Dissecting AMD Ryzen | CPU Engineering Discussion, ft. Wendell & AMD Engineer Amit (Gamers Nexus) [Video]

Gamers Nexus (2.46M subscribers)

June 21, 2025

Video length: 27m 38s

We talk with AMD Engineer Amit Mehra and Level1 Techs' Wendell about "deprocessed" silicon, looking inside and dissecting the CPUs to learn more about microarchitecture, the physical layout of CPUs, and structure. This is purely educational and intended to be an open discussion and interview where we learn alongside AMD's engineer about how CPUs are made and laid out. The demo is first done with an AMD Ryzen Threadripper 7995WX CPU, then with a PA-RISC 7300LC from 1995. Amit worked on both of these CPUs, with the PA-RISC chip being his first, and the Threadripper CPU being his most recent that he can publicly disclose.

00:00 - Inside AMD Threadripper Silicon 

02:06 - Chip Layout 

05:05 - What Amit Made 

11:15 - Amit's Bug Hunting 

13:05 - 1995 PA RISC 7300LC CPU 

15:33 - Challenges 

17:11 - Radiated Lead Problems 

21:22 - Easter Eggs Inside the CPU Silicon 

26:04 - What Still Applies Today

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