i9-9990XE vs i5-8420T
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 417 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 2.33 |
| Market segment | Desktop processor | Desktop processor |
| Series | Intel Core i5 | Intel Core i9 |
| Power efficiency | no data | 2.84 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Coffee Lake (2017−2019) | Skylake (server) (2017−2018) |
| Release date | 1 September 2018 (7 years ago) | 19 October 2018 (7 years ago) |
| Launch price (MSRP) | no data | $2,800 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core i5-8420T and Core i9-9990XE 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) | 14 (Tetradeca-Core) |
| Threads | 6 | 28 |
| Base clock speed | 1.8 GHz | 4 GHz |
| Boost clock speed | 3.4 GHz | 5.1 GHz |
| Bus type | DMI 3.0 | DMI 3.0 |
| Bus rate | 4 × 8 GT/s | 4 × 8 GT/s |
| Multiplier | no data | 40 |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 256K (per core) | 1 MB (per core) |
| L3 cache | 9 MB (shared) | 19.25 MB (shared) |
| Chip lithography | 14 nm | 14 nm |
| Die size | 126 mm2 | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Core i5-8420T and Core i9-9990XE 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 | 2066 |
| Power consumption (TDP) | 35 Watt | 255 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-8420T and Core i9-9990XE. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| TSX | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-8420T and Core i9-9990XE are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-8420T and Core i9-9990XE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR4 Quad-channel |
| Maximum memory size | 64 GB | 128 GB |
| Max memory channels | 2 | 4 |
| Maximum memory bandwidth | 42.671 GB/s | 85.33 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics 630 | N/A |
Peripherals
Specifications and connection of peripherals supported by Core i5-8420T and Core i9-9990XE.
| PCIe version | 3.0 | 3.0 |
| PCI Express lanes | no data | 44 |
Pros & cons summary
| Recency | 1 September 2018 | 19 October 2018 |
| Physical cores | 6 | 14 |
| Threads | 6 | 28 |
| Power consumption (TDP) | 35 Watt | 255 Watt |
i5-8420T has 628.6% lower power consumption.
i9-9990XE, on the other hand, has an age advantage of 1 month, and 133.3% more physical cores and 366.7% more threads.
We couldn't decide between Intel Core i5-8420T and Intel Core i9-9990XE. 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.
