Ryzen 9 3900XT vs Atom E665C
Primary details
Comparing Atom E665C and Ryzen 9 3900XT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 268 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 25.01 |
| Market segment | Laptop | Desktop processor |
| Series | no data | AMD Ryzen 9 |
| Power efficiency | no data | 18.53 |
| Architecture codename | Stellarton (2010) | Matisse 2 (2020) |
| Release date | 22 November 2010 (14 years ago) | 7 July 2020 (4 years ago) |
| Launch price (MSRP) | no data | $499 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Atom E665C and Ryzen 9 3900XT 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) | 12 (Dodeca-Core) |
| Threads | 2 | 24 |
| Base clock speed | no data | 3.8 GHz |
| Boost clock speed | 1.3 GHz | 4.7 GHz |
| L1 cache | 64 KB (per core) | 96K (per core) |
| L2 cache | 512 KB (per core) | 512K (per core) |
| L3 cache | 0 KB | 64 MB |
| Chip lithography | 45 nm | 7 nm, 12 nm |
| Die size | 26 mm2 | 74 mm2 |
| Maximum case temperature (TCase) | no data | 95 °C |
| Number of transistors | 47 million | 3,800 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Atom E665C and Ryzen 9 3900XT 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 | 1 |
| Socket | Intel BGA1466 | AM4 |
| Power consumption (TDP) | 4 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom E665C and Ryzen 9 3900XT. 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 |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom E665C and Ryzen 9 3900XT are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom E665C and Ryzen 9 3900XT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR4-3200 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 51.196 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel GMA 600 | - |
Peripherals
Specifications and connection of peripherals supported by Atom E665C and Ryzen 9 3900XT.
| PCIe version | no data | 4.0 |
Pros & cons summary
| Recency | 22 November 2010 | 7 July 2020 |
| Physical cores | 1 | 12 |
| Threads | 2 | 24 |
| Chip lithography | 45 nm | 7 nm |
| Power consumption (TDP) | 4 Watt | 105 Watt |
Atom E665C has 2525% lower power consumption.
Ryzen 9 3900XT, on the other hand, has an age advantage of 9 years, 1100% more physical cores and 1100% more threads, and a 542.9% more advanced lithography process.
We couldn't decide between Atom E665C and Ryzen 9 3900XT. We've got no test results to judge.
Be aware that Atom E665C is a notebook processor while Ryzen 9 3900XT is a desktop one.
Should you still have questions on choice between Atom E665C and Ryzen 9 3900XT, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
