AMD
AMD Ryzen 9 9900X
Twelve Zen 5 cores across two CCDs at a 120 W TDP, delivering 7900X-class throughput for 50 W less. It suits mixed workstation duty — rendering, compiling, transcoding — where the 9800X3D's eight cores are the bottleneck.
Pros
- Twelve cores at a 120 W TDP rather than the 7900X's 170 W — a large efficiency improvement generation over generation
- Zen 5 IPC plus a full-width 512-bit AVX-512 datapath — Zen 4 runs the same instructions double-pumped on 256-bit units — makes it markedly faster than the 7900X in encoding, compression and vector code
- 5.6 GHz boost keeps single-threaded work quick, close to the 9950X
- 64 MB L3, 28 CPU PCIe 5.0 lanes and the 2 CU RDNA 2 iGPU for a display-capable workstation
- Fits the same AM5 boards as the rest of the family, with no chipset change required
Cons
- Dual-CCD latency means it games slower than the cheaper 9800X3D
- No bundled cooler, and AVX-512 loads push it to its 162 W PPT quickly
- Six cores per CCD is an awkward split; some apps behave better on the 9950X's eight-core CCDs
- Priced close to the 9800X3D and not far below the 9950X, so it is squeezed from both sides
Excellent
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the AMD Ryzen 9 9900X
General
- Announced
- 2024
- Socket
- AM5
- Process
- 4 nm
- Base TDP
- 120 W
- Max turbo power
- 162 W
- Unlocked multiplier
- Yes
- Cooler included
- No
Cores & Clocks
- Cores
- 12
- Performance cores
- 12
- Efficiency cores
- 0
- Threads
- 24
- Base clock
- 4.4 GHz
- Boost clock
- 5.6 GHz
- L2 cache
- 12 MB
- L3 cache
- 64 MB
Integrated GPU
- iGPU
- AMD Radeon Graphics (2 CU RDNA 2)
- iGPU clock
- 2,200 MHz
Memory
- Memory support
- DDR5-5600
- Max memory
- 192 GB
- Memory channels
- 2
Platform
- PCIe version
- 5
- CPU PCIe lanes
- 28
Benchmarks
- Geekbench 6 (single)
- 3,300
- Geekbench 6 (multi)
- 19,800
- Cinebench R23 (single)
- 2,230
- Cinebench R23 (multi)
- 32,000
- PassMark
- 55,500
Quick answers
Is the AMD Ryzen 9 9900X good in 2026?
The AMD Ryzen 9 9900X earns an Inno Score of 85.8/100 (“Excellent”) based on its specs and benchmark results. Twelve Zen 5 cores across two CCDs at a 120 W TDP, delivering 7900X-class throughput for 50 W less. It suits mixed workstation duty — rendering, compiling, transcoding — where the 9800X3D's eight cores are the bottleneck.
What are the key specs of the AMD Ryzen 9 9900X?
Cores: 12 · Threads: 24 · Boost clock: 5.6 GHz · Socket: AM5
What are the closest alternatives to the AMD Ryzen 9 9900X?
Its closest rivals on InnoReviews are Intel Core i9-13900K, AMD Ryzen 9 7950X, Intel Core i9-14900K — open the comparison pages for a spec-by-spec breakdown.