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Intel Core i7-8700K


Introduction, 8th Generation Platform Chipset

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To contend 2017 has been a bustling year for desktop-PC processors would be an understatement a distance of Texas—or during least, Oregon. The best approach to sum it all adult competence be to say, simply: In 2017, you’ll get some-more cores (and some-more threads) for your CPU dollar than ever. That keeps removing validated as a year goes on—and it’s not over yet.

AMD kicked off a trend with a eight-core Ryzen 7 chips in March, commanding out on that height with the Ryzen 7 1800XRyzen 5 1600XAMD Ryzen 3 1300XCore i9-7980XE Extreme Edtion. That $1,999 mega-chip done AMD’s competing counterpart, a 16-core Ryzen Threadripper 1950XIntel’s 8th Generation Core U-Series mobile chips. Those were customarily starting to drip out into slim laptops and convertibles when we wrote this, earnest quad-core opening in systems that formerly had been offering only with dual-core silicon. For a deeper contention of 2017’s developments in desktop consumer processors, greatfully see a new reviews of the Intel Core i9-7900XAMD Ryzen Threadripper 1920XComponent Reviews summary/listing page and representation a 19 desktop processor reviews we’ve created this year, starting with the Intel Core i7-7700K, a prototype to a thesis of a examination today. We’ll wait.

Intel Core i7-8700K (In Hand Front)

Now that you’re behind and entirely hold up, it’s time to take a demeanour during a initial of Intel’s 8th Generation Core desktop processors, a family code-named “Coffee Lake.” Much like a company’s initial 8th Generation mobile chips, a Core i7-8700K that we’re looking during here, as good as a Core i5-8400 that we tested and reviewed in tandem with a new Core i7, are radically built on a same pattern as a 7th Generation Core “Kaby Lake” processors (which were, in turn, unequivocally identical to a 6th Generation Core “Skylake” chips, like that family’s head, the Core i7-6700K). Aside from some additional hardware that supports copy-protected 4K streaming for services like Netflix (which came in with a Kaby Lake chips), a simple pattern opposite these 3 generations is scarcely a same, by Intel’s possess admission.

To be clearer about that aspect, a new 8th Generation chips are once again built around a 14-nanometer (nm) production process, yet Intel dubs a routine used with a latest chips “14nm++.” Chips such as a Core i7-6700K (6th Generation/Skylake) were a company’s initial 14nm parts, while CPUs like a Core i7-7700K (7th Generation/Kaby Lake) are built on a 14nm+ process. So hence, with this third iteration of a 14nm process, we arrive during 14nm++.

There are no 10nm chips to be found here, yet since of this serve excellence of Intel’s production process, Intel has been means to holder adult a tip time speeds as high as 4.7GHz for a Core i7-8700K that we’re looking during here. To hang within a 95-watt thermal envelope, though, Intel has forsaken a bottom time of this chip to 3.7GHz, contra a 4GHz bottom of a previous-generation Core i7-7700K.

Intel Core i7-8700K (In Box Straight)

The genuine advancement, though, comes in a series of cores (and following from that, a limit probable estimate threads), in gripping with 2017’s CPU theme. While Intel’s previous-generation mainstream consumer processors surfaced out with 4 cores and 8 computing threads in a past, a Core i7-8700K has six cores and 12 threads. And a Core i5-8400 has 6 cores and 6 threads. (It lacks Intel’s thread-doubling Hyper-Threading record that lets a core hoop dual estimate threads during once.) That means, in speculation during least, that these new chips are means of adult to a 50 percent opening boost in tasks that are means to take advantage of all accessible cores. And single-threaded opening (where Intel has prolonged hold a healthy lead) should be aloft as well, interjection to aloft tip boost-clock speeds on these chips.

But can a six-core Core i7-8700K broach a products opposite similarly-priced AMD Ryzen 7 chips that have 8 cores and 16 threads? And does Intel’s new on-chip integrated graphics solution, dubbed Intel UHD Graphics 630, also yield a poignant speed boost contra a prior era integrated graphics processor (IGP)? To find out, of course, we’ll have to excavate low into a benchmark testing. But first, we’ll take a demeanour during a 8th Generation Core height as a whole, that includes 6 new chips during this stage, and a new Z370 chipset.

“New chipset”: Yes, that means you’ll need a new motherboard to take advantage of Intel’s Coffee Lake desktop processors. Are Intel’s new chips value a pricey, difficult upgrade? And what about gaming opening with a dedicated graphics card? We’ll try to answer all those questions and some-more below.


Ryzen 5 1600X was one of a favorites in a whole Ryzen lineup.) The Ryzen 5 CPUs contest with Intel’s four-core (four-thread) Core i5 chips like a Core i5-7600K.

Intel Core 8th Generation Core i5 and Core i7

Clearly, Intel was going to have to offer adult a response to AMD’s higher-core-count Ryzen chips during some point, and these Coffee Lake chips are arguably a initial salvo. Specifically, we’re looking during a six-core, 12-thread Core i7-8700K here, nonetheless we’ve also tested a six-core, six-thread Core i5-8400 during a same time. But these aren’t a customarily new chips Intel is rolling out in this update. There are 6 chips in sum in a new 8th Generation Core family (for now). Here’s a outline of their specs, approach from Intel…

Intel 8th Generation Core (Chips Specs)

There’s copiousness to take in from a picture above. For starters, a Core i7-8700K we’re focusing on here is labelled during about $20 some-more than what was a launch cost of a Core i7-7700K that it’s replacing. While it’s never a good thing to see pricing climb adult from one era to a next, we don’t consider a strike is poignant or undue here given a 50 percent boost in cores. Anyone prepared to spend some-more than $300 on a processor in a initial place, and penetrating on limit core/thread count, can find a approach to cough adult a additional Jackson.

