Ryzen Master not Resetting to “Auto” Control Mode

Recently I set out to figure out how much clock speed I can squeeze out of my Zen+ based Ryzen 5 2600. To make life easier I figured I use Ryzen Master so I can change the settings while I’m in Windows so I don’t have to reboot every time I increase the clock speed. This has worked nicely until the point where I figured the viable maximum was. The next step was to dial those numbers "into hardware", meaning setting the options in the BIOS so that Ryzen Master is not required any more. And this is where my issues started to appear.

The Error

First, here’s a screenshot of the message Ryzen Master was giving me. After that I’ll explain what had happened.

In order to set the CPU multiplier you have to change from automatic to manual mode in Ryzen Master. I wanted to reset all options to their defaults after setting the overclock in the BIOS, but I always kept getting the message that Ryzen Master wants to restart Windows because the setting was changed to "Manual" – which it wasn’t, but more on that later. So I did as it asked multiple times with the same outcome every time. Effectively, I was doing a boot loop manually.

So, how did I get there?

The Journey

In brief:

  • Find a stable overclock in Windows using Ryzen Master.
  • Reboot to BIOS and set the overclock closer to the hardware.
  • Reboot to Windows and reset everything in Ryzen Master.
  • Manual "Boot Loop" a few times.
  • Notice CPU always at 4GHz, no more Cool’n’Quiet operation mode.
  • Undo overclock in BIOS.
  • Still see overclock in Windows.
  • Uninstalling Ryzen Master.
  • Still see overclock in Windows.
  • Ryzen Master still not resetting.
  • Manual "Boot Loop" a few more times.
  • Getting pissed and searching the Internet – apparantly I was not alone.
  • More reboots and tests with BIOS settings.

The Fix

It was the frickin’ BIOS! Ryzen Master was not to blame.

I have an ASRock B450 Gaming mITX mainboard with the latest non-Matisse (Ryzen 3000) BIOS. It is not recommended to upgrade unless a Ryzen 3000 is installed. There’s a weird bug in the BIOS that still applies the overclock even if the setting is set to "Auto by AMD CBS" (or something like that). There were two things that helped:

  1. Load BIOS defaults.
  2. Enable manual control and set the correct CPU base frequency at 3400MHz.

When applying the overclock with 4000MHz it effectly ran at 4GHz every time, even in idle. When setting 3400MHz it properly clocked down and also boosted as a R5 2600 should. The same setting only with a different clock value produced a different behavior. And unless the BIOS defaults are loaded the "Auto" mode doesn’t do what you expect – if you’ve set an overclock previously.

Curiously enough, booting Fedora Linux from an USB stick did properly scale the CPU frequency based on the load, even with the overclock applied. Apparently only Windows or AMD’s drivers didn’t manage to do that. Booting a Linux helped me to rule out Ryzen Master as the root of the always applied overclock although the BIOS setting was set to the default Auto mode.

The takeaways:

  • Don’t overclock on this mainboard.
    • The OC options for the CPU are laughable at best. No way to set the multiplier per core.
  • Next time buy a higher-end mainboard for overclocking (ITX is expensive though…).

NVIDIA GTX 970 vs GTX 1080

As mentioned in the Overclocking the Core i5 post a while back, my graphics card was limiting higher performance outputs, especially since it had to render games in 2560×1440. I hinted at an additional post dedicated to overclocking the GPU and this is it in some ways. I did overclock the GPU, but shortly after I also replaced it with a Gigabyte G1 Gaming GTX 1080. Nevertheless, for comparison, I will include the overclocked results based on the custom graphics settings from the last post and also compare it to the 1080 using default game presets. This way you can easily compare with your own rig. I had hoped I could also include Ryzen tests, but unfortunately Corsair’s AM4 mounting kit for the watercooler is still travelling around the world. So, there’ll be another performance related article (hopefully) soon. That one will compare the overclocked i5 with the GTX 1080 to a Ryzen 1700X with the 1080. Not only in games, but also in encoding.Read More »

Overclocking Intel Core i5 6600K to 4.2 GHz

The Skylake i5 is the 6th generation Core micro-architecture that has a lot of gaming power by default, especially the K series of CPUs. But, with only 4 cores and no hyper-threading, they are just not the right fit for some scenarios, especially video encoding. So, other than buying a new CPU (and board and maybe even RAM – as intriguing as it sounds), what can you do to get more performance? Overclock it! That’s what the K stands for, right? OverKlocK.Read More »