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The Intel Core i5-8400 is a 6-core, 8th Gen processor with a base clock of 2.8 GHz and turbo boost up to 3.8 GHz, designed for efficient 65W power consumption. Ideal for mid-range gaming and professional multitasking, it pairs seamlessly with B360 motherboards and high-end GPUs to deliver smooth 1080p gaming experiences. Pre-applied thermal paste and straightforward installation make it a top choice for both first-time builders and seasoned users seeking reliable, affordable performance.





| ASIN | B0759FGJ3Q |
| Are Batteries Included | No |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | 172,616 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 613 in CPUs |
| Brand | Intel |
| Colour | Multi-Colour |
| Computer Memory Type | DDR4 SDRAM |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,926) |
| Date First Available | 5 Oct. 2017 |
| Guaranteed software updates until | unknown |
| Item Weight | 60 g |
| Item model number | BX80684I58400 |
| Lithium Battery Energy Content | 4.9 Watt Hours |
| Lithium Battery Packaging | Batteries contained in equipment |
| Lithium Battery Weight | 0.85 Grams |
| Manufacturer | Intel |
| Memory Clock Speed | 2800 MHz |
| Number Of Lithium Ion Cells | 2 |
| Number of USB 2.0 Ports | 1 |
| Processor Brand | Intel |
| Processor Count | 6 |
| Processor Socket | LGA 1151 |
| Processor Speed | 2.8 GHz |
| Processor Type | Core i5 |
| Product Dimensions | 11.61 x 7.01 x 10.11 cm; 60 g |
| Series | INTEL BX80684I38300 |
| Wattage | 65 |
F**.
Perfect for high end (but still fairly cheap) gaming when paired with a B360 motherboard
Great CPU overall, six cores with an all core boost clock of 3.8 GHz makes it an amazing chip for more affordable gaming even with a more high end graphics card. I have it paired with a GTX 1070 for max. settings, 75Hz gaming at 1080p and this CPU handles it very well, reaching basically 100% GPU usage in most games (other than GTA V). The only problem so far is that in certain games, such as The Witcher 3, there is a fair bit of stuttering, although I'm almost certain that is down to the fact that I'm running a single 8GB stick of DDR4 memory, which I plan to add another stick to very soon to run in dual channel mode to reduce the CPU usage and stuttering as well as increase my FPS. The only other minor problem that I have had is with the stock cooler that Intel supplies, the problem that I have with it isn't with performance or noise, but with aesthetics, in my opinion it just doesn't look very nice in a windowed case which is why I replaced it with a Hyper 212X from Cooler Master, not only making my system look a lot nicer, but also dropping thermals whilst gaming by about 10C (roughly 65 to 55C). other than these two easily remedied problems that weren't even caused by the CPU itself, it is almost perfect and once I have upgraded to dual channel memory I think it will be even better delivering a smooth gaming experience even when paired with a GPU such as the GTX 1070.
N**K
Good, solid CPU
I chose the core i5-8400 for my gaming PC, as it was a mid-range processor, and I wasn't planning on doing any overclocking for my build (I'm a first time builder, so I don't want to get into overclocking just yet). Thermal paste was already applied to the bottom of the supplied CPU fan, and installation instructions were very easy to follow. So far I have had no issues, and my PC is working very well.
S**E
Prices are a joke
I have not used this chip yet but was so frustrated to get it after 3 month that I could not resist to leave a comment now. Amazon is a joke. The price go up and down by 300%. I had to use the 3rd party site to monitor the prices and buy it when it was reasonably cheap. A rich company who has put millions of business out of business is play game with people's hard earned income. God knows why one person needs so much money. sickness I guess. The first thing I noticed was the box. Suppose to protect this tiny chip which is the most expensive and important part of the computer. Yet it was placed at the top of the box with a plastic cover but the cheap 50p cooler was well protected under it. It is probably designed by god, like he placed the testicle outside the box in a vulnerable position. Really stupid idea. After a lot of research I chose to get a i5-8400 because it has enough cores (6) and has a 2.8 GHz base clock speed. Do not be fooled by the low Hz as it is deliberately set low to make 8600K good. If the processor does not need the speed it is better to stay low because the CPU consumes the most energy. In fact I do not put the heater on during winter and just use my PC to keep the room warm. I used the laptop only for couple of day and my room was freezing. The Hz can go up to 3.9 on a single core (if you have a good cooling) which is near 8600K at 4.3Hz. I do not play games but I am a software engineer and write programmes so I need a good CPU. This is to replace my Intel Core Due which is 1.8Hz maxes to 2.8Hz. Since you cannot OC this you do not need to go for high end motherboard such as 300 series. I got a 370 MB because it has connections and other feathers I liked. It came with a fan you can find a kinder egg so I invested in a good cooling system.
