Ryzen 9 8940HX vs Xeon w5-2555X
Aggregate performance score
Ryzen 9 8940HX outperforms Xeon w5-2555X by a moderate 11% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 169 | 140 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Laptop |
| Power efficiency | 11.59 | 58.93 |
| Designer | Intel | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | no data | Dragon Range (2025) |
| Release date | 1 July 2024 (less than a year ago) | 23 April 2025 (recently) |
Detailed specifications
Xeon w5-2555X and Ryzen 9 8940HX basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 14 (Tetradeca-Core) | 16 (Hexadeca-Core) |
| Performance-cores | 14 | no data |
| Threads | 28 | 32 |
| Base clock speed | 3.3 GHz | 2.4 GHz |
| Boost clock speed | 4.8 GHz | 5.3 GHz |
| L1 cache | no data | 64 KB (per core) |
| L2 cache | no data | 1 MB (per core) |
| L3 cache | 33.75 MB Intel® Smart Cache | 64 MB (shared) |
| Chip lithography | Intel 7 nm | 5 nm |
| Die size | no data | 2x 71 mm2 |
| Maximum core temperature | 75 °C | no data |
| Number of transistors | no data | 13,140 million |
| 64 bit support | + | + |
| Unlocked multiplier | + | + |
Compatibility
Information on Xeon w5-2555X and Ryzen 9 8940HX compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | FCLGA4677 | FL1 |
| Power consumption (TDP) | 252 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon w5-2555X and Ryzen 9 8940HX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Turbo Boost Max 3.0 | + | no data |
| Precision Boost 2 | no data | + |
| Deep Learning Boost | + | - |
Security technologies
Xeon w5-2555X and Ryzen 9 8940HX technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| SGX | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon w5-2555X and Ryzen 9 8940HX are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon w5-2555X and Ryzen 9 8940HX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5-4800 | DDR5 |
| Maximum memory size | 2 TB | no data |
| Max memory channels | 4 | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 610M |
Peripherals
Specifications and connection of peripherals supported by Xeon w5-2555X and Ryzen 9 8940HX.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 64 | 28 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 30.30 | 33.62 |
| Recency | 1 July 2024 | 23 April 2025 |
| Physical cores | 14 | 16 |
| Threads | 28 | 32 |
| Power consumption (TDP) | 252 Watt | 55 Watt |
Ryzen 9 8940HX has a 11% higher aggregate performance score, an age advantage of 9 months, 14.3% more physical cores and 14.3% more threads, and 358.2% lower power consumption.
The AMD Ryzen 9 8940HX is our recommended choice as it beats the Intel Xeon w5-2555X in performance tests.
Be aware that Xeon w5-2555X is a server/workstation processor while Ryzen 9 8940HX is a notebook one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
