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MP 1,1-5,1 How to - downvolt a Radeon VII

J

joevt

macrumors 604
Jun 21, 2012
6,963
4,257
zachek said:
After I complete step i, Terminal spits out this message:

Code: 
/Library/Extensions/CustomPowerPlay.kext: resource fork, Finder information, or similar detritus not allowed
Click to expand...
Maybe the following command will show what's extra:
find ~/Downloads/CustomPowerPlay.kext -exec ls {} \; -exec xattr -l {} \;
But if it gets installed, then there shouldn't be a problem.
 
antonlinus

antonlinus

macrumors regular
Oct 10, 2019
100
16
antonlinus said:
ugh i was afraid of this answer. i guess i'll order the pixlas mod cables too then... fingers crossed.....
Click to expand...
i finally did the pixlas mod today and installed the VII again. completely stable performance now. fans almost idle for most use cases. HWAccel working smoothly. no shutdowns. OC Bootpicker showing everytime. 0 issues whatsoever. FINALLY!
 
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antonlinus

antonlinus

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Oct 10, 2019
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antonlinus said:
i finally did the pixlas mod today and installed the VII again. completely stable performance now. fans almost idle for most use cases. HWAccel working smoothly. no shutdowns. OC Bootpicker showing everytime. 0 issues whatsoever. FINALLY!
Click to expand...
Mhh today i tried to game a little bit on windows 10. i experienced multiple shutdowns again. After a shutdown AMD radeon software would pop up a message saying it changed something in wattman but seems like its not saving these changes or they aren’t good enough. I will try the same settings as @h9826790 in post #1 and see if this changes anything. Anyone else had issues with VII in Windows even after pixlas mod? Any other settings or drivers or so i need to know about? I haven’t used Windows in ages so really have 0 experience with manual drivers and stuff...
 
h9826790

h9826790

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antonlinus said:
Mhh today i tried to game a little bit on windows 10. i experienced multiple shutdowns again. After a shutdown AMD radeon software would pop up a message saying it changed something in wattman but seems like its not saving these changes or they aren’t good enough. I will try the same settings as @h9826790 in post #1 and see if this changes anything. Anyone else had issues with VII in Windows even after pixlas mod? Any other settings or drivers or so i need to know about? I haven’t used Windows in ages so really have 0 experience with manual drivers and stuff...
Click to expand...
Your Radeon VII is solely powered by Pixlas mod?
 
Norbert Mikołajczyk

Norbert Mikołajczyk

macrumors 6502
May 26, 2016
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antonlinus said:
Mhh today i tried to game a little bit on windows 10. i experienced multiple shutdowns again. After a shutdown AMD radeon software would pop up a message saying it changed something in wattman but seems like its not saving these changes or they aren’t good enough. I will try the same settings as @h9826790 in post #1 and see if this changes anything. Anyone else had issues with VII in Windows even after pixlas mod? Any other settings or drivers or so i need to know about? I haven’t used Windows in ages so really have 0 experience with manual drivers and stuff...
Click to expand...
I was playing RDR2 whole weekend at 1440p, no shutdowns, I power my VII with pixlas mod.
 
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antonlinus

antonlinus

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Oct 10, 2019
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h9826790 said:
Your Radeon VII is solely powered by Pixlas mod?
Click to expand...
yes solely by pixlas mod. i get 2x 8pin Cables from the pixlas mod and i don't need the mini 6pins at all. After adjusting the Voltage in Wattman to max 981mV like suggested by @h9826790 no more shutdowns so far...
I was playing GTA V in FullHD with 60fps. that really shouldn't stress anything too much...
 
h9826790

h9826790

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antonlinus said:
yes solely by pixlas mod. i get 2x 8pin Cables from the pixlas mod and i don't need the mini 6pins at all. After adjusting the Voltage in Wattman to max 981mV like suggested by @h9826790 no more shutdowns so far...
I was playing GTA V in FullHD with 60fps. that really shouldn't stress anything too much...
Click to expand...
That's a piece of cake for Radeon VII. I think you can go lower to 1740MHz @941mV, or even 1645MHz @901mV.

Most likely the game still perform the same, but the GPU can run at lower temperature, and further lower the fan speed.

Also, if possible, check the GPU temperature, and keep that below 100C. The Radeon VII can go 110°C, it's designed to do so. But that may still cause stability issue. Also, the GPU pull more when it's hot. So, if the GPU is hot, and the fan speed still low. Manually spin up the PCIe fan a bit. Or create a more aggressive fan profile to cool down the GPU is also preferable.
 
