i5-8400T vs Pentium 3558U
Aggregate performance score
Core i5-8400T outperforms Pentium 3558U by a whopping 622% based on our aggregate benchmark results.
Primary details
Comparing Pentium 3558U and Core i5-8400T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2761 | 1282 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 4.93 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Pentium | Intel Core i5 |
| Power efficiency | 4.10 | 12.68 |
| Architecture codename | Haswell (2013−2015) | Coffee Lake (2017−2019) |
| Release date | 1 January 2014 (10 years ago) | 2 April 2018 (6 years ago) |
| Launch price (MSRP) | $161 | $182 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Pentium 3558U and Core i5-8400T 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 | 2 (Dual-core) | 6 (Hexa-Core) |
| Threads | 2 | 6 |
| Base clock speed | 1.7 GHz | 1.7 GHz |
| Boost clock speed | 1.7 GHz | 3.3 GHz |
| Bus type | no data | DMI 3.0 |
| Bus rate | 5 GT/s | 4 × 8 GT/s |
| Multiplier | no data | 17 |
| L1 cache | 128 KB | 64K (per core) |
| L2 cache | 512 KB | 256K (per core) |
| L3 cache | 2 MB | 9 MB (shared) |
| Chip lithography | 22 nm | 14 nm |
| Die size | no data | 149 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Pentium 3558U and Core i5-8400T 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 (Uniprocessor) |
| Socket | FCBGA1168 | FCLGA1151 |
| Power consumption (TDP) | 15 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium 3558U and Core i5-8400T. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | 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 | + | + |
| Smart Response | - | no data |
| GPIO | + | no data |
| Smart Connect | + | no data |
| FDI | - | no data |
| AMT | 9.5 | no data |
| Matrix Storage | - | no data |
| HD Audio | + | no data |
| RST | + | no data |
Security technologies
Pentium 3558U and Core i5-8400T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Secure Key | + | + |
| MPX | - | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | - | + |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium 3558U and Core i5-8400T are enumerated here.
| AMD-V | + | - |
| VT-d | - | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium 3558U and Core i5-8400T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4-2666 |
| Maximum memory size | 16 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 42.671 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel HD Graphics for 4th Generation Intel Processors | Intel UHD Graphics 630 |
| Max video memory | no data | 64 GB |
| Quick Sync Video | + | + |
| Clear Video | + | + |
| Clear Video HD | - | + |
| Graphics max frequency | 1 GHz | 1.05 GHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Pentium 3558U and Core i5-8400T integrated GPUs.
| Number of displays supported | 3 | 3 |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
Graphics image quality
Maximum display resolutions supported by Pentium 3558U and Core i5-8400T integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2304@24Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 4096x2304@60Hz |
Graphics API support
APIs supported by Pentium 3558U and Core i5-8400T integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Pentium 3558U and Core i5-8400T.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | 10 | 16 |
| PCI support | - | no data |
| USB revision | 3.0 | no data |
| Total number of SATA ports | 2 | no data |
| Max number of SATA 6 Gb/s Ports | 2 | no data |
| Integrated IDE | - | no data |
| Number of USB ports | 4 | no data |
| Integrated LAN | - | no data |
| UART | + | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 0.65 | 4.69 |
| Integrated graphics card | 0.77 | 3.09 |
| Recency | 1 January 2014 | 2 April 2018 |
| Physical cores | 2 | 6 |
| Threads | 2 | 6 |
| Chip lithography | 22 nm | 14 nm |
| Power consumption (TDP) | 15 Watt | 35 Watt |
Pentium 3558U has 133.3% lower power consumption.
i5-8400T, on the other hand, has a 621.5% higher aggregate performance score, 301.3% faster integrated GPU, an age advantage of 4 years, 200% more physical cores and 200% more threads, and a 57.1% more advanced lithography process.
The Core i5-8400T is our recommended choice as it beats the Pentium 3558U in performance tests.
Be aware that Pentium 3558U is a notebook processor while Core i5-8400T is a desktop one.
Should you still have questions on choice between Pentium 3558U and Core i5-8400T, ask them in Comments section, and we shall answer.
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