Arguably some-more engaging is a chip’s TDP (thermal pattern power, a dimensions of heat-dissipation requirements), that Intel rates during 95 watts. That’s customarily 4 watts aloft than a four-core Core i7-7700K, notwithstanding a dual additional cores. Given (as we remarkable above) that a pattern with these 8th Generation Core chips is effectively a same as what’s found in 7th Generation chips, Intel had to do some kind of jiggery-pokery to keep a Core i7-8700K from using significantly hotter than a predecessor.

Most of that seems to have happened with time speeds. The Core i7-8700K’s tip Turbo Boost speed (4.7GHz) is 200MHz aloft than a 4.5GHz roof of a Core i7-7700K. But a new chip’s bottom time of 3.7GHz is 300MHz reduce than a 4GHz bottom time of a comparison CPU. We’ll have wait for benchmarks to see how that translates to performance, yet we’ll contend here that a reduce bottom time didn’t seem to means any disastrous opening issues other than, perhaps, a bit some-more variance, run-to-run, in a benchmark tests than prior chips.

Other additions with these new chips embody some-more sum cache (pretty most expected, given a additional cores via a lineup), and a strike adult in strictly upheld RAM speeds (to 2,666MHz, with a Core i5 and i7 chips). Note, though, that Intel has prolonged been regressive with a rated RAM support. Memory makers have offering kits with higher-than-spec RAM speeds for years. Indeed, a G.Skill Trident Z memory we used for a contrast is rated to 3,600MHz, and it ran during that environment customarily excellent during a testing.



8th Generation Platform Z370 Chipset

As for a height as a whole, there’s not a whole lot (or most during all, really) that’s new, over a new chips and a new chipset. Here’s how Intel laid out a sum in a press materials…

Intel 8th Generation Core (Platform Overview)

To be clear, a 8th Generation Core chips dump into a same LGA 1151 hollow that was used for 6th and 7th Generation chips. But yet a hollow is made a same as before (and is concordant with a same cooling solutions), Intel says you’ll need a new Z370-chipset-based motherboard to use one of a new 8th Generation chips. And we can’t put one of a comparison Skylake or Kaby Lake chips in a new motherboards, either.

The reason, according to Intel, is that a association had to beef adult a power-delivery electronics for a additional cores in a new chips. While there might good be electrical and thermal reasons that obligate new motherboards, it’s no satisfaction for those who recently bought a now previous-generation Z270 motherboard and would like to ascent to one of these new chips. Given that Z270 customarily strictly launched alongside a Core i7-7700K in Jan of 2017, a life cycle of a 7th Generation desktop chips and their concomitant height seems rigourously short. Not that comparison chips and play will be disintegrating overnight, yet desktop platforms and their concomitant chipsets/motherboards customarily have a longer shelf life than customarily 9 months before being relegated to last-generation status. No doubt, copiousness of consumers who bought a new Z270 motherboard this past open or summer will be unhappy to learn how their new house unexpected becomes a dead-end height in a same year.

But what of a new Z370 chipset, then? Does it offer adult concrete new facilities contra a Z270 it’s replacing after reduction than a year? The brief answer: no. Here’s how Intel describes Z370 in a press materials surrounding a 8th Generation processor launch…

Intel 8th Generation Core (Z370 Chipset)

While a pivotal house makers such as Asus, Gigabyte, and MSI, no doubt, will find new facilities to supplement to their Z370 motherboards, a new things that Intel brings to a list with a chipset is flattering most down to softened energy smoothness for those additional cores and overclocking, as good as official support for faster memory. And remember that, for enthusiasts and gamers, that memory-speed boost is effectively meaningless, as RAM that runs during faster speeds has been accessible for a prolonged time.

Intel Core i7-8700K (In Hand Back)

So, we have 6 new chips, that are a whole lot like a previous-generation parts, customarily with some-more cores and somewhat aloft clocks, and a new height that’s also unequivocally identical to what came before it, customarily with additional electronics to hoop a energy final of those additional cores. What about a IGP on these chips, for those who don’t caring most about gaming? Well, for starters, it’s critical to remember that AMD’s Ryzen chips don’t have any integrated graphics at all, necessitating a use of a dedicated graphics card. For those who don’t caring most about gaming, that pushes things in Intel’s favor, since we don’t have to buy a graphics label with Team Blue’s CPUs if we don’t wish to. And unless we have an comparison graphics label that we can lift over, even a low-end current-gen graphics label from AMD or Nvidia will set we behind during slightest $70 these days.

As for a integrated UHD Graphics 630 found on a 8th Generation Core chips, Intel told us a underlying silicon is fundamentally a same as final generation’s HD Graphics 630, yet users should see some softened opening interjection to a somewhat aloft roof on a IGP’s time (what Intel calls a “Graphics Max Dynamic Frequency”). But looking during a numbers, that spec for the UHD Graphics 630 on a Core i7-8700K has jumped by only 50MHz, from 1.15GHz on a Core i7-7700K, to 1.2GHz on a new six-core chip. So design customarily medium gains in support rates on that front, as we’ll see after in testing. But a some-more thespian strike in support rates does come when we span this chip with a dedicated graphics label and set your fortitude to 1080p. When interconnected with an Nvidia GeForce GTX 1080, this chip delivered aloft support rates during 1080p than any other chip we’ve tested to date.

First, though, on to a CPU tests to see what 6 cutting-edge Intel cores can do opposite 8 from AMD.

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