile(&self) -> fdo::Result<String> {
+        match get_gpu_power_profile().await {
+            Ok(profile) => Ok(profile.to_string()),
+            Err(e) => {
+                error!("Error getting GPU power profile: {e}");
+                Err(to_zbus_fdo_error(e))
+            }
+        }
+    }
+
+    #[zbus(property)]
+    async fn set_gpu_power_profile(&self, profile: &str) -> zbus::Result<()> {
+        self.proxy
+            .call("SetGpuPowerProfile", &(profile))
+            .await
+            .map_err(to_zbus_error)
+    }
+}
+
 impl HdmiCec1 {
     async fn new(connection: &Connection) -> Result<HdmiCec1> {
         let hdmi_cec = HdmiCecControl::new(connection).await?;
@@ -482,6 +493,9 @@ pub(crate) async fn create_interfaces(
     let fan_control = FanControl1 {
         proxy: proxy.clone(),
     };
+    let gpu_power_profile = GpuPowerProfile1 {
+        proxy: proxy.clone(),
+    };
     let hdmi_cec = HdmiCec1::new(&session).await?;
     let manager2 = Manager2 {
         proxy: proxy.clone(),
@@ -509,6 +523,7 @@ pub(crate) async fn create_interfaces(
     object_server.at(MANAGER_PATH, cpu_scaling).await?;
     object_server.at(MANAGER_PATH, factory_reset).await?;
     object_server.at(MANAGER_PATH, fan_control).await?;
+    object_server.at(MANAGER_PATH, gpu_power_profile).await?;
     object_server.at(MANAGER_PATH, hdmi_cec).await?;
     object_server.at(MANAGER_PATH, manager2).await?;
     object_server.at(MANAGER_PATH, storage).await?;
@@ -621,6 +636,15 @@ mod test {
             .unwrap());
     }
 
+    #[tokio::test]
+    async fn interface_matches_gpu_power_profile1() {
+        let test = start().await.expect("start");
+
+        assert!(test_interface_matches::<GpuPowerProfile1>(&test.connection)
+            .await
+            .unwrap());
+    }
+
     #[tokio::test]
     async fn interface_matches_hdmi_cec1() {
         let test = start().await.expect("start");
diff --git a/src/power.rs b/src/power.rs
index 747e514..11d4cd5 100644
--- a/src/power.rs
+++ b/src/power.rs
@@ -8,7 +8,6 @@
 use anyhow::{anyhow, bail, ensure, Result};
 use lazy_static::lazy_static;
 use regex::Regex;
-use std::collections::HashMap;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
 use strum::{Display, EnumString};
@@ -195,11 +194,11 @@ pub(crate) async fn get_gpu_power_profile() -> Result<GPUPowerProfile> {
     bail!("Unable to determine current GPU power profile");
 }
 
-pub(crate) async fn get_gpu_power_profiles() -> Result<HashMap<u32, String>> {
+pub(crate) async fn get_available_gpu_power_profiles() -> Result<Vec<(u32, String)>> {
     let contents = read_gpu_sysfs_contents(GPU_POWER_PROFILE_SUFFIX).await?;
     let deck = is_deck().await?;
 
-    let mut map = HashMap::new();
+    let mut map = Vec::new();
     let lines = contents.lines();
     for line in lines {
         let caps = GPU_POWER_PROFILE_REGEX.captures(line);
@@ -216,13 +215,13 @@ pub(crate) async fn get_gpu_power_profiles() -> Result<HashMap<u32, String>> {
             // the other profiles aren't correctly tuned for the hardware.
             if value == GPUPowerProfile::Capped as u32 || value == GPUPowerProfile::Uncapped as u32
             {
-                map.insert(value, name.to_string());
+                map.push((value, name.to_string()));
             } else {
                 // Got unsupported value, so don't include it
             }
         } else {
             // Do basic validation to ensure our enum is up to date?
-            map.insert(value, name.to_string());
+            map.push((value, name.to_string()));
         }
     }
     Ok(map)
@@ -774,10 +773,10 @@ CCLK_RANGE in Core0:
             .await
             .expect("fake_model");
 