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Norbert Mikołajczyk

Norbert Mikołajczyk

macrumors 6502
May 26, 2016
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antonlinus said:
Did you limit max powerdraw of the VII with Wattman in Windows?
Click to expand...
Nope, actually it’s over clocked and stable in rdr2 long sessions. core 1027mv undervolted from 1087mv stock, +20% power and 1150mhz ram over clock. Working great and stable, anything under 1027mv core undervolt gives freezes after about 1 hour of play in rdr2.
I’m not sure if I should give it so much more juice +20% power?
Any downsides To the mod or psu heating up too much?
it doesn’t give any fps bump so maybe I should turn it off?
 
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h9826790

h9826790

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Norbert Mikołajczyk said:
Nope, actually it’s over clocked and stable in rdr2 long sessions. core 1027mv undervolted from 1087mv stock, +20% power and 1150mhz ram over clock. Working great and stable, anything under 1027mv core undervolt gives freezes after about 1 hour of play in rdr2.
I’m not sure if I should give it so much more juice +20% power?
Any downsides To the mod or psu heating up too much?
it doesn’t give any fps bump so maybe I should turn it off?
Click to expand...
That +20% is just what avail to the card. Not really what the card will draw.

After downvolt, keep that at +20% make perfect sense. Just to ensure the stability when the card really need it (most likely just for a very short period of time, if really happen).

I can’t see there is any excessive stress to the PSU, but you can always spin up the PSU fan to extend the PSU life span.

On the cMP, unless you run the game at very high resolution and very high settings, it can get into CPU limiting easily. IMO, if no FPS improvement, you can further reduce the GPU clock speed and voltage to reduce power draw, GPU temperature, and fan noise.
 
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Norbert Mikołajczyk

Norbert Mikołajczyk

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h9826790 said:
That +20% is just what avail to the card. Not really what the card will draw.

After downvolt, keep that at +20% make perfect sense. Just to ensure the stability when the card really need it (most likely just for a very short period of time, if really happen).

I can see there is any excessive stress to the PSU, but you can always spin up the PSU fan to extend the PSU life span.

On the cMP, unless you run the game at very high resolution and very high settings, it can get into CPU limiting easily. IMO, if no FPS improvement, you can further reduce the GPU clock speed and voltage to reduce power draw, GPU temperature, and fan noise.
Click to expand...
Yes, I believe it is CPU limiting factor but the VRAM overclock gave my nice ~+5% fps boost.
But overall that's great idea to check the performance while reducing GPU clock speed and voltage!
If the performance won't drop then there will be only benefits here :) thanks!
 
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h9826790

h9826790

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If VRAM helps, I think you are quite safe to try 1200MHz. So far, it seems all Radeon VII can do that without any difficulty.
 
h9826790

h9826790

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Just did some tests about 1645MHz @901mV (HMB2 @1100MHz). Suprisingly a nice setting to use. Still able to get 50000 in Luxmark. So, virtually no performance penalty (compare to the original factory setting).
1645MHz.png


But the power draw is significatly lower (than the numbers you can see in post #1, which is about 26A after downvolt, and 29A before downvolt).
Screenshot 2023-01-20 at 15.40.04.png
 
antonlinus

antonlinus

macrumors regular
Oct 10, 2019
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h9826790 said:
Just did some tests about 1645MHz @901mV (HMB2 @1100MHz). Suprisingly a nice setting to use. Still able to get 50000 in Luxmark. So, virtually no performance penalty (compare to the original factory setting).
View attachment 2145069

But the power draw is significatly lower (than the numbers you can see in post #1, which is about 26A after downvolt, and 29A before downvolt).
View attachment 2145070
Click to expand...
since i had problems with the old PowerPlayTable i'd like to give these changes a try!
how would ic have to change the base64 code in my OC config.plist to implement your changes correctly?

thanks a lot!
 
