AMD Radeon software modifies CPU settings without the user permission.
A German website researched a possible anomaly involving AMD's Adrenalin GPU software. According to current speculation, the inclusion of AMD's Ryzen Master module in Adrenalin version 22.3.1 or later software has incorrectly allowed the application to change CPU PBO and Precision Boost parameters without the user's consent.
According on user input, the issue only occurs with AMD CPU and GPU combinations that support the Ryzen Master SDK. So, if you're running a system with an Intel CPU and a Radeon GPU, or a Ryzen CPU and an Nvidia GPU, you won't have this problem. For some reason, when applying GPU profiles – including the Default profile – AMD's Adrenalin software will automatically enable PBO or the "CPU OC" preset.
This condition can be inconvenient if you already have pre-configured CPU overclocking and undervolting settings in your motherboard's BIOS, but fortunately, the chip has built-in protective systems to avoid any serious physical injury. However, Adrenalin is said to be capable of overriding your settings with random ones, which may have an influence on CPU stability. Igor's Lab revealed that the AMD Adrenalin software, via the PBO settings, may adjust the power limitations and maximum boost frequency of the Ryzen CPU. It is uncertain if the instability is caused just by people manually altering CPU settings or if it occurs under default conditions as well.
Fortunately, there are several methods for restoring your CPU to its original state. One solution is to return to your motherboard's BIOS and re-enter all of your CPU settings (or disable PBO if you run default settings). You can also use Radeon Software Slimmer to remove the Ryzen Master SDK from the Adrenalin software, preventing the module from modifying any CPU parameters. Because Radeon Software Slimmer is a third-party tool, you should use it at your own risk. The simplest solution, however, comes from a Reddit user who describes how establishing a new tuning profile for your GPU within the Adrenalin program would completely prevent the module from changing PBO settings in your motherboard's BIOS. AMD hasn't given any information on the subject, so it's unclear why the Adrenalin program can change BIOS settings without user intervention.
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Senior Member
Posts: 17562
Joined: 2009-02-25
Ryzen Master SDK.
I'm on a 3900X so it doesn't really apply since the relevant changes are only for the 5000 series / Zen3 but it is one of the optional components I strip from the driver after it has been installed.
EDIT:
Installer Entries · GSDragoon/RadeonSoftwareSlimmer Wiki (github.com)
Should find the registry entry for it easily, change System from 1 to 0 and then just uninstall it.
GPU driver has no business affecting the CPU so this decision when this component was added is one I really dislike.
But at least the optional parts are easily removable, VR component I also remove and as I don't use it the overlay component also goes.
Ryzen Master SDK one shouldn't be included in the first place though, AMD Ryzen Master should be it's own software entirely, using Wattman should not apply a PBO2 override on restart for CPU behavior.
EDIT: If using Wattman with this component installed this behavior can also be changed in the Zen3 CPU created profile XMLs that are generated by saving the Wattman changes so that when loading the overclock profile it no longer adds the CPU changes but I just remove the component entirely instead, it has it's own dedicated software already, should be kept to that.
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Joined: 2005-05-04
so this is why some people like to have AMD CPU+GPU combo, so the driver can just overclock the CPU without them knowing any better

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Posts: 85
Joined: 2019-09-18
Correct me If i am wrong, but it is my understanding that this should be a rather serious security flaw if software can alter bios settings like that, unless it is intentional, in which case we could assume that AMD has just hacked everyone who installed their latest adrenaline software.
Maybe it is not straight up nefarious hack but it is one if it is changing settings without permission (anyone read the ToS? I don't know anyone that does). I wonder if this affects Laptop cpus as well (I happen to have a laptop with AMD Cpu and Gpu, but the power consumption is set by the Asus software. CPU has been running faster thou since that data is from memory, that is my memory not ram, probably not useful data).
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So just confirm this would not be applicable to a 3800x?
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Posts: 18934
Joined: 2008-08-28
How can a software change the bios settings?