AMD · Ryzen 9 · 2024 · AM5
The AMD Ryzen 9 9900X3D is a desktop processor with 12 cores, released in 2024 at an MSRP of $649. It is part of the Ryzen 9 lineup, using the Ryzen 9000 platform, and fits the AM5 socket. Internally, it is built on the "Zen 5" architecture. Thanks to AMD Simultaneous Multi-Threading (SMT), each core can handle two instruction streams simultaneously, yielding a total of 24 threads for improved parallelism. The Ryzen 9 9900X3D has a base clock of 4.4 GHz and can boost up to 5.5 GHz depending on workload and thermal headroom. AMD manufactures the "Zen 5" silicon on a TSMC 4nm process node. The multiplier is unlocked, making overclocking straightforward. This processor supports DDR5 memory. ECC memory is supported, provided the motherboard enables it. With a TDP of 120W, the Ryzen 9 9900X3D sits in a typical power envelope for a modern desktop CPU. Integrated graphics are provided by the Radeon Graphics solution, so a discrete GPU is not required for display output. The cache hierarchy consists of 768KB of L1, 12MB of L2, and 128MB of L3 cache — an unusually large L3 that greatly benefits latency-sensitive workloads like gaming.
3D V-Cache — 64MB standard L3 + 64MB stacked V-Cache.
| Brand | AMD |
|---|---|
| Family | Ryzen 9 |
| Series | Ryzen 9000 |
| Architecture | Zen 5 |
| Type | Desktop |
| Launch year | 2024 |
| Cores | 12 |
| Threads | 24 |
| Base clock | 4.4 GHz |
| Boost clock | 5.5 GHz |
| L1 cache | 768KB |
| L2 cache | 12MB |
| L3 cache | 128MB |
| TDP | 120W |
| Socket | AM5 |
| Process | TSMC 4nm |
| Memory type | DDR5 |
| Integrated graphics | Radeon Graphics |
| Chipsets | X870E, X870, X670E, X670, B650E, B650, A620 |
| Launch MSRP | $649 |
| Part number | 100-100001368WOF |
| OEM / tray part number | 100-000001368 |