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Intel Core i7-8700K and i5-8400 Coffee Lake CPU Review (Page 2)

By Steven Bassiri on Oct 5, 2017 08:01 am CDT
Rating: 93%Manufacturer: Intel



The CPUs look identical to their predecessor, and they both fit in each other's motherboards. There will probably be some confusion with users buying 100 and 200 series LGA1151 motherboards and tossing in an 8th Generation core processor, so hopefully, retailers will step up and raise awareness. We are told that there is TIM under the CPU's integrated heat spreader, which means that many people will decide to delid their CPUs to gain a few hundred extraMHz when overclocking.


The bottoms of the CPUs are also very similar, and there doesn't seem to be any extra pads on the 8th generation CPUs compared to the 7th generation CPUs.

Test Setup

When we run out of the box, that literally means out of the box, as the majority of consumers run their systems. We aren't optimizing RAM or anything else unless otherwise specified.


I used GIGABYTE's new Z370 AORUS Gaming 7 motherboard, which is GIGABYTE's top of the line Z370 model at launch. It features a ton of features, but most importantly, it has a very powerful VRM for overclocking. Featuring Intersil's new digital PWM controllers and Smart Power Stages, the VRM on this motherboard is extremely powerful.


We also received a 32GB Optane Memory Module to play around with, and we will experiment more with the module later. With Optane you can match a 16GB or 32GB module with a SATA HDD or SATA SSD, and it acts as a super responsive cache that bridges the speed gap between system storage and system RAM.

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Steven Bassiri

ABOUT THE AUTHOR - Steven Bassiri

Steven went from a fledgling forum reader in 2003 to one of the internet's brightest stars by 2010. Armed with an information systems degree, a deep understanding of circuitry, and a passion for tech, Steven (handle Sin0822) enjoys sharing his deep knowledge with others. Steven details products down to the component level to highlight seldom explained, and often misunderstood architectures. Steven is also a highly decorated overclocker with several world records under his belt. He brings that knowledge and experience to TweakTown.

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