EPYC 7543 vs Pentium 1405
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 128 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 8.64 |
| Market segment | Server | Server |
| Series | no data | AMD EPYC |
| Power efficiency | no data | 6.63 |
| Designer | Intel | AMD |
| Manufacturer | no data | TSMC |
| Architecture codename | no data | Milan (2021−2023) |
| Release date | 1 April 2012 (14 years ago) | 15 March 2021 (5 years ago) |
| Launch price (MSRP) | no data | $3,761 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Basic parameters of Pentium 1405 and EPYC 7543: 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 | 2 (Dual-core) | 32 (Dotriaconta-Core) |
| Threads | 2 | 64 |
| Base clock speed | 1.2 GHz | 2.8 GHz |
| Boost clock speed | 1.8 GHz | 3.7 GHz |
| Bus rate | 0 GT/s | no data |
| Multiplier | no data | 28 |
| L1 cache | no data | 64 KB (per core) |
| L2 cache | no data | 512 KB (per core) |
| L3 cache | 5 MB Intel® Smart Cache | 256 MB (shared) |
| Chip lithography | 32 nm | 7 nm+ |
| Die size | no data | 8x 81 mm2 |
| Number of transistors | no data | 33,200 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Pentium 1405 and EPYC 7543 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 | FCLGA1356 | SP3 |
| Power consumption (TDP) | 40 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium 1405 and EPYC 7543. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | no data |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | + | no data |
Security technologies
Pentium 1405 and EPYC 7543 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium 1405 and EPYC 7543 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 Pentium 1405 and EPYC 7543. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-800, DDR3-1066 | DDR4-3200 |
| Maximum memory size | 375 GB | 4 TiB |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25 GB/s | 204.795 GB/s |
| 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 Pentium 1405 and EPYC 7543.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 24 | 128 |
Pros & cons summary
| Recency | 1 April 2012 | 15 March 2021 |
| Physical cores | 2 | 32 |
| Threads | 2 | 64 |
| Chip lithography | 32 nm | 7 nm |
| Power consumption (TDP) | 40 Watt | 225 Watt |
Pentium 1405 has 463% lower power consumption.
EPYC 7543, on the other hand, has an age advantage of 8 years, 1500% more physical cores and 3100% more threads, and a 357% more advanced lithography process.
We couldn't decide between Intel Pentium 1405 and AMD EPYC 7543. We've got no test results to judge.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
