The Truth About AMD's CPU Failures: X-Ray, Tunneling Electron Microscope, FIB / focused ion beam repair

[erek]

Pretty hardcore

"This is our Failure Analysis report of the AMD Ryzen 7800X3D CPUs that exploded on our test benches -- some as a result of over-current, some as a result of degradation leading to failure. We worked with an external Failure Analysis Lab to evaluate the result of AMD 7800X3D CPUs getting too much voltage (VSOC especially) and likely too much current, especially in scenarios where ASUS OCP fails to do anything useful. This complements our prior Root Cause Analysis we performed in part 1, linked below, and uses a scanning electron microscope, C-mode scanning acoustic microscopy, and more to investigate a burned CPU that came out of an ASUS board."

Source:

 

[THRESHIN]

I watched that video while having lunch at work last night. Super cool, loved the incredible detail.

And noted the foreshadowing....stab at Asus?

 

[UnknownSouljer]

I watched that video while having lunch at work last night. Super cool, loved the incredible detail.

And noted the foreshadowing....stab at Asus?

This improper OTP issue reminds me a lot of about 10 or 12 years ago when all of the motherboard vendors were essentially putting in minor over clocks into their boards in order to appear favorable in benchmarks versus other motherboards of the same chipset.

But, the issue was normal configurations were having stability problems due to the over clocks that users hadn’t even turned on.

Unlimited voltage sounds great in order to overclock your chips with maximum stability up until the point that it cooks your chip.