O**H
Powerful, future proof and affordable!
The I5 8400 is a perfect CPU for gaming. Packing speeds of 2.80 GHz speed and up to 4.00 GHz (Turbo boost), you cannot go wrong here. Its brilliant for high end titles and with its 6 cores it is sure to be future proof and sustain you for gaming for the next years. It is only slightly less powerful than an I7 7700K but is £100 cheaper. What else could you ask for? As a proud gamer I highly recommend it!
D**Y
Excellent value for money for such a powerful CPU.
This as at May 2018 is probably the best value to performance processor in the new 8th generation range. It happily plays Farcry 5 in ultra mode on my PC and it also came with a stock heatsink and fan. I chose to use a higher quality copper heatsink and a very large, quiet fan for cooling rather than using the stock items, but it is nice to have them included as some people prefer the basic, albeit noisy convenience of stock. I can honestly say that in my system this runs extremely cool, and even after having played intensive games for over an hour the heatsink was still cool as I tested my system by leaving the side panel off so I could feel any heat absorbed into the heatsink. I always by Intel processors rather than AMD, but that is just my preference.
R**N
Good CPU for its time
Easy to install. Comes with cooler which is good to keep, but can get aftermarket one of you wish. Good value but better on the market these days.
J**N
Good cpu bad cooler
Really good cpu for gaming big upgrade over my i3 6100. Paired with my 1060 6gb it's a beast runs 1080p at ultra settings 60fps. However, the stock cooler you get is a look annoying and loud. It buzzes and has done my head in so much over the past few days that I've ordered a new cooler. Got mine at 170 pound so was a steal.
B**6
Intel Core i5-8400 cpu
I used this with a Gigabyte H31M S2H motherboard in a PC that I put together. It was easy to fit, however I did practice by installing a similar cpu on an older motherboard. The method was the same and easy to do. Watching Carey Holzman's Youtube videos helped. I have no interest in gaming so I cannot help with stars for gaming. The supplied fan was fairly quiet - no doubt, spending loadsa cash on a better fan would help, but the one supplied was OK for me and was easy to fit.
T**O
問題なしです
L**S
Desde marzo se me antojó cambiarme de componentes en mi ordenador. Tenía anteriormente: -CPU: Intel Core i5 4440 3.1GHz -GPU: Asus Strix RX 470 OC 4GB -Placa: Gigabyte B85M-D3H -RAM: 16GB DDR3 1866MHz -Fuente: Aerocool KCAS Bronze 600W Lo único que quería cambiar fue la CPU, la placa y la RAM. Ya que como mi anterior PC tenía Intel de 4ª generación, CPU de DDR3, y placa con socket de 1150. Para saltar a la nueva generación, tenía que cambiar la CPU, que además, había que cambiar la placa, y había que cambiar la RAM. Opté por el Intel Core i5 8400 de 2.8GHz, la RAM era Ballistix Sport LT de 16GB DDR4 de 2400MHz (8x2) y la placa era Gigabyte B360M-DS3H. Con todo esto, manteniendo la gráfica y la fuente de alimentación, obtuve unos mejores resultados tanto en embalaje de productos, como de calidad de estos mismos. Del i5 4440 al i5 8400 ha sido como un 30% o más de mejora, así como la mejora de la RAM al pasar de 1866MHz y DDR3 a los 2400MHz y DDR4. La CPU si bien a mí se me calentaba unas pocas veces debido a las múltiples tareas que hice los primeros días (instalar programas, juegos, etc), el rendimiento es indiscutible que es de calidad-precio. Por menos de 200 € tienes una buena CPU. Con respecto a los juegos, probando The Witcher III: Wild Hunt en Alto-Ultra mantuve alrededor de los 60 y los 75fps (activé la V-Sync porque el tearing del juego me molestaba, y mi monitor era de máximo 75Hz), y los resultados eran sobresalientes, sino que más destacables. Si queréis montaros un buen PC para jugar, el i5 8400 es una buena inversión para lo que vale, podéis jugar a prácticamente todo con este procesador. Se aprovechan muy bien los 6 núcleos y 6 hilos que tiene, con frecuencia de base de 2.8GHz y turbo de hasta 4.0GHz.
