Ryzen 9 9955HX
AMD
PassMark
55,711
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The Ryzen 9 9955HX is manufactured by AMD. It was released in 2025-01-01. It is based on the Fire Range-HX (Zen 5) (2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 55,711 points. Launch price was $650.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar
FPS Benchmarks
Predicted performance for Ryzen 9 9955HX across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Technical Analysis
Detailed breakdown of Ryzen 9 9955HX specifications and capabilities.
Processing Power
The Ryzen 9 9955HX is a 16-core / 32-thread processor based on the Fire Range-HX (Zen 5) (2025) architecture, manufactured on a 4 nm process node. It reaches a maximum boost clock of 5.4 GHz from a base frequency of 2.5 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 64 MB (total) of L3 cache, plus 1 MB (per core) of L2 cache and 80 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 55,711, placing it in the Enthusiast performance tier as a Current Gen generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 3,219, while multi-core reaches 19,563. Cinebench R23 multi-core (measuring sustained rendering workload performance) scores 38,010.
| Specification | Ryzen 9 9955HX |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 16C / 32T |
| Max Boost ClockPeak single-core speed under boost | 5.4 GHz |
| Base ClockGuaranteed minimum operating frequency | 2.5 GHz |
| ArchitectureCPU microarchitecture design | Fire Range-HX (Zen 5) (2025) |
| Process NodeFabrication technology — smaller = more efficient | 4 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 64 MB (total) |
| L2 CachePer-core fast cache for frequently accessed data | 1 MB (per core) |
| L1 CacheUltra-fast per-core cache | 80 kB (per core) |
| Die SizePhysical silicon area of the processor | 2x 70.6 mm2 |
| Transistor CountMore transistors = more capabilities | 16,630 million |
| 64-bit Support | Yes |
| Unlocked MultiplierWhether the CPU can be overclocked | Yes (Overclockable) |
| PassMark ScoreOverall multi-threaded benchmark score | 55,711 |
| Cinebench R23 MultiSustained multi-core rendering performance | 38,010 |
| Geekbench 6 SingleSingle-core performance — most relevant for gaming | 3,219 |
| Geekbench 6 MultiMulti-core parallel workload performance | 19,563 |
Memory & Platform
The Ryzen 9 9955HX fits into the FL1 socket and supports PCIe 5.0 with 28 total PCIe lanes for expansion cards and storage. It supports DDR5 memory at speeds up to DDR5-5600 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 96 GB across 2 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers. Integrated graphics: Radeon 610M — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.
| Specification | Ryzen 9 9955HX |
|---|---|
| TypeDesktop or Laptop processor | Laptop |
| SeriesProduct family | AMD Dragon Range (Zen 4, Ryzen 7045) |
| SocketMotherboard socket required | FL1 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 5.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 28 |
| RAM TypeSupported memory standard | DDR5 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR5-5600 |
| Max RAM CapacityMaximum installable memory | 96 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | Yes |
| Integrated GPUBuilt-in graphics processor | Radeon 610M |
| Compatible ChipsetsMotherboard chipsets that support this CPU | AMD FL1 |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Advanced Features
It features an unlocked multiplier, allowing enthusiasts to overclock beyond stock frequencies for additional performance. It supports AVX-512 instructions — specialized SIMD operations that significantly accelerate AI inference, scientific computing, and video encoding workloads. Virtualization: true — enables running virtual machines efficiently (important for development and server workloads). Its primary market competitor is the Core Ultra 9 275HX.
| Specification | Ryzen 9 9955HX |
|---|---|
| OverclockingWhether CPU clock can be manually increased | ✅ Unlocked |
| AVX-512Advanced vector instructions for AI/ML workloads | ✅ Supported |
| VirtualizationHardware-assisted virtualization technology | true |
| Direct CompetitorMarket equivalent from rival manufacturer | Core Ultra 9 275HX |
Power & Cooling
The Ryzen 9 9955HX has a rated TDP (Thermal Design Power) of 55 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: Laptop Cooling.
| Specification | Ryzen 9 9955HX |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 55 Watt |
| Included CoolerStock cooler bundled in the box | No |
| Recommended CoolerSuggested aftermarket cooling solution | Laptop Cooling |
Value Analysis
Performance ranking position: #163 out of all indexed processors.
| Specification | Ryzen 9 9955HX |
|---|---|
| Launch PriceOriginal retail price at launch | $650 |
| Performance RankPosition in overall performance ranking | #163 |
| Release DateLaunch date | 2025-01-01 |
| Release Year | 2025 |
| DesignerArchitecture designer (e.g. Intel, AMD) | AMD |
| ManufacturerFabrication foundry (e.g. TSMC) | TSMC |
Similar Performance
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Our Recommendation for Ryzen 9 9955HX
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