ASUS has finally offered a statement on the recent cases of AMD Ryzen 7000 CPUs being damaged on its AM5 motherboards & why the older BIOS was removed.
Last week, we reported the first cases of damaged AMD Ryzen 7000 CPUs appearing over at the various hardware subreddits. The most prominent of the cases was an AMD Ryzen 7800X3D CPU bulging out of its contact pads and completely damaging itself along with the motherboard. It was discovered that the issue was related to the motherboard and more specifically its BIOS which did not have the necessary voltage restrictions to stop the CPU from pulling excess voltage. There was also full voltage control available to users on the Ryzen 7000 3D V-Cache chips which are fragile in design and cannot sustain higher voltages as that could lead to permanent damage to the stacked cache.
Now, ASUS has come up with the first response on the matter and they have the following to say:
The EFI updates posted on Friday contain some dedicated thermal monitoring mechanisms we've implemented to help protect the boards and CPUs. We removed older BIOSes for that reason and also because manual VCore control was available on previous builds.
We're also working with AMD on defining new rules for AMD Expo and SoC voltage. We'll issue new updates for that ASAP. Please bear with us.
Rajinder Gill, ASUS (via Der8auer)
As you can tell, the ASUS AM5 BIOS which we saw being removed earlier was due to the fact that they have full voltage control available and that could lead to improper behavior on the new AMD Ryzen 7000X3D CPUs. The unlocked voltage was even damaging the non-X3D parts which are able to sustain higher voltages due to far better overclocking capabilities. Almost all manufacturers had cases
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