Ultra 5 250KF Plus vs EPYC 7663
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 70 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 5.25 | no data |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC | no data |
| Power efficiency | 8.22 | no data |
| Designer | AMD | Intel |
| Manufacturer | TSMC | TSMC |
| Architecture codename | Milan (2021−2023) | Arrow Lake Refresh (2026) |
| Release date | 15 March 2021 (5 years ago) | 11 March 2026 (recently) |
| Launch price (MSRP) | $6,366 | $184 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 7663 and Core Ultra 5 250KF Plus 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 | 56 (Hexapentaconta-Core) | 18 (Octadeca-Core) |
| Threads | 112 | 18 |
| Base clock speed | 2 GHz | 4.2 GHz |
| Boost clock speed | 3.5 GHz | 5.3 GHz |
| Multiplier | 20 | no data |
| L1 cache | 64 KB (per core) | 192 KB (per core) |
| L2 cache | 512 KB (per core) | 3 MB (per core) |
| L3 cache | 256 MB (shared) | 30 MB (shared) |
| Chip lithography | 7 nm+ | 3 nm |
| Die size | 8x 81 mm2 | 243 mm2 |
| Number of transistors | 33,200 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on EPYC 7663 and Core Ultra 5 250KF Plus 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 | SP3 | 1851 |
| Power consumption (TDP) | 240 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7663 and Core Ultra 5 250KF Plus. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| SIPP | - | + |
Security technologies
EPYC 7663 and Core Ultra 5 250KF Plus technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7663 and Core Ultra 5 250KF Plus 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 EPYC 7663 and Core Ultra 5 250KF Plus. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-3200 | DDR5 |
| Maximum memory size | 4 TiB | no data |
| Maximum memory bandwidth | 204.795 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by EPYC 7663 and Core Ultra 5 250KF Plus.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 128 | 24 |
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 | 15 March 2021 | 11 March 2026 |
| Physical cores | 56 | 18 |
| Threads | 112 | 18 |
| Chip lithography | 7 nm | 3 nm |
| Power consumption (TDP) | 240 Watt | 125 Watt |
EPYC 7663 has 211.1% more physical cores and 522.2% more threads.
Ultra 5 250KF Plus, on the other hand, has an age advantage of 4 years, a 133.3% more advanced lithography process, and 92% lower power consumption.
We couldn't decide between AMD EPYC 7663 and Intel Core Ultra 5 250KF Plus. We've got no test results to judge.
Be aware that EPYC 7663 is a server/workstation processor while Core Ultra 5 250KF Plus is a desktop one.
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