AMD Ryzen 9 9955HX
- Cores: 16
- L3 cache: 64MB (shared)
- TDP: 55-75 W (max. boost up to 101 W)
- Transistor size: 4 nm
Ryzen 9 9955HX - laptop processor produced by Amd for socket FL1 that has 16 cores and 32 threads. The base clock frequency of the CPU is 2500 MHz, but due to Turbo Core technology, it can perform up to 5400 MHz. The size of the L3 cache is 64 MB. Please note that this chip has integrated graphics Radeon 610M.
Review
Compare AMD Ryzen 9 9955HX with other CPUs
Test in Benchmarks
Performance test of AMD Ryzen 9 9955HX in benchmarksCinebench
| Cinebench 2026 (Single) | 717 |
| Cinebench 2026 (Multi) | 8163 |
Cinebench Scores - 16th place
GeekBench v6
| File compression | 1520 MB/sec |
| Clang compilation | 222.1 Klines/sec |
| HTML 5 Browser | 329.3 pages/sec |
| PDF Renderer | 545.2 Mpixels/sec |
| Text processing | 341.3 pages/sec |
| Background blur | 70.4 images/sec |
| Photo processing | 123 images/sec |
| Ray tracing | 53.8 Mpixels/sec |
PassMark
| Integer math | 213 GOps/sec |
| Floating point math | 137 GOps/sec |
| Find prime numbers | 288M Primes/sec |
| Random string sorting | 78.1M Strings/sec |
| Data encryption | 37.4 GBytes/sec |
| Data compression | 734.3 MBytes/sec |
| Physics | 2722 Frames/sec |
| Extended instructions | 58.2B Matrices/sec |
Blender
Performance Per Watt
| Cinebench 2024 / Watt | 27.9 PPW |
| Geekbench 6 Multi / Watt | 259.3 PPW |
| Passmark CPU Mark / Watt | 750.7 PPW |
| Blender / Watt | 7.19 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
| Date | Benchmark | Result |
|---|---|---|
| ๐ 2026-06-21 (Tino) | Cinebench 2026 | 717 / 8163 |
| ๐ 2026-04-26 (Runzliger-Bert) | Cinebench 2024 | 128 / 2058 |
| ๐ 2025-06-08 (Thebakedging) | Cinebench 2024 | 134 / 2091 |
Specifications
Ryzen 9 9955HX technical specificationsGeneral
| Vendor | Amd |
| Released | January 7, 2025 |
| Type | Laptop |
| Instruction Set | x86-64 |
| Codename | Zen 5 (Fire Range) |
| Model number | 9955HX |
| Integrated GPU | Radeon 610M |
| Intel Equivalent | - Intel Core Ultra 9 285HX |
AMD Ryzen CPU ranking - 9th place
CPU
| P-Cores | 16 |
| P-Threads | 32 |
| Base Frequency (P) | 2.5 GHz |
| Turbo Boost Frequency (P) | 5.4 GHz |
| Total Cores | 16 |
| Total Threads | 32 |
| Bus Frequency | 100 MHz |
| Multiplier | 25x |
| L1 Cache | 80K (per core) |
| L2 Cache | 1MB (per core) |
| L3 Cache | 64MB (shared) |
| Unlocked Multiplier | Yes |
Package
| Fabrication Process | 4 nm |
| TDP (PL1) | 55-75 W (configurable) |
| Max. Boost TDP (PL2) | 101 W |
| Socket | FL1 |
| Peak Temperature | 100ยฐC |
Laptop processors ranking - 17th place
iGPU
| Integrated Graphics | Radeon 610M |
| GPU Base Clock | 400 MHz |
| GPU Boost Clock | 2200 MHz |
| Shading Units | 128 |
| TMUs | 8 |
| ROPs | 4 |
| Execution Units | 2 |
| TGP | 15 W |
See also: Radeon 610M โ integrated graphics of AMD Ryzen 9 9955HX
Memory Support
| Memory Types | - DDR5-5600 |
| Max. Memory Size | 96 GB |
| Memory Channels | 2 |
| ECC Support | Yes |
Misc
| Official Site | AMD Ryzen 9 9955HX official page |
| PCI Express Version | 5.0 |
| PCI Express Lanes | 28 |
| Technologies | - Memory: AMD EXPO
- Compute: AVX-512, BMI1, BMI2, F16C, SHA
- Performance: Precision Boost 2, Precision Boost OD, SMT
- Virtualization: AMD-V
- Security: EVP, SMAP, SMEP |