Ryzen 9 3900XT vs i5-8420T
Primary details
Comparing Core i5-8420T 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 | 24.87 |
| Market segment | Desktop processor | Desktop processor |
| Series | Intel Core i5 | AMD Ryzen 9 |
| Power efficiency | no data | 18.54 |
| Architecture codename | Coffee Lake (2017−2019) | Matisse 2 (2020) |
| Release date | 1 September 2018 (6 years ago) | 16 June 2020 (4 years ago) |
| Launch price (MSRP) | no data | $499 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i5-8420T 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 | 6 (Hexa-Core) | 12 (Dodeca-Core) |
| Threads | 6 | 24 |
| Base clock speed | 1.8 GHz | 3.8 GHz |
| Boost clock speed | 3.4 GHz | 4.7 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| L1 cache | 384 KB | 768 KB |
| L2 cache | 1.5 MB | 6 MB |
| L3 cache | 9 MB (shared) | 64 MB |
| Chip lithography | 14 nm | 7 nm, 12 nm |
| Die size | 126 mm2 | 74 mm2 |
| Maximum case temperature (TCase) | 72 °C | 95 °C |
| Number of transistors | no data | 3,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Core i5-8420T 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 (Uniprocessor) | 1 |
| Socket | 1151 | AM4 |
| Power consumption (TDP) | 35 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-8420T and Ryzen 9 3900XT. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-8420T and Ryzen 9 3900XT are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-8420T and Ryzen 9 3900XT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR4-3200 |
| Maximum memory size | 64 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 42.671 GB/s | 51.196 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics 630 | - |
Peripherals
Specifications and connection of peripherals supported by Core i5-8420T and Ryzen 9 3900XT.
| PCIe version | 3.0 | 4.0 |
Pros & cons summary
| Recency | 1 September 2018 | 16 June 2020 |
| Physical cores | 6 | 12 |
| Threads | 6 | 24 |
| Chip lithography | 14 nm | 7 nm |
| Power consumption (TDP) | 35 Watt | 105 Watt |
i5-8420T has 200% lower power consumption.
Ryzen 9 3900XT, on the other hand, has an age advantage of 1 year, 100% more physical cores and 300% more threads, and a 100% more advanced lithography process.
We couldn't decide between Core i5-8420T and Ryzen 9 3900XT. We've got no test results to judge.
Should you still have questions on choice between Core i5-8420T and Ryzen 9 3900XT, ask them in Comments section, and we shall answer.
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