Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
Grand Theft Auto V, Hitman & Shadow of Mordor
Grand Theft Auto V
The Core i5-8400 averages 17%-higher frame rates compared to Core i5-7600K. That's a solid jump, but it pales in comparison to the 26% lead over Core i5-7400.
AMD isn't quite as competitive in this title, though we still think overclocked Ryzen 5 1600X and 1500X CPUs are good complements to the mid-range graphics cards most enthusiasts will pair with them.
Hitman finds the Core i5-8400 ahead of everything except for Intel's higher-end Core i5-8600K.
We don't need to break out the percentages to illustrate Coffee Lake's improvements (but we will anyway). Core i5-8400 jumps ahead of the -7600K by 40%, and it beats the -7400 by an astounding 54%.
Middle-earth: Shadow of Mordor
The -7600K and -7400 feature higher base frequencies than their Coffee Lake-based counterparts, and that's an advantage in games that don't benefit much from Turbo Boost. Shadow of Mordor falls into that category, so the Kaby Lake models take small leads over the newer Core i5-8600K and -8400.
MORE: Best CPUs
MORE: All CPUs Content
Current page: Grand Theft Auto V, Hitman & Shadow of MordorPrev Page Civilization VI, Battlefield 1 & Dawn of War III Next Page Project CARS, Far Cry Primal & Rise of the Tomb Raider
Stay on the Cutting Edge
Join the experts who read Tom's Hardware for the inside track on enthusiast PC tech news — and have for over 25 years. We'll send breaking news and in-depth reviews of CPUs, GPUs, AI, maker hardware and more straight to your inbox.
I'd be interested in knowing. Under what circumstances can you get it to hit 3.8Ghz reliably under a 6-core load? That is quite a spread.Reply
If one was to delid the CPU and use a decent CPU cooler. Would it reliably maintain the max turbo boost when the CPU usage demands it? Is the stock heatsink and decent case cooling plenty?
On another note. It is time for the return of the Turbo button. That would be pretty sweet to click the button and manually have the CPU jump between 1, 2, 4 and 6 cores at their respective boost frequencies or down to standard. I know it isn't necessary as it is all automated and that wasn't the purpose of the Turbo button. Some people just like manual control. Plus old time computer geeks would get a kick out of it.
This is a very neat chip at it's price point. Very little has changed between Kaby Lake and Coffee Lake except for the core count. Luckily for Intel, those added cores make all the difference.Reply
This CPU would sit nicely on a budget system. It's a shame that there are no inexpensive motherboards that it could fit into like the conclusion of this article states.
If you didn't plan to overclock, this is the best CPU on the market for gaming and general productivity.
We have AMD to thank for all these budget cpu's from Intel, and you all know why! So thank you AMD.Reply
No, you can't have charts based on FPS or seconds or related to MSRP. Drivers update, Prices change, Memory Speeds Increase and price lowers, MB prices are wide range.Reply
It is known that Some games work better for AMD when AMD GPUs are used. Game FPS can be dramatically improved by changing just one parameter. Test results that are milliseconds or a few seconds or frames faster are irrelevant and subject to variations in real world use on systems that are not clean installs and have other SW installed and running.
20307991 said:No, you can't have charts based on FPS or seconds or related to MSRP. Drivers update, Prices change, Memory Speeds Increase and price lowers, MB prices are wide range.
I don't understand your point. This is a review of the 8400 and comparing it to other CPUs only. Memory, motherboards, and all the other variables are you talking about in a full PC build are irrelevant to this chart comparison. They have to establish a constant standard across the spectrum, and they did so.
20307991 said:It is known that Some games work better for AMD when AMD GPUs are used. Game FPS can be dramatically improved by changing just one parameter. Test results that are milliseconds or a few seconds or frames faster are irrelevant and subject to variations in real world use on systems that are not clean installs and have other SW installed and running.
Again, they are using a single standard across the spectrum comparison. Of course there are infinite combinations of hardware that can game change a little. The bottom line here is that among every major tech review website, all of Intel's chips are better for gaming than Ryzen. The only exception is when dealing with beyond 1080p gaming like QHD or UHD where it's mostly on the GPU. People who buy this chip are the perfect candidate for a 144Hz 1080p G-sync or Freesync monitor.
Glad I didn't waste money on a 1600x.Reply
Compared to the Ryzen 1600 with a B350 its $50 higher. That is a higher video card level. IE get the 8400 with a 1050ti the Ryzen budget would get a 1060 3GB. Intel needs their B360 motherboards for the 8100 and 8400 to ever be a budget winner.Reply
Has the author even bothered to look at the street prices for the CPUs??Reply
Core i5 8400:
The lowest price is $249.99!
The Ryzen 5 1600 is much cheaper:
Price is $199.99~$219.99!
Then if you add the price of the B350 motherboards,they start at a lower level than the Z370 ones.
Why did you label section 10, overclocking, cooling and temperature? There's no overlocking on this chip? I would have like to see at least an attempt at Bclk overlcock with a mobo that has a clock generator.Reply
I really wish more reviewers would look at what sort of boost clocks the i5 8400 can sustain under load, with the stock cooler as well as aftermarket. From what I know you could typically assume past Intel CPUs would operate at or near max turbo almost indefinitely, but with a 50% increase in core count and such an unusually wide gap between base and boost clocks (not unlike their mobile CPUs), I'm curious how Coffee Lake will behave in that regard.Reply