Is the 1.525V VDDCR Voltage TPU II secure in this situation?
Is the 1.525V VDDCR Voltage TPU II secure in this situation?
Hello, I'm experiencing a problem where Aida reports a "SYSTEM FAILURE" during an FPU stress test. The VDDCR voltage is set at 1.525 by auto, and the VDDCR SOC is 1.1375V (see screenshot here). Some users suggest keeping it above 1.4V to avoid issues, but my motherboard automatically set it to 1.4V, which caused a BSOD during a stress test. Without TPU II, my CPU, cache, FPU, and memory handled the test without problems. Since February, I've been running at 4GhZ with TPU II, and I'm unsure if this voltage is safe for long-term use or if it affects CPU lifespan. The highest temperatures I recorded in summer were around 75°C, and current game temps are between 55-65°C. At idle, it's about 33-44°C. My setup includes Windows 10 Pro, a Ryzen 1600X on 4.0 GHz with TPU II, ASUS ROG STRIX B350 motherboard, Gigabyte Windforce GTX950, HyperX Predator RAM, WD 1TB SSD, and an Aerocool VX-750W PSU in a PHANTEKS P400 case.
CountMike replies that it's not suitable at around 1.5v and the processor would likely reach its maximum before then. He asks which cooler you have.
CountMike replied with a clear response, noting the issue isn't close to 1.5v and suggesting the processor would fail before that point. He asked about the cooler choice and shared a screenshot of an AIDA64Extreme. He mentioned VDDCR refers to CPU core voltage, which is equivalent to Vcore for Intel.
VDDCR_CPU and VDDCR_SOC refer to the CPU and Memory Controller voltages. It’s not ideal to rely solely on automatic settings during overclocking; those can spike excessively, especially when adjusting TPU II. The best approach is manual control. I begin by applying a manual voltage of around 1.4v, gradually increasing the multiplier until stability returns. If instability appears, I adjust the LLC and retry. Although it might briefly exceed 1.4v, maintaining stable temperatures keeps it within acceptable limits—typically between 1.416 and 1.425 as AMD recommends.
CountMike provided details about VDDCR_CPU and VDDCR_SOC, mentioning CPU and Memory Controller voltages. He suggested checking HWInfo for accurate Ryzen system information. The HWInfo page linked was https://www.hwinfo.com/download/, and a screenshot showed the VDDCR set to 1.525 V by default with Asus's TPU II preset. In normal 3.6 GHz mode, AIDA64 didn't report a system failure, but only under TPU II, leading him to suspect voltage issues or uncertainty about safe operating voltages for 4.0 GHz mode.
The CPU is receiving 1.5v+, while the core voltage remains comfortably within the normal range. It's hard to figure out why these values differ, as my readings show the core voltage very close to the main reference voltage.