EPYC 7643P vs Xeon E7-8891 v3
Aggregate performance score
EPYC 7643P outperforms Xeon E7-8891 v3 by a whopping 258% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 583 | 42 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 15.66 |
| Market segment | Server | Server |
| Power efficiency | 7.80 | 20.48 |
| Designer | Intel | AMD |
| Manufacturer | Intel | TSMC |
| Architecture codename | Haswell-EX (2015) | Milan (2021−2023) |
| Release date | 1 June 2015 (9 years ago) | 5 September 2023 (1 year ago) |
| Launch price (MSRP) | no data | $2,722 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E7-8891 v3 and EPYC 7643P 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 | 10 (Deca-Core) | 48 (Octatetraconta-Core) |
| Threads | 20 | 96 |
| Base clock speed | 2.8 GHz | 2.3 GHz |
| Boost clock speed | 3.5 GHz | 3.6 GHz |
| Bus rate | 9.6 GT/s | no data |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 256K (per core) | 512 KB (per core) |
| L3 cache | 45 MB (shared) | 256 MB (shared) |
| Chip lithography | 22 nm | 7 nm |
| Die size | 160 mm2 | 8x 81 mm2 |
| Maximum case temperature (TCase) | 79 °C | no data |
| Number of transistors | 1,400 million | 33,200 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Xeon E7-8891 v3 and EPYC 7643P 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 | 8 | 1 |
| Socket | FCLGA2011 | SP3 |
| Power consumption (TDP) | 165 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E7-8891 v3 and EPYC 7643P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| PAE | 46 Bit | no data |
| Precision Boost 2 | no data | + |
Security technologies
Xeon E7-8891 v3 and EPYC 7643P 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 Xeon E7-8891 v3 and EPYC 7643P 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 Xeon E7-8891 v3 and EPYC 7643P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1333/1600/1866, DDR3-1066/1333/1600 | DDR4 |
| Maximum memory size | 1.5 TB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 85 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon E7-8891 v3 and EPYC 7643P.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 32 | 128 |
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.
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
| Performance score | 13.47 | 48.19 |
| Recency | 1 June 2015 | 5 September 2023 |
| Physical cores | 10 | 48 |
| Threads | 20 | 96 |
| Chip lithography | 22 nm | 7 nm |
| Power consumption (TDP) | 165 Watt | 225 Watt |
Xeon E7-8891 v3 has 36.4% lower power consumption.
EPYC 7643P, on the other hand, has a 257.8% higher aggregate performance score, an age advantage of 8 years, 380% more physical cores and 380% more threads, and a 214.3% more advanced lithography process.
The AMD EPYC 7643P is our recommended choice as it beats the Intel Xeon E7-8891 v3 in performance tests.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
