# Homey Pro 2023 CPU Speed Actual vs Advertised **URL:** \ **Category:** Questions & Help\ **Tags:** homey-pro-2023\ **Created:** [October 15, 2024, 11:15am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208 "2024-10-15T11:15:34Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [October 15, 2024, 11:15am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/1 "2024-10-15T11:15:34Z")
Since three months I have a Homey Pro Early 2023 model. I am using it in combination with the official Homey LAN/ethernet adapter and original power cord/plug. I am struggling to understand the difference in CPU speed that my Homey runs at vs. the advertised speed on the Homey website. Based on the website, the (max.) CPU speed should be 1.8 Ghz: ![IMG_1556](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/f/1fad0333efe381838e91ce8d3146af97b97907ee.jpeg) However my Homey typically hovers beween 900 and 1500 Mhz, but never higher (I checked both Homey’s Insights, the sysInternals app and the reported speed on the Homey Developer Tools page). As far as I can see the temperatures of my Homey are ok and all the ‘throttling’ and ‘undervoltage’ properties reported on the Homey Developer Tools page are reported as ‘false’ (which if reported as ‘true’, I understand could be an indication of an icorrect power plug): ![Homey CPU Speed & Temp](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/a/4a0a0630ddcd89eb314b0b3447aaaf0f2cd08aad.png) ![Homey Trottle Info](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/2/62bf22204c39a5bc2efbc83a440a07011c5dc95c.png) How should I interpret this difference? Is it normal that Homey runs at max 1500 Mhz? I hope someone can explain it to me. Thanks. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [October 15, 2024, 11:25am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/2 "2024-10-15T11:25:17Z")
Your Homey has (literally) nothing better to do 🤷🏼‍♂️ Also, Insights aggressively averages older values, so if your Homey runs on 1.5Ghz most of the time it will average out around that speed, even though there might have been higher peaks. ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [October 15, 2024, 11:55am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/3 "2024-10-15T11:55:08Z")
> [@SunBeech](#): > > I am struggling to understand the difference in CPU speed that my Homey runs at vs. the advertized speed on the Homey website. Your Raspberry CM4 CPU can run up to 1.8GHz but to save power, decrease temperature, when idling, it’s lowering it’s frequency based on given CPU Scheduler (OnDemand). Rest is as Robert described. ---
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [October 15, 2024, 12:16pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/4 "2024-10-15T12:16:31Z")
That makes sense. Though the [CM4 datasheet](https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf) also indicates that the CPU speed is 1.5Ghz instead of 1.8Ghz: ![IMG_1552](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/8/2/826de47719ad306fe268768831360a618586b93b.jpeg) ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [October 15, 2024, 12:20pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/5 "2024-10-15T12:20:28Z")
> [@SunBeech](#): > > Though the [CM4 datasheet](https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf) also indicates that the CPU speed is 1.5Ghz instead of 1.8Ghz: Interesting… 🤔 ---
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [October 15, 2024, 12:58pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/6 "2024-10-15T12:58:14Z")
Indeed. I’ll ask Athom for a clarification. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [October 15, 2024, 12:59pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/7 "2024-10-15T12:59:37Z")
I also asked on Slack 👍🏻 ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [October 15, 2024, 1:06pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/8 "2024-10-15T13:06:06Z")
That datasheet is from 2023, Wiki states for RPI 4 (not CM4) that two CPU revisions exists : _Quad-core [ARM Cortex-A72](https://en.wikipedia.org/wiki/ARM_Cortex-A72) @ 1.5 GHz (B0 Revision)_ _/ 1.8 GHz (C0 Revision)_ I wonder if someone confused this info… my CM4 is running on 1.5 GHz as well Anyone with fresh/new Homey 2023, who can confirm his CPU frequency ? ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [October 15, 2024, 1:13pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/9 "2024-10-15T13:13:58Z")
This is what mine says (old(er) model): ```auto Model: Raspberry Pi Compute Module 4 Rev 1.0 Model name: Cortex-A72 Stepping: r0p3 CPU max MHz: 1500.0000 CPU min MHz: 600.0000 ``` But the [CM4 web page](https://www.raspberrypi.com/products/compute-module-4/) doesn’t mention that it comes in different revisions, just the 1.5Ghz one: > Broadcom BCM2711 quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz) With a link to the aforementioned data sheet, which I assume is current. This is what the introduction e-mail said about the new HP (back in October 2022): ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/5/f5743637e2080ad3f6cf587a2213d5e30213f2f7.jpeg) ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [October 15, 2024, 1:19pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/10 "2024-10-15T13:19:24Z")
