AMD Ryzen 9 9955HX
Expert rating8.5 / 10
- Brand:
- AMD
- Form Factor:
- Laptop
- CPU Socket:
- FL1
- Core/Thread Count:
- 16 Core / 32 Thread
- TDP:
- 55 W
- iGPU:
- AMD Radeon 610M
- CPU Series:
- Ryzen
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Manufacturer: AMD Last updated: 2026-10-10
AMD Ryzen 9 9955HX Review
AMD Ryzen 9 9955HX 16-core 32-thread mobile processor, 2.9GHz base / 5.2GHz boost, 55W TDP, Zen 4 (Dragon Range)
The AMD Ryzen 9 9955HX is an unlocked, desktop-class mobile processor for high-end gaming and creator laptops. Built on AMD's Zen 4 (Dragon Range), it pairs 16 cores and 32 threads with a 2.9GHz base clock boosting to 5.2GHz and 32MB of L3 cache, all within a 55W power envelope.
Performance and Architecture
With 16 cores and 32 threads, the AMD Ryzen 9 9955HX is built on AMD's Zen 4 (Dragon Range). Its 2.9GHz base clock boosts up to 5.2GHz, backed by 32MB of L3 cache for solid multitasking and application performance in a laptop chassis.
Measured results
Cinebench scores
| Cinebench 2024, Multi-Core Median of 2 independently published results. | 2,058 2,025 to 2,091 |
| Cinebench 2024, Single-Core Median of 2 independently published results. | 132 130 to 134 |
Measured results
Geekbench scores
| Geekbench 6, Multi-Core Median of 2 independently published results. | 19,441 19,433 to 19,448 |
| Geekbench 6, Single-Core Median of 2 independently published results. | 3,252 3,230 to 3,273 |
Graphics and Efficiency
The AMD Ryzen 9 9955HX operates within a 55W power envelope, positioned as an unlocked, desktop-class mobile processor for high-end gaming and creator laptops. Integrated graphics come from AMD Radeon 610M Graphics (RDNA 2), handling everyday graphics tasks and light gaming without a discrete GPU.
Comparison to Alternatives
Within AMD's Ryzen mobile lineup in this catalog, the AMD Ryzen 9 9955HX sits among other Zen 4 (Dragon Range) parts at the 16-core tier, differentiated by suffix and TDP class. Against Intel's Core Mobile processors in this catalog, the AMD Ryzen 9 9955HX offers competitive multi-threaded performance and efficiency, while against AMD's own Ryzen AI Mobile chips in this catalog it trades a dedicated NPU/AI acceleration block for a simpler, often lower-cost platform.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8.5 / 10
The AMD Ryzen 9 9955HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.
Best for
- Gaming laptops
- Mobile content creation
- High-performance mobile workstations
Not for
- Thin-and-light ultraportables
- All-day battery life needs
- Fanless designs
Specifications
What these specs meanIdentity
| Codename | Fire Range |
|---|---|
| Release Year | 2025 |
Segment and platform
| Market Segment | Laptop |
|---|---|
| Microarchitecture | Zen 5 (Fire Range) |
| Socket | FL1 |
| Process Node | TSMC 4nm FinFET |
Core configuration
| Total Cores | 16 |
|---|---|
| Performance Cores | 16 |
| Efficiency Cores | 0 |
| Total Threads | 32 |
| SMT Enabled | Yes |
Clock speeds
| P-Core Base Clock | 2.5 GHz |
|---|---|
| P-Core Boost Clock | 5.4 GHz |
| Unlocked Multiplier | Yes |
Cache
| L2 Cache | 16 MB |
|---|---|
| L3 Cache | 64 MB |
| 3D Stacked Cache | No |
Power and thermal
| Base Power | 55-75W |
|---|---|
| Max Turbo Power | 75 W |
| Configurable TDP Floor | 55 W |
| Max Operating Temp | 100 C |
Memory
| Memory Type | DDR5, 2-Channel |
|---|---|
| Max Memory Speed | 5600 MT/s |
| Memory Channels | 2 |
| Max Memory Capacity | 96 GB |
| ECC Support | No |
Graphics and AI
| Integrated Graphics | Yes |
|---|---|
| iGPU Model | AMD Radeon 610M |
| iGPU Compute Units | 2 |
| Copilot Plus Certified | No |
Expansion
| PCIe Generation | PCIe 5.0 |
|---|---|
| PCIe Lanes | 28 |
Commercial
| Retail Availability | Tray OEM |
|---|
| Form Factor | Laptop |
|---|---|
| TDP | 55 W |
| iGPU | AMD Radeon 610M |
FAQs
What are the key specifications of the AMD Ryzen 9 9955HX?
The AMD Ryzen 9 9955HX has 16 cores and 32 threads, a 2.5 GHz base and 5.4 GHz boost clock, 64 MB of L3 cache and a 55 W TDP. Integrated graphics: AMD Radeon 610M. Socket: FL1.
Will the AMD Ryzen 9 9955HX work with my current setup?
The AMD Ryzen 9 9955HX lists Socket is BGA (soldered, mobile). Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the AMD Ryzen 9 9955HX best suited to?
Best suited to: Gaming laptops; Mobile content creation; High-performance mobile workstations.
What are the drawbacks of the AMD Ryzen 9 9955HX?
Not the best fit for: Thin-and-light ultraportables; All-day battery life needs; Fanless designs.