Der8auer runs an epyc processor on an x399 motherboard
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It's no secret that the AMD EPYC and Threadripper processors are first cousins, something that has been proven once again as the der8auer overclocker was able to run an EPYC processor on a motherboard with an X399 chipset.
EPYC and Threadripper only differ on one pin
Der8auer has mounted an EPYC processor on an X399 motherboard and has been able to make the system access memory recognition, from which point it stops sending signal. The overclocker has discovered a pin in the EPYC processors that once covered allows the processor to be booted on an X399 motherboard, in this case the chosen one has been an Asus X399 Zenith Extreme.
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This means that the socket and pin layout are the same for EPYC and Threadripper processors. The approach to detecting the pin in question has been crude, brute force, adding a piece of electrical tape to different parts of the CPU, thus reducing the search for a single pin. When this particular pin was covered, the motherboard performed a few initial boot steps until it stopped at memory boot code D0.
Der8auer thinks that a BIOS from an EPYC motherboard would be enough to run the EPYC CPU on this Threadripper motherboard.
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