Your 7800x3D temperatures are within typical ranges.
Your 7800x3D temperatures are within typical ranges.
The temperature constraints are more intricate too. The sensor is tracking an indirect reading while also considering two extra heat transfer layers added by the 3D v-cache module. AMD probably determined that -5°C was enough for the standard Ryzen 7000, but I think a delid would fully resolve this issue. Each thermal layer needs a temperature variation; eliminating those layers will lower the operating heat source temperature. For the 7000x3D, it seems to drop significantly, possibly stopping the need for red lining while still using the full multiplier. It’s surprising I achieved 5.05GHz on the 7800x3D or 5.25GHz on the 7950x3D in an 8+0 configuration—though that would likely demand a delid. It’s odd I got 18469 multi and 1861 single on CCD0, yet they might have bined the 7950x3D CCDs somewhat. Could your PBO -30mV be quite aggressive?
Yes, the voltage and current limits serve as essential safety measures to protect equipment and users from damage or hazards.
It depends on the perspective—voltage and current issues were common with the 7000x3D CPUs, since their power consumption directly affects voltage levels. Removing the temperature cap still imposes limits, but without it, wattage demands become more critical. The exact performance hinges on design choices; overheating likely forced a strict voltage cap. "SkatterBencher" shared a screenshot showing up to 5.6 GHz at 1.087V, suggesting with better cooling and tuning there’s still room for improvement. The overclocker offered limited details, hinting at ongoing tests for stability. AMD Ryzen 7 7800X3D was boosted to 5.4 GHz using the EK-Quantum Power Kit, and Velocity² reported higher frame rates on Zen4 chips running between 105-120W.
They weren't damaged on specific boards due to misconfigured EXPO installations (not caused by user mistakes).
They needed to limit the SoC voltage to avoid the problem. “Our team identified the root cause and already sent out an updated [AMD Generic Encapsulated Software Architecture] that adds safeguards on specific power rails in AM5 boards, stopping the CPU from exceeding its limits, such as capping SOC voltage at 1.3V.” Overclocking was turned off for Ryzen X3D chips because they use a 3D V-cache, which enforces a fixed voltage threshold. Running them above that voltage or frequency offers minimal gains and can cause instability and temperature issues, making it wise not to bypass this restriction. The fix doesn’t stop users from overclocking memory via EXPO or XMP settings, nor should it block using AMD’s Precision Boost Overdrive (PBO) for performance enhancement. AMD has resolved the problem of premature failure in Ryzen 7000 X3D processors – The Verge
I can experiment a little and check if an all-core -25 or -20 performs better, and once I have the timing I can switch to the per-core configuration.
I haven't used per-core myself. My setup stays stable with +200/-15, but I do experience some heat issues. The 3D v-cache makes it run hotter even at lower power because of the AMD L3 cache addition. You'll hit a thermal ceiling with the chip, especially when handling all core tasks. The design is meant to work that way unless you disable it.