F**I
Estoy MUY SATISFECHO con este procesador! El desempeño es poco mejor que un core i7 7700k, que hasta el año pasado fué uno de los mejores de Intel. Además, el i5 8400 es mucho más barato y consume menos energía. Este procesador, de la mano con una buena tarjeta gráfica, te dejará correr cualquier juego con las opciones de gráficos al máximo. En la caja vienen el procesador y un ventilador de fábrica, el cual será suficiente ya que a este procesador no se le puede hacer overclocking. Es importante recordar que para usarlo es indispensable tener una tarjeta madre de serie 300 (busca que la tarjeta diga Z370, B360 o H310). No por nada es en procesador Coffee Lake mejor vendido.
C**S
At first I was thinking of getting the overclockable version, but coming from a potato laptop with a 4th gen i7 processor, I was okay with getting this version i5-8400, I like it, it's snappy fast, all works good so far, and i'm happy to say that, because I've never built a PC before and I just did 2 days ago by watching youtube tutorials lol, but I realized that if I wanted the i5-8600k I needed to get a more expensive motherboard, so I ended up saving lots of money to invest in the GPU and other peripherals. ----------------------------------------------------------------------------------------------------------------------------------------- UPDATE 2/25/2019 : After about a month of using my PC with this processor, I haven't had any issues with it! installed Extreme utility Tool for intel to verify the temps of the processor, Playing fornite after 1 - 3 hours, it has not exceeded more than 57 Degrees, so it was always pretty cool, I'm using the CPU cooler Deepcool Gammaxx 400 white LED. CPU usage never exceeded 75% I believe also while playing/rendering, used this processor with the Asus dual GTX 1060 6GB + 16GB 2400mhz Ram. For an 8 minute video in 1080p 60fps format, it took about 10-20 minutes of rendering ( of course load is both on the CPU and GPU during this process) , paired with the board : B360M DS3H + SSD Adata 240GB, the PC boots in 13-16 seconds from the moment I press the power on button on my computer. I am happy I went with this processor instead of the i3-8100 ( which I was thinking of at first ) but my friend suggested an i5 of the 8th gen at least for basic future proofing . ( BTW ) my YT channel is : Zealous Pumpkin check me out ! I do meme edits and funny videos about fortnite lol! ----------------------------------------------------------------------------------------------------------------------------------------- UPDATE 4/17/2019: 3 months in using this beautiful underrated CPU! This thing is really nice , For any interested gamer , Fortnite 1080p Maxed out an i5-8400 CPU + GTX 1060 6GB will play from 60-90fps , I cap my fps to 120 with my custom settings and with unlimited fps, it can reach 200fps+ sometimes and minimum 120. this processor with the right cooler, has never gone over 60C for me , and I live in quite a hot country btw. got this for 179.99$ before black friday and have never seen it go lower than that ( Just once on May-August 2018) for the same price but never again , so it was a great deal.
A**E
Best processor for the budget gamers. You cannot overclock it but you don't have to overclock it. This processor can do everything. Runs on 3.8 GHz. Smooth as butter. I can stream any game with no lag or stutter. If you want to overclock your processor then go for the unlocked processors such as 8600k. But for me, this does the job without the need for overclocking it.
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