EPYC 9455 vs Atom x3-C3405
Primary details
Comparing Atom x3-C3405 and EPYC 9455 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | 3x Intel Atom | no data |
| Architecture codename | Silvermont (2015) | Turin (2024) |
| Release date | no data | 10 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $5,412 |
Detailed specifications
Atom x3-C3405 and EPYC 9455 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 | 4 (Quad-Core) | 48 (Octatetraconta-Core) |
| Threads | 4 | 96 |
| Base clock speed | 1.2 GHz | 3.15 GHz |
| Boost clock speed | 1.4 GHz | 4.4 GHz |
| L1 cache | no data | 80 KB (per core) |
| L2 cache | 2 MB | 1 MB (per core) |
| L3 cache | 0 KB | 192 MB (shared) |
| Chip lithography | 28 nm | 4 nm |
| Die size | no data | 6x 70.6 mm2 |
| Number of transistors | no data | 49,890 million |
| 64 bit support | + | + |
Compatibility
Information on Atom x3-C3405 and EPYC 9455 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 | no data | 2 |
| Socket | no data | SP5 |
| Power consumption (TDP) | no data | 300 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom x3-C3405 and EPYC 9455. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | - | + |
| GPIO | 5 x I2C | no data |
| Precision Boost 2 | no data | + |
Security technologies
Atom x3-C3405 and EPYC 9455 technologies aimed at improving security, for example, by protecting against hacks.
| Secure Boot | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom x3-C3405 and EPYC 9455 are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom x3-C3405 and EPYC 9455. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | 1x32 LPDDR2/3 1066 | DDR5 |
| Maximum memory size | 2 GB | no data |
| Max memory channels | 1 | no data |
| Maximum memory bandwidth | 4.2 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Graphics interfaces
Available interfaces and connections of Atom x3-C3405 and EPYC 9455 integrated GPUs.
| Number of displays supported | 1 | no data |
| MIPI-DSI | + | no data |
Graphics image quality
Maximum display resolutions supported by Atom x3-C3405 and EPYC 9455 integrated GPUs, including resolutions over different interfaces.
| Max resolution over eDP | 1280x800 | no data |
Graphics API support
APIs supported by Atom x3-C3405 and EPYC 9455 integrated GPUs, sometimes API versions are included.
| DirectX | 9.3 | no data |
| OpenGL | ES 3.0 | no data |
Peripherals
Specifications and connection of peripherals supported by Atom x3-C3405 and EPYC 9455.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 128 |
| USB revision | 2.0 OTG | no data |
| Number of USB ports | 1 | no data |
| UART | 7 x USIF configurable | no data |
Pros & cons summary
| Physical cores | 4 | 48 |
| Threads | 4 | 96 |
| Chip lithography | 28 nm | 4 nm |
EPYC 9455 has 1100% more physical cores and 2300% more threads, and a 600% more advanced lithography process.
We couldn't decide between Atom x3-C3405 and EPYC 9455. We've got no test results to judge.
Be aware that Atom x3-C3405 is a notebook processor while EPYC 9455 is a server/workstation one.
Should you still have questions on choice between Atom x3-C3405 and EPYC 9455, ask them in Comments section, and we shall answer.
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