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| Cores | 6 |
|---|---|
| Threads | 6 |
| Base Frequency | 2.90 GHz |
| Max Turbo Frequency | 4.10 GHz |
| Cache | 9 MB Intel Smart Cache |
| Bus Speed | 8 GT/s DMI3 |
| TDP | 65 W |
| Instruction Set | 64-bit |
| Socket | LGA 1151 (Version 2) |
| Memory Types | DDR4-2666 |
| Max Memory Channels | 2 |
| Integrated Graphics | Intel UHD Graphics 630 |
Engineer's Note: The Intel Core i5-9400 is a desktop processor with 6 cores / 6 threads, a 2.90 GHz base clock boosting to 4.10 GHz, and 9 MB Intel Smart Cache of cache. It is a solid fit for light content creation and media playback, and its integrated Intel UHD Graphics 630 handles display output without a discrete graphics card. At 65 W, it runs cool on standard boxed coolers. The LGA 1151 (Version 2) socket keeps it compatible with a wide range of mainstream boards.
1. Value positioning: as a previous-generation desktop part, the Intel Core i5-9400 delivers proven stability at a fraction of current-flagship pricing. For fleets of office machines, labs, and home builds where budgets are real constraints, that price/performance ratio is the whole argument.
2. 65 W rated TDP: desktop cooling handles this comfortably — quiet air coolers suffice, no liquid loop needed. It also keeps the whole-system power draw friendly for office environments running 8+ hours a day.
3. Memory support: DDR4-2666. Dual-channel population (two matched sticks) is the single cheapest performance upgrade on a desktop platform — match module pairs for full bandwidth.
4. LGA 1151 (Version 2) platform: the socket defines your upgrade path. Boards for this platform are widely available at every price point, and the ecosystem (BIOS support, coolers, memory compatibility) is mature — low-risk territory for system builders.
5. Integrated Intel UHD Graphics 630: display output works out of the box without a discrete GPU — two monitors for office work, hardware-accelerated video playback, and Quick Sync for fast media encoding. Many business desktops run exactly this configuration.
For light content creation and media playback, the Intel Core i5-9400 gets the fundamentals right: enough cores for daily multitasking, turbo headroom for the moments that need speed, and integrated graphics that keep build costs down. Every unit is tested before shipping, and bulk orders for office fleets get consolidated pricing.
Q: Can I use this in a small office fleet of desktops?
A: Yes — this is a common choice for business desktop refreshes. It balances daily productivity performance with low power draw and proven stability. Ask for fleet pricing on multi-unit orders.
Q: Is this processor good for gaming?
A: It handles mainstream gaming well when paired with a reasonable graphics card — the CPU is rarely the bottleneck at 1080p for most titles. For competitive high-refresh gaming, a higher-clocked part is worth considering; tell us your games and budget and we will recommend accordingly.
Q: Is it new or refurbished? What warranty applies?
A: We offer both new and tested refurbished units — condition is shown on each listing. All processors include a one-year warranty and pass functional testing (boot, all cores, memory controller) before dispatch.
Q: Does this CPU include a cooler?
A: At 65 W, a boxed cooler is sufficient, but coolers are not always included with these units — check the listing or ask us. Any aftermarket cooler rated for 65 W also works.
Q: Is the Intel Core i5-9400 compatible with my motherboard?
A: The Intel Core i5-9400 uses the LGA 1151 (Version 2) socket. Check that your board has that socket and lists this processor in its CPU support list — a BIOS update may be needed on some boards. Share your motherboard model with us and we will confirm compatibility.
