GoKawiilUnreleased AMD Ryzen 9 5900X3D prototype surfaces with 128MB L3 cache
An engineering sample of AMD's never-released Ryzen 9 5900X3D has appeared on the Chiphell forums, showing 128MB of L3 cache from 64MB of 3D V-Cache stacked on one of its two core complex dies. CPU-Z data also shows a clock speed near 4.65GHz, suggesting the chip could have nearly matched the retail Ryzen 9 5900X's boost clock. AMD had teased a 12-core '3D Chiplet Prototype' at Computex 2021 claiming up to 15% faster gaming performance than the standard 5900X.