EPYC 9455 vs i9-12900HX
Primary details
Comparing Core i9-12900HX and EPYC 9455 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 258 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Power efficiency | 36.37 | no data |
| Architecture codename | Alder Lake-HX (2022) | Turin (2024) |
| Release date | 10 May 2022 (2 years ago) | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $5,412 |
Detailed specifications
Core i9-12900HX and EPYC 9455 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 | 16 (Hexadeca-Core) | 48 (Octatetraconta-Core) |
| Threads | 24 | 96 |
| Base clock speed | 2.3 GHz | 3.15 GHz |
| Boost clock speed | 5 GHz | 4.4 GHz |
| L1 cache | 80K (per core) | 80 KB (per core) |
| L2 cache | 1.25 MB (per core) | 1 MB (per core) |
| L3 cache | 30 MB (shared) | 192 MB (shared) |
| Chip lithography | Intel 7 nm | 4 nm |
| Die size | 215 mm2 | 6x 70.6 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 49,890 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-12900HX and EPYC 9455 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 | 2 |
| Socket | FCBGA1964 | SP5 |
| Power consumption (TDP) | 55 Watt | 300 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-12900HX and EPYC 9455. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Turbo Boost Max 3.0 | + | no data |
| Precision Boost 2 | no data | + |
| Deep Learning Boost | + | - |
Security technologies
Core i9-12900HX and EPYC 9455 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-12900HX and EPYC 9455 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 Core i9-12900HX and EPYC 9455. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4, DDR5 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 76.8 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics for 12th Gen Intel Processors | N/A |
| Quick Sync Video | + | - |
| Graphics max frequency | 1.55 GHz | no data |
| Execution Units | 32 | no data |
Graphics interfaces
Available interfaces and connections of Core i9-12900HX and EPYC 9455 integrated GPUs.
| Number of displays supported | 4 | no data |
Graphics image quality
Maximum display resolutions supported by Core i9-12900HX and EPYC 9455 integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 4096 x 2304 @ 60Hz | no data |
| Max resolution over eDP | 5120 x 3200 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core i9-12900HX and EPYC 9455 integrated GPUs, sometimes API versions are included.
| DirectX | 12.1 | no data |
| OpenGL | 4.6 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i9-12900HX and EPYC 9455.
| PCIe version | 5.0 and 4.0 | 5.0 |
| PCI Express lanes | 20 | 128 |
Pros & cons summary
| Recency | 10 May 2022 | 10 October 2024 |
| Physical cores | 16 | 48 |
| Threads | 24 | 96 |
| Power consumption (TDP) | 55 Watt | 300 Watt |
i9-12900HX has 445.5% lower power consumption.
EPYC 9455, on the other hand, has an age advantage of 2 years, and 200% more physical cores and 300% more threads.
We couldn't decide between Core i9-12900HX and EPYC 9455. We've got no test results to judge.
Be aware that Core i9-12900HX is a notebook processor while EPYC 9455 is a server/workstation one.
Should you still have questions on choice between Core i9-12900HX and EPYC 9455, ask them in Comments section, and we shall answer.
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