Intel Core i5-10400 Buyer's Guide
Positioning and generation
The Intel Core i5-10400 sits in the modern mainstream tier on our site. It is a 10th Gen desktop processor based on the Comet Lake architecture. In our ranking it lands in the upper-middle part of the mainstream band: enough for most recent mainstream games, but not a high-end chip.
It is a desktop part with integrated graphics. That means the system can boot and show a picture without a graphics card, but the built-in graphics are only suitable for light everyday tasks. For gaming, pair it with a dedicated graphics card.
It uses the LGA1200 socket and is the first processor generation for that socket, so compatible motherboards need to be LGA1200 boards.
Key specs explained
This chip has 6 cores and 12 threads. For games, six cores give enough room for the main game thread, background tasks and the operating system, and most titles run smoothly on that count. The 12 threads help when a multithreaded game runs alongside streaming or recording software.
The Comet Lake architecture keeps it competitive within its class, particularly for single-core work and in terms of a mature, stable platform.
The integrated graphics are useful if you want to assemble a PC first and add a graphics card later. They handle desktop work, video playback and web browsing without extra hardware.
Suitable games and resolutions
Across the 439 games in our catalogue that have official requirements, this processor can be assessed against 416. Four of those fall below the official minimum, 52 only meet the minimum, 127 meet the recommended requirements, and 233 are well above the recommended level. Overall it handles most mainstream games comfortably.
Examples that meet the recommended requirements include Big Ambitions, IRON NEST: Heavy Turret Simulator, Fields of Mistria, MECCHA CHAMELEON, Gothic 1 Remake, Librarian: Tidy Up the Arcane Library!, Timberborn and MENACE. Titles that only reach the minimum include Yet Another Zombie Survivors, Big Walk, Scrap Mechanic, DragonSword : Awakening, Palworld and LEGO® Batman™: Legacy of the Dark Knight. Games below the minimum include ELDEN RING NIGHTREIGN, DOOM: The Dark Ages, Indiana Jones and the Great Circle and NEEDY STREAMER OVERLOAD, where the bottleneck may lie mainly outside the processor.
For resolution, 1080p is the sensible target when paired with a dedicated graphics card. Pushing to higher resolutions usually depends more on the graphics card than on the processor.
Compared with similar hardware
In our ranking, the Intel Core i5-10400F sits in the same tier position. The main difference is that the i5-10400F has no integrated graphics. If you plan to use a dedicated graphics card anyway, that difference rarely matters for gaming.
Above it, the Intel Core i7-8700K and Intel Core i7-9700F occupy higher tier positions. They suit buyers with a bigger budget who want more headroom.
Below it, the Intel Core i7-8700, AMD Ryzen 7 2700X and AMD Ryzen 5 3500X sit slightly lower in the ranking. The performance gap is small, so at similar prices the platform and used-market value decide which is the better deal.
Buying new or used
Check that the motherboard uses an LGA1200 socket and supports 10th Gen Intel processors. This chip is the first processor generation for that socket, and our data does not list any extra BIOS or chipset update requirement for it, but confirm the board specifications before buying.
The boxed version includes a basic stock cooler; tray units do not. Buy a separate cooler if you have a tray unit.
The processor uses a land grid design: the pins are in the motherboard socket, so take care not to touch them when installing it.
If buying used, check the chip for physical damage, ask the seller for proof of purchase and confirm the warranty status. New purchases are best made from retailers that offer a full warranty.
Upgrade advice
If the processor can no longer keep up with the games you want to play, an upgrade makes sense. Worth considering are the AMD Ryzen 5 5500, AMD Ryzen 7 3700X and Intel Core i3-12100F, which sit clearly higher in our ranking and are from newer generations.
Balance the upgrade against your graphics card and memory. If the graphics card is already the bottleneck, a new processor will bring limited benefit. If the graphics card is strong but the processor holds it back, upgrading the processor will show a clear improvement. Check memory capacity and speed at the same time so that no single part drags down the whole system.