EPYC 7443 vs Atom E645CT
Primary details
Comparing Atom E645CT and EPYC 7443 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 104 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 15.27 |
| Market segment | Laptop | Server |
| Series | no data | AMD EPYC |
| Power efficiency | no data | 16.86 |
| Architecture codename | Stellarton (2010) | Milan (2021−2023) |
| Release date | 22 November 2010 (14 years ago) | 15 March 2021 (3 years ago) |
| Launch price (MSRP) | no data | $2,010 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Atom E645CT and EPYC 7443 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 | 1 (Single-Core) | 24 (Tetracosa-Core) |
| Threads | 2 | 48 |
| Base clock speed | no data | 2.85 GHz |
| Boost clock speed | 1 GHz | 4 GHz |
| Multiplier | no data | 28.5 |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 512 KB (per core) | 512 KB (per core) |
| L3 cache | 0 KB | 128 MB (shared) |
| Chip lithography | 45 nm | 7 nm+ |
| Die size | 26 mm2 | 4x 81 mm2 |
| Number of transistors | 47 million | 16,600 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Atom E645CT and EPYC 7443 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 BGA1466 | SP3 |
| Power consumption (TDP) | 4 Watt | 200 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom E645CT and EPYC 7443. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Hyper-Threading Technology | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom E645CT and EPYC 7443 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom E645CT and EPYC 7443. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | 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 | Intel GMA 600 | N/A |
Peripherals
Specifications and connection of peripherals supported by Atom E645CT and EPYC 7443.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 22 November 2010 | 15 March 2021 |
| Physical cores | 1 | 24 |
| Threads | 2 | 48 |
| Chip lithography | 45 nm | 7 nm |
| Power consumption (TDP) | 4 Watt | 200 Watt |
Atom E645CT has 4900% lower power consumption.
EPYC 7443, on the other hand, has an age advantage of 10 years, 2300% more physical cores and 2300% more threads, and a 542.9% more advanced lithography process.
We couldn't decide between Atom E645CT and EPYC 7443. We've got no test results to judge.
Be aware that Atom E645CT is a notebook processor while EPYC 7443 is a server/workstation one.
Should you still have questions on choice between Atom E645CT and EPYC 7443, ask them in Comments section, and we shall answer.
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