Ryzen 9 6900HX vs Xeon Silver 4123
Aggregate performance score
Ryzen 9 6900HX outperforms Xeon Silver 4123 by an impressive 72% based on our aggregate benchmark results.
Primary details
Comparing Xeon Silver 4123 and Ryzen 9 6900HX processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 837 | 433 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Laptop |
| Series | no data | AMD Rembrandt (Zen 3+) |
| Power efficiency | 8.17 | 32.81 |
| Architecture codename | no data | Rembrandt-H (Zen 3+) (2022) |
| Release date | 1 January 2018 (6 years ago) | January 2022 (2 years ago) |
Detailed specifications
Xeon Silver 4123 and Ryzen 9 6900HX 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 | 8 (Octa-Core) | 8 (Octa-Core) |
| Threads | 16 | 16 |
| Base clock speed | 3 GHz | 3.3 GHz |
| Boost clock speed | 3.2 GHz | 4.9 GHz |
| L1 cache | no data | 64K (per core) |
| L2 cache | no data | 512K (per core) |
| L3 cache | 11 MB | 16 MB (shared) |
| Chip lithography | 14 nm | 6 nm |
| Die size | no data | 208 mm2 |
| Maximum core temperature | no data | 95 °C |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Xeon Silver 4123 and Ryzen 9 6900HX 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 | no data | 1 |
| Socket | FCLGA3647 | FP7 |
| Power consumption (TDP) | 105 Watt | 45 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Silver 4123 and Ryzen 9 6900HX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX-512 | MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA |
| AES-NI | + | + |
| AVX | - | + |
| vPro | + | 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 | + |
Security technologies
Xeon Silver 4123 and Ryzen 9 6900HX technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Silver 4123 and Ryzen 9 6900HX are enumerated here.
| AMD-V | - | + |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4123 and Ryzen 9 6900HX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2400 | DDR5 |
| Maximum memory size | 512 GB | no data |
| Max memory channels | 6 | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 680M |
Peripherals
Specifications and connection of peripherals supported by Xeon Silver 4123 and Ryzen 9 6900HX.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 48 | 20 |
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
Pros & cons summary
| Performance score | 9.41 | 16.19 |
| Chip lithography | 14 nm | 6 nm |
| Power consumption (TDP) | 105 Watt | 45 Watt |
Ryzen 9 6900HX has a 72.1% higher aggregate performance score, a 133.3% more advanced lithography process, and 133.3% lower power consumption.
The Ryzen 9 6900HX is our recommended choice as it beats the Xeon Silver 4123 in performance tests.
Be aware that Xeon Silver 4123 is a server/workstation processor while Ryzen 9 6900HX is a notebook one.
Should you still have questions on choice between Xeon Silver 4123 and Ryzen 9 6900HX, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
