Ryzen 9 3900X vs i7-8670
Primary details
Comparing Core i7-8670 and Ryzen 9 3900X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 269 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 20.87 |
| Market segment | Desktop processor | Desktop processor |
| Series | Intel Core i7 | AMD Ryzen 9 |
| Power efficiency | no data | 15.55 |
| Architecture codename | Coffee Lake (2017−2019) | Matisse (Zen 2) (2019−2020) |
| Release date | 1 January 2018 (6 years ago) | 7 July 2019 (5 years ago) |
| Launch price (MSRP) | no data | $499 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i7-8670 and Ryzen 9 3900X 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 | 12 | 24 |
| Base clock speed | 3.1 GHz | 3.8 GHz |
| Boost clock speed | 4.4 GHz | 4.6 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| L1 cache | 64K (per core) | 96K (per core) |
| L2 cache | 256K (per core) | 512K (per core) |
| L3 cache | 12 MB (shared) | 64 MB |
| Chip lithography | 14 nm | 7 nm, 12 nm |
| Die size | 149 mm2 | no data |
| Maximum core temperature | no data | 95 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 19,200 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Core i7-8670 and Ryzen 9 3900X 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 (Uniprocessor) |
| Socket | 1151 | AM4 |
| Power consumption (TDP) | 65 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-8670 and Ryzen 9 3900X. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| TSX | + | - |
| SIPP | + | - |
| Precision Boost 2 | no data | + |
Security technologies
Core i7-8670 and Ryzen 9 3900X technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-8670 and Ryzen 9 3900X 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 i7-8670 and Ryzen 9 3900X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR4 Dual-channel |
| Maximum memory size | 64 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 42.671 GB/s | 51.196 GB/s |
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 i7-8670 and Ryzen 9 3900X.
| PCIe version | 3.0 | no data |
Pros & cons summary
| Recency | 1 January 2018 | 7 July 2019 |
| Physical cores | 6 | 12 |
| Threads | 12 | 24 |
| Chip lithography | 14 nm | 7 nm |
| Power consumption (TDP) | 65 Watt | 125 Watt |
i7-8670 has 92.3% lower power consumption.
Ryzen 9 3900X, on the other hand, has an age advantage of 1 year, 100% more physical cores and 100% more threads, and a 100% more advanced lithography process.
We couldn't decide between Core i7-8670 and Ryzen 9 3900X. We've got no test results to judge.
Should you still have questions on choice between Core i7-8670 and Ryzen 9 3900X, 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.