-        let profiles = get_gpu_power_profiles().await.expect("get");
+        let profiles = get_available_gpu_power_profiles().await.expect("get");
         assert_eq!(
             profiles,
-            HashMap::from([
+            &[
                 (
                     GPUPowerProfile::FullScreen as u32,
                     String::from("3D_FULL_SCREEN")
@@ -788,20 +787,20 @@ CCLK_RANGE in Core0:
                 (GPUPowerProfile::Custom as u32, String::from("CUSTOM")),
                 (GPUPowerProfile::Capped as u32, String::from("CAPPED")),
                 (GPUPowerProfile::Uncapped as u32, String::from("UNCAPPED"))
-            ])
+            ]
         );
 
         fake_model(HardwareVariant::Jupiter)
             .await
             .expect("fake_model");
 
-        let profiles = get_gpu_power_profiles().await.expect("get");
+        let profiles = get_available_gpu_power_profiles().await.expect("get");
         assert_eq!(
             profiles,
-            HashMap::from([
+            &[
                 (GPUPowerProfile::Capped as u32, String::from("CAPPED")),
                 (GPUPowerProfile::Uncapped as u32, String::from("UNCAPPED"))
-            ])
+            ]
         );
     }
 
@@ -831,35 +830,35 @@ CCLK_RANGE in Core0:
             .await
             .expect("fake_model");
 
-        let profiles = get_gpu_power_profiles().await.expect("get");
+        let profiles = get_available_gpu_power_profiles().await.expect("get");
         assert_eq!(
             profiles,
-            HashMap::from([
-                (2, String::from("CGA")),
+            &[
                 (
                     GPUPowerProfile::FullScreen as u32,
                     String::from("3D_FULL_SCREEN")
                 ),
+                (2, String::from("CGA")),
                 (GPUPowerProfile::Video as u32, String::from("VIDEO")),
                 (GPUPowerProfile::VR as u32, String::from("VR")),
                 (GPUPowerProfile::Compute as u32, String::from("COMPUTE")),
                 (GPUPowerProfile::Custom as u32, String::from("CUSTOM")),
                 (GPUPowerProfile::Capped as u32, String::from("CAPPED")),
                 (GPUPowerProfile::Uncapped as u32, String::from("UNCAPPED"))
-            ])
+            ]
         );
 
         fake_model(HardwareVariant::Jupiter)
             .await
             .expect("fake_model");
 
-        let profiles = get_gpu_power_profiles().await.expect("get");
+        let profiles = get_available_gpu_power_profiles().await.expect("get");
         assert_eq!(
             profiles,
-            HashMap::from([
+            &[
                 (GPUPowerProfile::Capped as u32, String::from("CAPPED")),
                 (GPUPowerProfile::Uncapped as u32, String::from("UNCAPPED"))
-            ])
+            ]
         );
     }
 
diff --git a/src/proxy/manager.rs b/src/proxy/manager.rs
index 68b02f0..d6f22a7 100644
--- a/src/proxy/manager.rs
+++ b/src/proxy/manager.rs
@@ -28,16 +28,6 @@ trait Manager {
     #[zbus(property)]
     fn set_gpu_performance_level(&self, value: u32) -> zbus::Result<()>;
 
-    /// GpuPowerProfile property
-    #[zbus(property)]
-    fn gpu_power_profile(&self) -> zbus::Result<u32>;
-    #[zbus(property)]
-    fn set_gpu_power_profile(&self, value: u32) -> zbus::Result<()>;
-
-    /// GpuPowerProfiles property
-    #[zbus(property)]
-    fn gpu_power_profiles(&self) -> zbus::Result<std::collections::HashMap<u32, String>>;
-
     /// ManualGpuClock property
     #[zbus(property)]
     fn manual_gpu_clock(&self) -> zbus::Result<u32>;