AMD Ryzen Processors Overheat Under Intense Mathematical Processing, According to GMP
Principal developer of the open-source GMP (GNU Multiple Precision Arithmetic Library) project, Torbjörn Granlund, has reported two Ryzen 9950X processors failed within months while undergoing intensive testing. The failures, which occurred in February and August, were accompanied by visible heat damage, suggesting overheating.
Granlund, who currently works at Yubico, is sending the CPUs to AMD for detailed information collection. He suspects that the tight MULX instruction loops in GMP's code may have caused excessive power consumption and overheating beyond the cooling capacity of the processors.
The two CPUs in question were used with Asus motherboards, but Asus has yet to respond to a request for comment regarding the issue. Granlund is taking precautions to prevent a third CPU failure by rebuilding the system with a better case, larger heat sink, and a temperature monitoring script.
AMD is investigating the observations with their program on Ryzen 9950X processors. The tech giant has confirmed that they are replacing Granlund's second Ryzen 9950X CPU. However, AMD executives have stated that reports of AM5 socket burnouts can be attributed to hardware partners failing to adhere to recommended specifications, but this may not necessarily apply to the GMP observations.
The GMP project has advised caution against using GMP heavily on any Zen 5 processor. They suspect that the problem with the fried Ryzen CPUs is not the widely reported problem with ASRock motherboards, but rather due to GMP's tight loops around MULX making Zen 5 cores use more power than specified.
AMD has reached out to GMP to obtain additional details about the situation. Granlund has acknowledged that his cooling solution could have been better, but he maintains that the failures were not entirely his fault.
This development comes as a concern for users relying on high-performance computing and intensive GMP testing. As the investigation continues, users are advised to exercise caution when using Zen 5 processors for such tasks.