Yep, I guess so. Seems while Raspberry equip RPI4 better CPU on latest revisions, they kept CM4 running on old CPU (I physically checked one of CM4 ordered this year and it’s B3 version) ---
**Author:** ![Robin\_De\_Lange](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robin_de_lange/32/25173_2.png) [@Robin\_De\_Lange](https://community.homey.app/u/Robin_De_Lange)\ **Post date:** [October 15, 2024, 7:51pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/11 "2024-10-15T19:51:59Z")
I replaced mine with an 8gb ram version and I have also 1.5Ghz ---
**Author:** ![Heff](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heff/32/14652_2.png) [@Heff](https://community.homey.app/u/Heff)\ **Post date:** [October 16, 2024, 8:16pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/12 "2024-10-16T20:16:27Z")
I had ordered mine this year and i have also 1.5 GHz. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [October 17, 2024, 5:31am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/13 "2024-10-17T05:31:03Z")
Slack is suspiciously silent on this matter (as opposed to dashboard-related items…). ---
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [October 23, 2024, 7:30pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/14 "2024-10-23T19:30:05Z")
Same for Athom’s support desk. Still awaiting their response. ![IMG_1573](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/9/19a1551884cc649da07de0c9e797ee589ec75382.jpeg) I did note that the 1.8Ghz spec is also part of their keynote/announcement videos for the Homey Pro 2023 on YouTube and also mentioned in the specifications on the websites of Homey resellers. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [October 24, 2024, 5:18am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/15 "2024-10-24T05:18:41Z")
I asked Tweakers to update their database entry for Homey Pro, which also stated a 1.8Ghz speed. It was updated within a few hours. ---
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [November 1, 2024, 2:19pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/16 "2024-11-01T14:19:37Z")
I got word back from Athom. In short: the 1.8 GHz spec is the maximum capability of the processor. Hence that is the number advertised. However, they decided to cap the speed at 1.5 GHz for temperature, power consumption and longevity reasons based on their own tests and recommendations from Raspberry Pi. Athom indicated that they are going to update their website to the 1.5 GHz spec. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [November 1, 2024, 3:46pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/17 "2024-11-01T15:46:52Z")
> [@SunBeech](#): > > In short: the 1.8 GHz spec is the maximum capability of the processor. Hence that is the number advertised. > > However, they decided to cap the speed at 1.5 GHz for temperature, power consumption and longevity reasons based on their own tests and recommendations from Raspberry Pi. Sorry, but this smells like BS. Raspberry Pi’s own documentation doesn’t state anywhere that the CM4 comes in a 1.8Ghz variant, only 1.5Ghz. And even if Homey would have a completely custom chip (which wouldn’t make sense, because why have a custom chip that you then have to underclock to “normal CM4 speeds”?), nothing points to it being speed-limited (which, on RPi, you configure in `/boot/config.txt` using `arm_freq`, which Homey doesn’t do). ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [November 1, 2024, 3:48pm UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/18 "2024-11-01T15:48:13Z")
> [@SunBeech](#): > > However, they decided to cap the speed at 1.5 GHz for temperature, power consumption and longevity reasons based on their own tests and recommendations from Raspberry Pi. Thanks for sharing. Frankly, it’s not their decision but the Raspberry max. CPU speed set by the Vendor and I’m not really sure they can “just” update their website 😉 Anyway, I played little bit around as I do have active cooling and… ![1800GHz](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/7/a7905a32f91936f6831bf72f8b6ee17fec32a559.jpeg) The CPU temp increased by aprox. 5C during peaks. ---
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [November 7, 2024, 6:08am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/19 "2024-11-07T06:08:45Z")
> [@robertklep](#): > > Raspberry Pi’s own documentation doesn’t state anywhere that the CM4 comes in a 1.8Ghz variant, only 1.5Ghz. Yes, that does not seem logical. I raised a follow-up question to Athom. Let’s see what their response is. ---
**Author:** ![SunBeech](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sunbeech/32/111391_2.png) [@SunBeech](https://community.homey.app/u/SunBeech)\ **Post date:** [November 7, 2024, 6:12am UTC](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208/20 "2024-11-07T06:12:22Z")
> [@Sharkys](#): > > Anyway, I played little bit around as I do have active cooling and… Looking at your screenshot: you were able to let Homey’s CPU run at 1.8 GHz? I assume you made/forced some changes under the hood, as this does not seem to be an option in the normal end user UI. [Next page](https://community.homey.app/t/homey-pro-2023-cpu-speed-actual-vs-advertised/118208.md?page=2)