h9826790

h9826790

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This is the code for Radeon VII clock speed 1645MHz @901mV. You can put this into the device properties section. The code already included other parameters which should has the same effect as RadeonBoost (the Metal device will be ident as Radeon Pro Vega II. That's intentional, no need to worry about it).
Code: 
<key>DeviceProperties</key>
    <dict>
        <key>Add</key>
        <dict>
            <key>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)</key>
            <dict>
                <key>PP_PhmSoftPowerPlayTable</key>
                <data>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</data>
                <key>model</key>
                <string>AMD Radeon VII</string>
                <key>@0,name</key>
                <string>ATY,Donguil</string>
                <key>@1,name</key>
                <string>ATY,Donguil</string>
                <key>@2,name</key>
                <string>ATY,Donguil</string>
                <key>@3,name</key>
                <string>ATY,Donguil</string>
                <key>ATY,Copyright</key>
                <string>Copyright AMD Inc. All Rights Reserved. 2005-2020</string>
                <key>ATY,FamilyName</key>
                <string>Radeon Pro</string>
                <key>ATY,DeviceName</key>
                <string>Vega II</string>
                <key>ATY,EFIVersion</key>
                <string>01.01.186</string>
                <key>ATY,Rom#</key>
                <string>113-D160BW-444</string>
                <key>ATY,EFIVersionB</key>
                <string>113-D163A1XT-045</string>
                <key>ATY,EFIVersionROMB</key>
                <string>113-D163A1XT-045</string>
                <key>PP_DisableULV</key>
                <integer>0</integer>
            </dict>
        </dict>
        <key>Delete</key>
        <dict/>
    </dict>
This profile should be safe for testing, it should at least allow you to boot to desktop. So that even the card may crash under max stress, you should still able to recover. But you still better test 1645MHz @901mV in Windows first.

For your reference, the settings are as follow.
Max 1645MHz downclock from Excel V2.png
 
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S

shijan

macrumors newbie
Jun 29, 2010
21
1
Did anyone try CMMChris's additional settings posted on insanelymac https://www.insanelymac.com/forum/t...ii-powerplay-table-generator-oc-uv-fan-curve/ ? "They come from the Mac Pro 2019 Pro Vega II framebuffer and will increase your Geekbench scores significantly."
Are they compatible with h9826790's 1645MHz @901mV PowerPlayTable?

Code: 
<key>ATY,EFIVersion</key>
<data>MDEuMDAuMzE4MA==</data>
<key>CFG_NVV</key>
<integer>2</integer>
<key>CFG_PTPL2_CNT</key>
<integer>16</integer>
<key>CFG_PTPL2_MAX</key>
<integer>300</integer>
<key>CFG_PTPL2_MIN</key>
<integer>90</integer>
<key>CFG_TPS1S</key>
<integer>1</integer>
<key>PP_ACDCGpioDisabled</key>
<integer>0</integer>
<key>PP_DiDtSQPatternWidthOverride</key>
<integer>14</integer>
<key>PP_DiDtSQStallPatternOverride</key>
<integer>16383</integer>
<key>PP_DisableDIDT</key>
<integer>0</integer>
<key>PP_DisablePCCLimitControl</key>
<integer>1</integer>
<key>PP_FclkGfxClkRatio</key>
<integer>1036831949</integer>
<key>PP_PhmUseDummyBackEnd</key>
<integer>0</integer>
<key>PP_WorkLoadPolicyMask</key>
<integer>1</integer>
 
h9826790

h9826790

macrumors P6
Original poster
Apr 3, 2014
16,656
8,587
Hong Kong
shijan said:
Did anyone try CMMChris's additional settings posted on insanelymac https://www.insanelymac.com/forum/t...ii-powerplay-table-generator-oc-uv-fan-curve/ ? "They come from the Mac Pro 2019 Pro Vega II framebuffer and will increase your Geekbench scores significantly."
Are they compatible with h9826790's 1645MHz @901mV PowerPlayTable?

Code: 
<key>ATY,EFIVersion</key>
<data>MDEuMDAuMzE4MA==</data>
<key>CFG_NVV</key>
<integer>2</integer>
<key>CFG_PTPL2_CNT</key>
<integer>16</integer>
<key>CFG_PTPL2_MAX</key>
<integer>300</integer>
<key>CFG_PTPL2_MIN</key>
<integer>90</integer>
<key>CFG_TPS1S</key>
<integer>1</integer>
<key>PP_ACDCGpioDisabled</key>
<integer>0</integer>
<key>PP_DiDtSQPatternWidthOverride</key>
<integer>14</integer>
<key>PP_DiDtSQStallPatternOverride</key>
<integer>16383</integer>
<key>PP_DisableDIDT</key>
<integer>0</integer>
<key>PP_DisablePCCLimitControl</key>
<integer>1</integer>
<key>PP_FclkGfxClkRatio</key>
<integer>1036831949</integer>
<key>PP_PhmUseDummyBackEnd</key>
<integer>0</integer>
<key>PP_WorkLoadPolicyMask</key>
<integer>1</integer>
Click to expand...
Should be the same effect as my code in post #167
 
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