Xeon E5-4640 v2 vs EPYC 7642
Primary details
Comparing EPYC 7642 and Xeon E5-4640 v2 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 91 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 5.27 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 15.57 | no data |
| Architecture codename | Zen 2 (2017−2020) | no data |
| Release date | 7 August 2019 (5 years ago) | 1 January 2014 (10 years ago) |
| Launch price (MSRP) | $4,775 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 7642 and Xeon E5-4640 v2 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 | 48 (Octatetraconta-Core) | 10 (Deca-Core) |
| Threads | 96 | 20 |
| Base clock speed | 2.4 GHz | 2.2 GHz |
| Boost clock speed | 3.4 GHz | 2.7 GHz |
| Bus rate | no data | 8 GT/s |
| Multiplier | 23 | no data |
| L1 cache | 96K (per core) | no data |
| L2 cache | 512K (per core) | no data |
| L3 cache | 256 MB (shared) | 20 MB Intel® Smart Cache |
| Chip lithography | 7 nm, 14 nm | 22 nm |
| Die size | 192 mm2 | no data |
| Maximum core temperature | no data | 75 °C |
| Number of transistors | 4,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | - |
Compatibility
Information on EPYC 7642 and Xeon E5-4640 v2 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) | 4 |
| Socket | TR4 | FCLGA2011 |
| Power consumption (TDP) | 225 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7642 and Xeon E5-4640 v2. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® AVX |
| AES-NI | + | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | no data | + |
| PAE | no data | 46 Bit |
| Precision Boost 2 | + | no data |
Security technologies
EPYC 7642 and Xeon E5-4640 v2 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 EPYC 7642 and Xeon E5-4640 v2 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 EPYC 7642 and Xeon E5-4640 v2. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR3-800, DDR3-1066, DDR3-1333, DDR3-1600, DDR3-1866 |
| Maximum memory size | 4 TiB | 768 GB |
| Max memory channels | 8 | 4 |
| Maximum memory bandwidth | 204.763 GB/s | 59.7 GB/s |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by EPYC 7642 and Xeon E5-4640 v2.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 40 |
Pros & cons summary
| Recency | 7 August 2019 | 1 January 2014 |
| Physical cores | 48 | 10 |
| Threads | 96 | 20 |
| Chip lithography | 7 nm | 22 nm |
| Power consumption (TDP) | 225 Watt | 95 Watt |
EPYC 7642 has an age advantage of 5 years, 380% more physical cores and 380% more threads, and a 214.3% more advanced lithography process.
Xeon E5-4640 v2, on the other hand, has 136.8% lower power consumption.
We couldn't decide between EPYC 7642 and Xeon E5-4640 v2. We've got no test results to judge.
Should you still have questions on choice between EPYC 7642 and Xeon E5-4640 v2, ask them in Comments section, and we shall answer.
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