Download: AMD chipset driver revision 1.9.27.1033

#5715662 Posted on: 09/30/2019 10:28 AM

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With my 2700x i've been using windows balanced until now! so now is better to use ryzen balanced?

#5715835 Posted on: 09/30/2019 07:42 PM

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If you've not had problems with it, keep using it. I think that Ryzen Balanced is targeted more towards the 3000 series (correct me if I'm wrong).

#5715843 Posted on: 09/30/2019 07:57 PM

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It you are running an update version of Windows 10, then it is needed only for Zen2 arch CPU based. It should not be automatically installed on older versions (Zen and Zen+).

#5716221 Posted on: 10/01/2019 07:39 PM

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Its not needed at all. Only if you like your cpu to be ultra responsive, as they just change min cpu perf to 99%,
thus preventing win to lower clocks on idle.
If your gaming, just set min to 15-25% and max to 100, and your good.
I usually run power saving profile and keep the performance "locked" to 50% (max, and the cpu staying ar 2.2 ghz) i have yet to see any issues, and im even playing games like that (ace combat 7 and others).

But i think they messed up with this driver..
Forgot i had also updated bios. Seems the lower ST clock doesnt stem from the driver, as reverting back didnt change it.

#5716302 Posted on: 10/02/2019 01:57 AM

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That's not exactly how Ryzen works...

100% is considered the "base" frequency, and 99% is on the "edge" of that frequency, which prevents the low-power C-state from engaging while still keeping power management "on" (100% turns it off completely).
Windows does a software evaluation of load every 15 ms when ratio is below 99%, to determine which C-state to send to the CPU.

The thing is... Ryzen has hardware evaluation of load, which is done every 1 ms (1000 times per second).
So, if the power management is On but Windows doesn't send C-state changes, the CPU instead takes over and changes internal frequency up and down 1000 times per second. This can not even be seen in Windows at all, and all 3rd party monitoring tools which rely on Windows Power API will just see the base frequency unchanged.
In reality the CPU can go very low, even under 200 Mhz, and consume very little power, in the order of just a few milliwatts per core !
And it does that for each core individually, while C-states apply to the entire CPU.

Only Ryzen Master can read this info, as it communicates directly with the CPU's internal registers instead of relying on Windows Power API (and it calculates an average/max clock/frequency).
Don't even bother running some software like CPU-z or Coretemp or HWinfo, it will not show the CPU downclocking below base frequency when running in hardware power management mode.

I strongly recommend leaving that one to 99% and not bothering to change it, as you only harm your computer performance and power efficiency for no reason.
Let the "hardware accelerated" power management (called SenseMI) do it's thing.
https://www.amd.com/en/technologies/sense-mi

The same hardware logic inside the CPU does the boost as well, to whatever AGESA microcode is telling it to do.
It's literally a mini-computer inside the CPU running it's own internal real time operating system and software (with instructions only AMD knows .. probably some form of RISC).

I presume Microsoft is working with AMD to integrate communicating with this thing into the OS itself, but it will probably be a while...