Ultra X9 378H vs EPYC Embedded 3451
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Laptop |
| Series | AMD EPYC Embedded | Intel Panther Lake |
| Designer | AMD | Intel |
| Manufacturer | GlobalFoundries | no data |
| Architecture codename | Zen (2017−2020) | Panther Lake (2026) |
| Release date | 21 February 2018 (8 years ago) | 5 April 2026 (less than a year ago) |
| Launch price (MSRP) | $880 | no data |
Detailed specifications
Basic parameters of EPYC Embedded 3451 and Core Ultra X9 378H: 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) | 16 (Hexadeca-Core) |
| Threads | 32 | 16 |
| Base clock speed | 2.15 GHz | 1.6 GHz |
| Boost clock speed | 3 GHz | 5 GHz |
| Multiplier | 21.5 | no data |
| L1 cache | 96K (per core) | no data |
| L2 cache | 512K (per core) | 12.5 MB |
| L3 cache | 32 MB (shared) | 18 MB |
| Chip lithography | 14 nm | 2 nm |
| Die size | 2x 213 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 4,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on EPYC Embedded 3451 and Core Ultra X9 378H 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 (Uniprocessor) | no data |
| Socket | AMD BGA SP4r2 | FCBGA2540 |
| Power consumption (TDP) | 100 Watt | no data |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC Embedded 3451 and Core Ultra X9 378H. You'll probably need this information if you require some particular technology.
| AES-NI | + | - |
| AVX | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC Embedded 3451 and Core Ultra X9 378H are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC Embedded 3451 and Core Ultra X9 378H. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | no data |
| Maximum memory size | 1 TiB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 85.33 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel Arc B390 12 Xe3 Panther Lake iGPU ( - 2500 MHz) |
Peripherals
Specifications and connection of peripherals supported by EPYC Embedded 3451 and Core Ultra X9 378H.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 64 | no data |
Pros & cons summary
| Recency | 21 February 2018 | 5 April 2026 |
| Threads | 32 | 16 |
| Chip lithography | 14 nm | 2 nm |
EPYC Embedded 3451 has 100% more threads.
Ultra X9 378H, on the other hand, has an age advantage of 8 years, and a 600% more advanced lithography process.
We couldn't decide between AMD EPYC Embedded 3451 and Intel Core Ultra X9 378H. We've got no test results to judge.
Be aware that EPYC Embedded 3451 is a server/workstation processor while Core Ultra X9 378H is a notebook one.
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