A Reddit user, "Leviathon6425," shared his experience of buying a seemingly dirt-cheap, second-hand Ryzen 9 9900X3D processor on Amazon. However, upon receiving the package, he noticed something was amiss with the silkscreen on the side of the packaging box. While the model name was obscured, the serial number revealed the truth: it was actually a Ryzen 9 3900X, a processor released back in 2019. Let's take a closer look at the specs. The Ryzen 9 9900X3D boasts a cutting-edge Zen5 architecture, a refined 4nm process, 12 cores and 24 threads, a whopping 140MB cache, and a boost frequency of 5.5GHz. In contrast, the Ryzen 9 3900X features an older Zen2 architecture, a 12nm process, the same 12 cores and 24 threads, but a much smaller 70MB cache, and a boost frequency of only 4.6GHz. The performance gap between these two processors is substantial. Suspecting that he had been sold a swapped processor, Leviathon6425 turned to the Reddit community for advice. Commenters unanimously urged him not to unseal the package and to immediately contact customer service for a refund. They also reminded him of the importance of exercising caution when engaging in second-hand transactions.