i3-8121U vs i7-4578U
Aggregate performance score
Core i3-8121U outperforms Core i7-4578U by a considerable 42% based on our aggregate benchmark results.
Primary details
Comparing Core i7-4578U and Core i3-8121U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1937 | 1685 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Core i3 |
| Power efficiency | 6.59 | 17.41 |
| Architecture codename | Haswell (2013−2015) | Coffee Lake-U (2018−2019) |
| Release date | 21 July 2014 (10 years ago) | 15 May 2018 (6 years ago) |
| Launch price (MSRP) | $426 | no data |
Detailed specifications
Core i7-4578U and Core i3-8121U 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) | 2 (Dual-core) |
| Threads | 4 | 4 |
| Base clock speed | 3 GHz | 2.2 GHz |
| Boost clock speed | 3.5 GHz | 3.2 GHz |
| Bus type | no data | OPI |
| Bus rate | 5 GT/s | 4 GT/s |
| Multiplier | no data | 22 |
| L1 cache | 128 KB | 128 KB |
| L2 cache | 512 KB | 512 KB |
| L3 cache | 4 MB | 4 MB (shared) |
| Chip lithography | 22 nm | 10 nm |
| Die size | 181 mm2 | 123 mm2 |
| Maximum core temperature | 100 °C | 105 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 1300 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Core i7-4578U and Core i3-8121U 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 | Intel BGA1440 |
| Power consumption (TDP) | 28 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-4578U and Core i3-8121U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | - |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | - |
| Speed Shift | no data | + |
| My WiFi | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| Smart Response | no data | + |
| Demand Based Switching | no data | - |
| FDI | + | no data |
| HD Audio | no data | + |
| RST | no data | + |
Security technologies
Core i7-4578U and Core i3-8121U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
| Secure Key | + | + |
| MPX | - | + |
| Identity Protection | + | - |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-4578U and Core i3-8121U are enumerated here.
| AMD-V | + | - |
| VT-d | + | + |
| VT-x | + | + |
| VT-i | no data | - |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-4578U and Core i3-8121U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 |
| Maximum memory size | 16 GB | 32 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 38.397 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Iris Graphics 5100 | Iris Pro Plus |
| Max video memory | 2 GB | no data |
| Quick Sync Video | + | - |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.2 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-4578U and Core i3-8121U integrated GPUs.
| Number of displays supported | 3 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| VGA | + | no data |
Graphics image quality
Maximum display resolutions supported by Core i7-4578U and Core i3-8121U integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 3200x2000@60Hz | no data |
| Max resolution over DisplayPort | 3200x2000@60Hz | no data |
| Max resolution over VGA | N/A | no data |
Graphics API support
APIs supported by Core i7-4578U and Core i3-8121U integrated GPUs, sometimes API versions are included.
| DirectX | 11.2/12 | no data |
| OpenGL | 4.3 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-4578U and Core i3-8121U.
| PCIe version | 2 | 3.0 |
| PCI Express lanes | 12 | 16 |
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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Performance score | 1.95 | 2.76 |
| Recency | 21 July 2014 | 15 May 2018 |
| Chip lithography | 22 nm | 10 nm |
| Power consumption (TDP) | 28 Watt | 15 Watt |
i3-8121U has a 41.5% higher aggregate performance score, an age advantage of 3 years, a 120% more advanced lithography process, and 86.7% lower power consumption.
The Core i3-8121U is our recommended choice as it beats the Core i7-4578U in performance tests.
Should you still have questions on choice between Core i7-4578U and Core i3-8121U, ask them in Comments section, and we shall answer.
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