Performance per price, higher is better.
Xeon D-2166NT vs EPYC 7251
Aggregated performance score
EPYC 7251
2017
8 cores / 16 threads
9.75
Xeon D-2166NT outperforms EPYC 7251 by 1% based on our aggregated benchmark results.
General info
Comparing EPYC 7251 and Xeon D-2166NT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 712 | 703 |
| Place by popularity | not in top-100 | not in top-100 |
| Value for money | 7.90 | 2.55 |
| Market segment | Server | Server |
| Series | AMD EPYC | Intel Xeon D |
| Architecture codename | Naples (2017−2018) | Skylake (server) (2017−2019) |
| Release date | 29 June 2017 (6 years old) | 7 February 2018 (6 years old) |
| Launch price (MSRP) | $574 | $1,005 |
| Current price | $348 (0.6x MSRP) | $2473 (2.5x MSRP) |
Value for money
EPYC 7251 has 210% better value for money than Xeon D-2166NT.
Technical specs
EPYC 7251 and Xeon D-2166NT 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 | 8 (Octa-Core) | 12 (Dodeca-Core) |
| Threads | 16 | 24 |
| Base clock speed | 2.1 GHz | 2 GHz |
| Boost clock speed | 2.9 GHz | 3 GHz |
| Bus support | no data | 4 × 8 GT/s |
| L1 cache | 96K (per core) | 768 KB |
| L2 cache | 512K (per core) | 12 MB |
| L3 cache | 32 MB (shared) | 16.5 MB |
| Chip lithography | 14 nm | 14 nm |
| Die size | 192 mm2 | no data |
| Number of transistors | 4,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | Yes | No |
Compatibility
Information on EPYC 7251 and Xeon D-2166NT 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 (Multiprocessor) | 1 |
| Socket | TR4 | FCBGA2518 |
| Power consumption (TDP) | 120 Watt | 85 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7251 and Xeon D-2166NT. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| QuickAssist | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | no data | + |
| Turbo Boost Max 3.0 | no data | - |
| Status | no data | Launched |
Security technologies
EPYC 7251 and Xeon D-2166NT technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| MPX | no data | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7251 and Xeon D-2166NT are enumerated here.
| AMD-V | + | no data |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7251 and Xeon D-2166NT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR4 |
| Maximum memory size | 2 TiB | 512 GB |
| Max memory channels | 8 | 4 |
| Maximum memory bandwidth | 153.652 GB/s | 85.33 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by EPYC 7251 and Xeon D-2166NT.
| PCIe version | 3.0 | 3.0 |
| PCI Express lanes | 128 | 32 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Xeon D-2166NT outperforms EPYC 7251 by 1% based on our aggregated benchmark results.
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.
Benchmark coverage: 68%
Xeon D-2166NT outperforms EPYC 7251 by 1% in Passmark.
Advantages and disadvantages
| Performance score | 9.75 | 9.86 |
| Recency | 29 June 2017 | 7 February 2018 |
| Physical cores | 8 | 12 |
| Threads | 16 | 24 |
| Cost | $574 | $1005 |
| Power consumption (TDP) | 120 Watt | 85 Watt |
We couldn't decide between EPYC 7251 and Xeon D-2166NT. The differences in performance seem too small.
Should you still have questions on choice between EPYC 7251 and Xeon D-2166NT, ask them in Comments section, and we shall answer.
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