Adjust voltage settings for SoC optimization on the Gigabyte Aorus Master B650-E using PBO.
Adjust voltage settings for SoC optimization on the Gigabyte Aorus Master B650-E using PBO.
Hey everyone, I'm seeking advice on what I should set my SoC voltage to while trying to undervolt my AMD Ryzen 7800X3D using AMD Precision Boost Overdrive (PBO). Here's my setup: Motherboard: Gigabyte Aorus Master B650-E RAM: Corsair Titanium CL30 6000MHz (XMP, not AMD EXPO certified) CPU: AMD Ryzen 7800X3D My goal is to undervolt my CPU using per-core settings with AMD PBO. Here are the steps I've taken so far: 1. Disabled PBO directly in the BIOS to start with the stock settings for the CPU. 2. SoC Voltage on Auto: I initially set the SoC voltage to auto, which resulted in 1.284V in HWInfo. After checking some Reddit posts, I noticed that 1.284V seemed high. According to AMD's website, 1.3V is the maximum, and I’m not exceeding that. 3. Manual SoC Voltage: I experimented with manual SoC voltages, ranging from 1.0V to 1.2V. The only stable manual voltage was 1.2V, although the auto setting was mostly stable, except for occasional crashes. 4. Stress Testing: I used Y-cruncher for CPU testing. I noticed that my temperatures are within safe limits and not thermal throttling. However, when I try a voltage around 1V or a little higher my PC crashes, and I get a blue screen. If I go higher, Y-cruncher crashes, citing core errors. Ultimately, I want my CPU to function as close to stock settings as possible while using per-core undervolting with PBO. However, I need to find a stable SoC voltage setting first. Any recommendations or tips on what I should set my SoC voltage to for stability while using PBO for per-core undervolting? I'm especially curious if others have found specific voltages to work best for similar setups or if there are additional steps I should take. Thanks in advance for any help!
It looks like you're questioning the effort involved and suggesting simpler adjustments. Just tweak the core offset to -25 or -30 and finish. Or enable Eco mode if available. Unless you're working on extreme cooling for record attempts, I don't see much value in changing SOC voltage or using limited eco settings. Are your BIOS up to date?
Your profile is current, so simply enable XMP without worrying about EXPO. Use the default settings and apply a -30 pBOO. Stress tests such as Y-cruncher are useful for checking performance but don’t need to be overly concerned if they fail.
I recommend purchasing EXPO RAM instead of XMP, ensuring it matches your motherboard's QVL. For optimal compatibility and stability, stick with the defaults and fine-tune PBO to -25 or -30, whichever gives the best results. If you need to drop to -20, that’s fine too. Y cruncher is just one of several tools for stability checks—don’t rely solely on it, as it has its own quirks (like Look-up Buildzoid and his struggles with 12th-14th gen). Personally, I don’t use Y cruncher in my testing; I prefer XMP/Expo and focus more on stability. If clients want to experiment independently, that’s okay.
You can get a refund on your RAM, and I suggest checking the recommended options. For stability testing, avoid games with frequent FPS drops—stick to more stable titles. Thanks for your question!
What hardware are you using? I don't think the CPU or RAM should cause FPS drops under normal conditions. It's probably a GPU problem or an issue with the game settings.
Prime95 "small fts" refers to a specific variant of the Prime95 tool used for testing CPU performance.