Ryzen 9 8940HX vs EPYC 9745
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 8 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.34 | no data |
| Market segment | Server | Laptop |
| Power efficiency | 20.21 | no data |
| Designer | AMD | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Turin (2024) | Dragon Range (2025) |
| Release date | 10 October 2024 (less than a year ago) | 23 April 2025 (recently) |
| Launch price (MSRP) | $12,141 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 9745 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 | 128 | 16 (Hexadeca-Core) |
| Threads | 256 | 32 |
| Base clock speed | 2.4 GHz | 2.4 GHz |
| Boost clock speed | 3.7 GHz | 5.3 GHz |
| L1 cache | 80 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 256 MB (shared) | 64 MB (shared) |
| Chip lithography | 3 nm | 5 nm |
| Die size | no data | 2x 71 mm2 |
| Number of transistors | no data | 13,140 million |
| 64 bit support | + | + |
| Unlocked multiplier | - | + |
Compatibility
Information on EPYC 9745 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 | 2 | 1 |
| Socket | SP5 | FL1 |
| Power consumption (TDP) | 400 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 9745 and Ryzen 9 8940HX. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 9745 and Ryzen 9 8940HX are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 9745 and Ryzen 9 8940HX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | AMD Radeon 610M |
Peripherals
Specifications and connection of peripherals supported by EPYC 9745 and Ryzen 9 8940HX.
| PCIe version | 5.0 | 5.0 |
| PCI Express lanes | 128 | 28 |
Pros & cons summary
| Recency | 10 October 2024 | 23 April 2025 |
| Physical cores | 128 | 16 |
| Threads | 256 | 32 |
| Chip lithography | 3 nm | 5 nm |
| Power consumption (TDP) | 400 Watt | 55 Watt |
EPYC 9745 has 700% more physical cores and 700% more threads, and a 66.7% more advanced lithography process.
Ryzen 9 8940HX, on the other hand, has an age advantage of 6 months, and 627.3% lower power consumption.
We couldn't decide between AMD EPYC 9745 and AMD Ryzen 9 8940HX. We've got no test results to judge.
Be aware that EPYC 9745 is a server/workstation processor while Ryzen 9 8940HX is a notebook one.
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