EPYC 7643 vs Ultra 9 290HX Plus
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 18 | 76 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 7.25 |
| Market segment | Laptop | Server |
| Series | no data | AMD EPYC |
| Power efficiency | no data | 8.17 |
| Designer | Intel | AMD |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Arrow Lake-HX Refresh (2026) | Milan (2021−2023) |
| Release date | 17 March 2026 (recently) | 15 March 2021 (5 years ago) |
| Launch price (MSRP) | no data | $4,995 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core Ultra 9 290HX Plus and EPYC 7643 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 | 24 (Tetracosa-Core) | 48 (Octatetraconta-Core) |
| Threads | 24 | 96 |
| Base clock speed | 2.7 GHz | 2.3 GHz |
| Boost clock speed | 5.5 GHz | 3.6 GHz |
| Multiplier | no data | 23 |
| L1 cache | 192 KB (per core) | 64 KB (per core) |
| L2 cache | 3 MB (per core) | 512 KB (per core) |
| L3 cache | 36 MB (shared) | 256 MB (shared) |
| Chip lithography | 3 nm | 7 nm+ |
| Die size | 243 mm2 | 8x 81 mm2 |
| Number of transistors | 17,800 million | 33,200 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Core Ultra 9 290HX Plus and EPYC 7643 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 | Intel BGA 2114 | SP3 |
| Power consumption (TDP) | 55 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 9 290HX Plus and EPYC 7643. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | no data |
Security technologies
Core Ultra 9 290HX Plus and EPYC 7643 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 9 290HX Plus and EPYC 7643 are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 290HX Plus and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4-3200 |
| Maximum memory size | no data | 4 TiB |
| Maximum memory bandwidth | no data | 204.795 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Arc Xe-LPG Graphics 64EU | N/A |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 9 290HX Plus and EPYC 7643.
| PCIe version | 5.0 | 4.0 |
| PCI Express lanes | 24 | 128 |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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
| Recency | 17 March 2026 | 15 March 2021 |
| Physical cores | 24 | 48 |
| Threads | 24 | 96 |
| Chip lithography | 3 nm | 7 nm |
| Power consumption (TDP) | 55 Watt | 225 Watt |
Ultra 9 290HX Plus has an age advantage of 5 years, a 133.3% more advanced lithography process, and 309.1% lower power consumption.
EPYC 7643, on the other hand, has 100% more physical cores and 300% more threads.
We couldn't decide between Intel Core Ultra 9 290HX Plus and AMD EPYC 7643. We've got no test results to judge.
Be aware that Core Ultra 9 290HX Plus is a notebook processor while EPYC 7643 is a server/workstation one.
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