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How to enable eco mode on Asrock 670E Taichi£

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: http://forum.asrock.com/forum_posts.asp?TID=26167
Printed Date: 28 Feb 2024 at 7:58pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: How to enable eco mode on Asrock 670E Taichi£
Posted By: shmerl
Subject: How to enable eco mode on Asrock 670E Taichi£
Date Posted: 17 Jul 2023 at 2:22pm
I have AMD Ryzen 9 7950X with Asrock 670E Taichi. Supposedly there is a way to use the 105 W eco mode for the processor, but I couldn't find such option. How can it be enabled?



Replies:
Posted By: shmerl
Date Posted: 17 Jul 2023 at 2:51pm
I found a suggestion to manually set PBO limits like this:

PPT Limit: 142000
TDC Limit: 110000
EDC Limit: 170000

This matches what Gamers Nexus video described for 105 W eco mode. I'll give it a try, but it would be nice to have a simple preset like that in the UEFI.


Posted By: shmerl
Date Posted: 20 Jul 2023 at 11:39am
If anyone needs, I found it after exploring various options. It's in:

Advanced > AMD CBS > SMU Common Options > Eco Mode.


Posted By: M440
Date Posted: 20 Jul 2023 at 2:44pm
Originally posted by shmerl shmerl wrote:

If anyone needs, I found it after exploring various options. It's in:

Advanced > AMD CBS > SMU Common Options > Eco Mode.


you can see the option PPT Limit is in [mW] so setting it to 105000 is 105watt limit


Posted By: shmerl
Date Posted: 20 Jul 2023 at 11:25pm
I think that's incorrect. That 105 is not equal to PPT limit. See Gamers Nexus video about eco mode, they show the table for it.


Posted By: M440
Date Posted: 21 Jul 2023 at 12:40am
Originally posted by shmerl shmerl wrote:

I think that's incorrect. That 105 is not equal to PPT limit. See Gamers Nexus video about eco mode, they show the table for it.


is it in [mW] miliwatt units? if it's in miliwatts than it is a wattage limit.


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asrock b650m/hdv.m2, ryzen 7700x@85watt


Posted By: shmerl
Date Posted: 21 Jul 2023 at 10:14am
The actual ppt is in milliwatts, yes. But that's not equal eco modes like 105 W * 1000 or 65 W * 1000. That's what I'm saying.

Like PPT for 105 W eco mode for example is 142000 mW.


Posted By: shmerl
Date Posted: 21 Jul 2023 at 10:15am
That's because those 105 and 65 are not realistic values of power, but some weird formulas. See that video by Gamers Nexus if you want more details.


Posted By: shmerl
Date Posted: 21 Jul 2023 at 10:20am
Also, if you are setting it manually, setting PPT alone is not enough. You also need to set TDC and EDC.

I think that single toggle I found in the later post simply sets all 3 to those defined values I posted above.


Posted By: M440
Date Posted: 21 Jul 2023 at 3:19pm
PPT - power package tracking - [miliwatt]

you can track it after you set it in hwinfo - CPU PTT [W] field

you can leave the other settings at 0,

i'm not watching no video

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asrock b650m/hdv.m2, ryzen 7700x@85watt


Posted By: shmerl
Date Posted: 22 Jul 2023 at 2:35am
Sure, don't watch it. But what you said above about 105000 mW PPT being equal to 105 W eco mode is just incorrect. And you still have to set all 3 values. Putting it here so others won't be confused by what you said and do it wrong.


Posted By: shmerl
Date Posted: 22 Jul 2023 at 2:36am
I mean set all 3 values if you do it manually. As above, there is a single menu switch as well for eco modes.


Posted By: M440
Date Posted: 22 Jul 2023 at 4:01am
Originally posted by shmerl shmerl wrote:

Sure, don't watch it. But what you said above about 105000 mW PPT being equal to 105 W eco mode is just incorrect.


i don't understand.

Quote And you still have to set all 3 values. Putting it here so others won't be confused by what you said and do it wrong.


no you don't have to set this, because you are already limiting the cpu by the factor which is important to you PTT (watt)


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asrock b650m/hdv.m2, ryzen 7700x@85watt


Posted By: shmerl
Date Posted: 23 Jul 2023 at 11:43am
I seriously don't want to waste time on pointless arguments. Those who want details will watch the video by Gamers Nexus on eco mode for Zen 4. Those who don't want to watch will make uneducated mistakes.


Posted By: M440
Date Posted: 23 Jul 2023 at 6:32pm
Originally posted by shmerl shmerl wrote:

I seriously don't want to waste time on pointless arguments. Those who want details will watch the video by Gamers Nexus on eco mode for Zen 4. Those who don't want to watch will make uneducated mistakes.


power is voltage multiplied by current [w]=[v]*[a]

cpu has a table of a voltage it uses for a certain frequency (we can adjust this by editing voltage "curve optimizer"). We have wattage and voltage known, so we also know the amperage.

we clearly see this proven in practice that PTT is the only limit reached and there is no point in setting the other two

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asrock b650m/hdv.m2, ryzen 7700x@85watt



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