Core i5-8400B: specs and benchmarks
Summary
Intel started Core i5-8400B sales 2 April 2018 at a recommended price of $182. This is a Coffee Lake architecture notebook processor primarily aimed at home systems. It has 6 cores and 6 threads, and is based on 14 nm manufacturing technology, with a maximum frequency of 4000 MHz and a locked multiplier.
Compatibility-wise, this is FCBGA1440 processor with a TDP of 65 Watt. It supports DDR4-2666 memory.
Primary details
Core i5-8400B processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Market segment | Laptop | |
| Series | Intel Core i5 | |
| Architecture codename | Coffee Lake (2017−2019) | |
| Release date | 2 April 2018 (6 years ago) | |
| Launch price (MSRP) | $182 | of 17,906 (Xeon Platinum 8280L) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 6 (Hexa-Core) | |
| Threads | 6 | |
| Base clock speed | 2.8 GHz | of 4.7 GHz (Ryzen 9 7900X) |
| Boost clock speed | 4 GHz | of 6.2 GHz (Core i9-14900KS) |
| Bus type | DMI 3.0 | |
| Bus rate | 4 × 8 GT/s | |
| Multiplier | 28 | of 42 (Core i7-7700K) |
| L1 cache | 384 KB | of 80 KB (EPYC 9965) |
| L2 cache | 1.5 MB | of 2 MB (Xeon 6980P) |
| L3 cache | 9 MB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 14 nm | of 3 nm (Core Ultra 9 285K) |
| Die size | 126 mm2 | |
| Maximum core temperature | 100 °C | of 110 °C (Core Ultra 9 185H) |
| 64 bit support | + | |
| Windows 11 compatibility | + |
Compatibility
Information on Core i5-8400B compatibility with other computer components and devices: 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) | of 8 (Xeon Platinum 8454H) |
| Socket | FCBGA1440 | |
| Power consumption (TDP) | 65 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Technologies and extensions
Technological capabilities and additional instructions supported by Core i5-8400B. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | |
| AES-NI | + | |
| AVX | + | |
| Enhanced SpeedStep (EIST) | + | |
| Turbo Boost Technology | 2.0 | |
| Hyper-Threading Technology | - | |
| Idle States | + | |
| Thermal Monitoring | + |
Security technologies
Processor technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | |
| EDB | + | |
| Secure Key | + | |
| MPX | + | |
| Identity Protection | + | |
| SGX | Yes with Intel® ME | |
| OS Guard | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| VT-d | + | |
| VT-x | + | |
| EPT | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Core i5-8400B's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR4-2666 | |
| Maximum memory size | 64 GB | of 6 TiB (EPYC 9654) |
| Max memory channels | 2 | of 12 (Xeon Platinum 9221) |
| Maximum memory bandwidth | 42.671 GB/s | of 460.8 GB/s (EPYC 9654) |
Graphics specifications
General parameters of a GPU integrated into Core i5-8400B.
| Integrated graphics card | Intel UHD Graphics 630 | |
| Max video memory | 64 GB | |
| Quick Sync Video | + | |
| Clear Video | + | |
| Clear Video HD | + | |
| Graphics max frequency | 1.05 GHz | |
| InTru 3D | + |
Graphics interfaces
Available interfaces and connections of Core i5-8400B's integrated GPU.
| Number of displays supported | 3 |
Graphics image quality
Maximum display resolutions supported by Core i5-8400B's integrated GPU, including resolutions over different interfaces.
| 4K resolution support | + | |
| Max resolution over HDMI 1.4 | 4096x2304@30Hz | |
| Max resolution over eDP | 4096x2304@60Hz | |
| Max resolution over DisplayPort | 4096x2304@60Hz |
Graphics API support
APIs supported by Core i5-8400B's integrated GPU, sometimes API versions are included.
| DirectX | 12 | |
| OpenGL | 4.5 |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 3.0 | of 5.0 (EPYC 9655P) |
| PCI Express lanes | 16 | of 128 (EPYC 9655P) |
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Core i5-8400B, according to our PC configuration statistics.
These are the fastest graphics cards for Core i5-8400B in our user configuration statistics. There is a total of 32 configurations using Core i5-8400B in our database.
