Should i buy an intel core i5 8400 cpu?

Normally we’d be falling head over heels for the new K-series i5 in an hãng sản xuất intel CPU generation, but the bộ vi xử lý core i5 8400 has turned out lớn be the best CPU that’s come out of Coffee Lake. It’s also the only hãng intel processor we’d even think to lớn consider instead of the mid-price AMD Ryzen competition.

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The plucky i5 8400 has been the surprise package of the Coffee Lake CPUs. While the K-series bộ vi xử lý core i7 8700K might have grabbed all the headlines, with its Ryzen-battling multi-threaded performance & 5.2GHz overclocking chops, it’s the i5 8400 which has really turned out khổng lồ be the best intel CPU for gamers. That means we have a battle royale going down between this và the Ryzen 5 2600 for the mighty PC gaming dollar.

It’s normal for the vi xử lý core i5 chips in a new generation lớn be the ones we kết thúc up recommending for gamers – historically, the HyperThreading tech only offers a little extra gaming performance with the core i7 – but this is the first time I’ve recommended ditching the K-series processors in their entirety.


The vi xử lý core i5 8400 is also one of the most affordable Coffee Lake chips you can actually buy right now, thankfully it’s also the best one for purestrain gamers. Itused lớn be far more of a bargain, unfortunately the 14nm CPU shortage has pushed its pricing well above $200 & beyond the budget costings of the Ryzen 5 chips.

The AMD Ryzen 2 CPUs traditionally had lớn compete against the 8400 on both the gaming performance and price sides of the equation, but the darlingRyzen 5 2600manages khổng lồ offer serious computational chops và a level of gaming performance that puts it right up there with Intel’s best, and now for a lot less cash.

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Intel chip core i5 8400 specs

The bộ vi xử lý core i5 8400 is still a six-core CPU, but without HyperThreading it remains stuck at six threads of processing power. It’s also been saddled with a relatively low 2.8GHz base clockspeed, but is capable of hitting a maximum Turbo speed of 4GHz. That is, however, only on a single core, with the cpu generally sticking lớn a 3.8GHz frequency during standard usage.

That would seem to make it very much the poor cousin lớn the vi xử lý core i5 8600K. That’s still a resolutely six-core chip, but with an all-core Turbo of 4.3GHz (or 4.6GHz if you go for a belligerent asus board that flouts Intel’s Turbo ratings), và is capable of overclocking lớn a massive 5.1GHz without much effort at all.

But the i5 8400 has still got the same 9MB of L3 cache, a lower-rated TDP of 65W – versus the K-series’ 95W TDP – & honestly performs lượt thích an absolute hero.

We’ve previously gone into depth on the Coffee Lake architecture, but suffice khổng lồ say, it’s more or less the same 14nm thiết kế we’ve seen in Skylake and Kaby Lake, the 6th and 7th Gen, architectures.

This time, however, there is no option for backwards compatibility, unless you’re happy lớn make with the microcode updates yourself. The new Coffee Lake chips, such as this ‘ere vi xử lý core i5, will only function within the confines of a 300-series chipset. And, until this year, your only option on that frontwas the high-end Z370 chipset. That did take some of the shine out of this relatively budget-oriented hex-core CPU, as the expensive Z370 feature phối isn’t really necessary with the 8400 and it’s locked down multipliers.

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Intel core i5 8400 benchmarks


elaopa.org demo Rig:Asus ROG Strix Z370-F Gaming,Nvidia GTX 1070, 16GB Crucial Ballistix DDR4, Corsair HX1200i,Philips BDM3275


Intel vi xử lý core i5 8400 performance

Back in the dark old Kaby Lake days of early 2017 there was only a modicum of gaming performance difference between the K-series core i5 7600K and the vi xử lý core i7 7700K. It was a no-brainer, then, for us khổng lồ recommend gamers eschew the more expensive HyperThreaded cpu in favour of the vi xử lý core i5.

There was a non-K chip core i5 – the i5 7400 – which had essentially the same vi xử lý core configuration, but with a slightly lower clockspeed. Sound familiar? But it was generally well off the pace of the 7600K in our gaming benchmarks so we largely ignored it. That was why I was less excited about the prospect of the core i5 8400, despite its extra couple Coffee Lake cores. After all, if you wanted lớn save a few quid, & bag a hexcore cpu regardless of its gaming performance, then AMD had you covered with the original Ryzen 5 1600.

With the Coffee Lake processors, however, there is zero difference in gaming performance between either of the bộ vi xử lý core i5s & the top-spec core i7. And that remains the case whether you’re running the chips at stock speeds or hitting 5GHz+ with the K-series CPUs. The performance of the 8400 is genuinely pretty stunning for a processor that just about costs less than AMD’s cheapest six-core Ryzen 5. Then there’s the fact that it’s capable of delivering gaming frame rates that are higher than either the i7 7700K & i7 7800K.

Unfortunately, for Intel, the second-gen Ryzen processors have closed the gap considerably in terms of gaming, which means they offer more for the money.

Outside of the realm of gaming things are obviously different. The higher frequency of the overclocked i5 8600K, và the extra thread-count of the R5 2600 & 2600X, mean that they’re far better choices for anything that demands serious multi-threaded CPU performance.

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Intel bộ vi xử lý core i5 8400 verdict

Forget all the headline-grabbing overclocking figures, this is the Coffee Lake chip for gamers. Sure, the tantalising prospect of having your K-series i5 running at a heady 5.1GHz, without melting through the layered PCB of your motherboard, is like a siren gọi to us PC people, but if it’s not delivering anything tangible for games that hardly matters.

We’re going lớn see a whole lot of gaming machines built around the chip core i5 8400 in the coming year, & rightly so. It’s a seriously powerful little gaming cpu for the money, và it’s definitely grabbed my attention.

AMD’s magnificent Ryzen 5 2600 has captured our hearts as the go-to gaming CPU of the moment, packing serious computational & decent overclocking performance into a package that still delivers competitive gaming performance.

The fantastic-value chip core i5 8400 is the gamer’s cpu from Intel’s 8th gen Coffee Lake range, which is surprising considering the K-series i5 is capable of hitting 5.1GHz without issue. But overclocking gives you no extra gaming performance that the powerful extra cores Coffee Lake can’t offer on their own.


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Intel bộ vi xử lý core i5 8400

The fantastic-value core i5 8400 is THE gamer"s cpu from Intel"s 8th gen Coffee Lake range. It"s phối of multi-core performance, gaming power, and fantastic value make it one of the best CPUs we"ve tested.


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Updated: Jan 22, 2019

Former hardware editor for whom we will always have a soft spot. Dave has been personally & professionally breaking PC hardware since, oh, before you were born. He loves kittens, GPUs, & long evenings spent battling other people"s networking problems.