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We compared two desktop CPUs: the 2.8 GHz Intel Core i5 8400 with 6-cores against the 3.6 GHz i3 9100F with 4-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.
- Review
- Differences
- Performance
- Specs
- Comments
What are the key differences between 9100F and 8400
Advantages of Intel Core i5 8400
- Supports up to 128 GB DDR4-2666 RAM
- Has 2 more physical cores
- Has 3 MB larger L3 cache size
- Includes an integrated GPU Intel UHD Graphics 630
- Around 4.1 GB/s [11%] higher theoretical memory bandwidth
Advantages of Intel Core i3 9100F
- Newer - released 1-year and 7-months later
- 5% higher Turbo Boost frequency [4.2 GHz vs 4 GHz]
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Full technical specification of Intel Core i5 8400 and i3 9100F
| Vendor | Intel | Intel |
| Released | October 5, 2017 | April 23, 2019 |
| Type | Desktop | Desktop |
| instruction set | x86-64 | x86-64 |
| Codename | Coffee Lake | Coffee Lake |
| Model number | i5-8400 | i3-9100F |
| Socket | LGA-1151 | LGA-1151 |
| Integrated GPU | UHD Graphics 630 | No |
| Cores | 6 | 4 |
| Threads | 6 | 4 |
| Base Frequency | 2.8 GHz | 3.6 GHz |
| Turbo Boost Frequency | 4 GHz | 4.2 GHz |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 28x | 36x |
| Bus Bandwidth | 8 GT/s | 8 GT/s |
| L1 Cache | 64K [per core] | 64K [per core] |
| L2 Cache | 256K [per core] | 256K [per core] |
| L3 Cache | 9MB [shared] | 6MB [shared] |
| Unlocked Multiplier | No | No |
| Fabrication process | 14 nm | 14 nm |
| TDP | 65 W | 65 W |
| Max. temperature | 100°C | 100°C |
| Integrated Graphics | Intel UHD Graphics 630 | - |
| GPU Base Clock | 350 MHz | - |
| GPU Boost Clock | 1050 MHz | - |
| Shading Units | 192 | - |
| TMUs | 24 | - |
| ROPs | 3 | - |
| Execution Units | 24 | - |
| TGP | 15 W | - |
| Max. Resolution | 4096x2304 - 60 Hz | - |
| Memory types | DDR4-2666 | DDR4-2400 |
| Memory Size | 128 GB | 64 GB |
| Max. Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | 41.6 GB/s | 37.5 GB/s |
| ECC Support | No | Yes |
So which CPU will you choose: Intel Core i3 9100F or i5 8400?
Intel Core i3-9100F hoạt động với 4 lõi và 4 luồng CPU. Nó chạy ở 4.20 GHz base 3.80 GHz tất cả các lõi trong khi TDP được đặt ở 65 W .Bộ xử lý được gắn vào ổ cắm CPU LGA 1151 Phiên bản này bao gồm 6.00 MB bộ nhớ đệm L3 trên một chip, hỗ trợ các kênh bộ nhớ 2 DDR4-2400 và các tính năng của 3.0 PCIe Gen 16 . Tjunction giữ dưới 100 °C độ C. Đặc biệt, Coffee Lake S Refresh được cải tiến với 14 nm và hỗ trợ VT-x, VT-x EPT, VT-d . Sản phẩm đã được ra mắt vào Q2/2019
Mini Review
Intel Core i3-9100F advantages
Intel Core i5-8400 advantages
i3-9100F vs i5-8400 specifications comparison
The charts below show the difference between i5-8400 and i3-9100F most important characteristics. These features, together with an IPC [instructions per cycle] number, determine how well a processor performs. The "Operating frequency" chart uses dark color to represent base frequency, while lighter area is for additional frequency, provided by Turbo feature. Darker area on the "On-chip cache" graph is for the On-chip L2 cache. Lighter area is for the L3 cache cache. Although the L3 cache cache is usually larger than the On-chip L2 cache, it is always slower.
The number of cores / threads
Higher is better |
Operating frequency
Higher is better |
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| - Intel Core i3-9100F - Intel Core i5-8400 | |||||||||||||||||||
On-chip L2 + L3 cache
Higher is better |
Thermal Design Power
Lower is better |
Detailed side by side comparison of Intel Core i3-9100F vs Intel Core i5-8400 specs can be found in the Specifications section below. Even more detailed comparison of internal features of both microprocessors you will find in the CPUIDs section.
Pros and Cons summary
| Core i3-9100F | Core i5-8400 | |
| General recommendations: | General recommendations: | |
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Drawbacks: |
Drawbacks: |
Similar processors
| Core i3-9100F | Core i5-8400 | |
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Intel i5-8400 vs i3-9100E |
Intel i3-9100F vs i5-8400T |
Similar CPUs use the same socket and architecture as Intel Core i3-9100F and Core i5-8400, but their performance and other characteristics are slightly different.