Intel Core i7-8700K and Core i3-8350K

Intel Core i7-8700K and Core i3-8350K
This year, we have tested Intel Kaby Lake , AMD Ryzen , the Pryling Skylake-X , AMD Ryzen Threadripper , the Kaby Lake-X and Intel Coffee Lake in the form of the six- core Core i5-8600K .

The latter we had the chance for, but a Core i5 does not come as known alone. It became a company of both more powerful and more modest relatives, and of these we have now taken a look at Big Brother Core i7-8700K and little brother Core i3-8350K.

The former is the actual flagship under the Intels Coffee Lake platform . The Core i3 model is a four-core overclock case - while Intel's platforms have so far only given two cores to the i3 processors.

The Core I7 and I5 models now have you probably remember six kernels.

Looking into AMD

Until AMD released the Ryzen processors in March, Intel was dominant in this segment, but without real competition, developments had to some extent stagnated. This has caused the Coffee Lake generation to do something and there is no doubt that AMD's Ryzen processors are in the line of sight here.

In particular, AMD's six- and eight-core alternatives have boosted Intel's speed. For processors like Ryzen 5 1600X and Ryzen 7 1800X , AMD could tamper the Kaby Lake flagships Core i7-7700K and Core i5-7600K in proper multi- core driving .

Intel therefore had no choice but to insert more cores into its next generation. But when we compare the specifications of New Coffee Lake and Kaby Lake - and we've done that in the table below - we're talking about improvements on several levels: faster memory frequency, more cache and larger room for turbo speeds.

* Although Coffee Lake uses LGA 1151 - the same base as Kaby Lake and Skylake - the processors can not be used on older motherboards with Intel's 100 or 200 Series chipset. At the time of writing there are only motherboards with the Z370 chipset that can be used with Coffee Lake.

Unlike its big brothers, Intel Core i3-8350K can not officially bid at higher memory frequencies. But it has twice as many cores and twice as much cache as its predecessor Core i3-7350K. All in all, i3-8350K reminds us more of previous generations Core i5 processors, albeit without turbo mode.

But it 's overclockable.

The Core i7-8700K is a different beast on the paper, with both turbo and Hyper-threading (parallel processing). The latter means that it has twelve logical process cores.

The Core i7-8700K is priced at around $ 4,000 - while the little brother Core i5-8600K can be picked up to just over 2500 kroner in some stores. Four-core Core i3-8350K starts on its side at around 1800 kroner.

How these three Coffee Lake processors interact with each other, other Intel processors and the AMD competitor, you can look over the next pages , or you can continue to read on this page for the short version.

A real top modelPhoto: Vegar Jansen, Tek.noWith six cores, Hyper-threading and turbo frequencies up to 4.7 GHz, the Core i7-8700K is a small wildlife. Looking at single-core performance and keeping overclocking outside, it gives and blows to all other processors we know.

With more cores in turn, it is of course not as dominant, but it performs well with AMD's eight-core Ryzen processors - at least in a number of practical and real situations.

Depending on how many cores actually charged and how much they are charged, Intel's Coffee Lake top model can actually clash with AMD's more expensive Threadripper processors.

The Core i7-8700K is, however, quite so crowded when it has to give all it has. According to our measurements, the processor itself can draw 115 watts - and even without overclocking - while the TDP is rated at 95 watts. Here you are advised to have an elaborate processor cooler.

Corruption is, of course, no problem with this processor, but with twelve logical cores, the Core i7-8700K can yield a bit worse performance than the little brothers in certain games and resolutions.

Over time, games will get better support for many process strings. In the meanwhile, if the problem arises, resolve this problem by turning off Hyper-threading so that the processor in practice works like an overclocked Core i5-8600K.

As mentioned, the Little Brother Core i3-8350K has got four decent cores, and it works to a large extent like Core i5 processors of the former processors. It also lies mostly between Core i5-6600K and Core i5-7600K in performance.

Since the i3 processor is missing turbo mode, this processor is also the one that gets the most out of overclocking.


The Intel Core i7-8700K and the more popular Core i3-8350K are positioned in terms of pattern and above the Core i5-8600K in performance and price.

For Core i7-8700K you have to spend about $ 4,000, which should fit within most enthusiast budgets. This processor may be an alternative to a Core i7-7800X or AMD Ryzen 7 1800X , offering higher clock rates and better single-core performance than these.

The Coffee Lake top model is a possible upgrade for anyone who has an aging i7 flagship from a previous Core generation, but remember that you also need a new motherboard with this platform. And if you already overclock, it will only provide remarkably better performance in applications that benefit from all the kernels.

Most games also run well on a Core i7 processor with four kernels.

Core i3-8350K has a price tag of about 1800 kroner. For this, you get an overclocked processor with performance in line with the previous Core generations i5 top models. It's charming enough as it's right out of the box, not to mention that it draws less power than the 91-watt TDP would indicate.

The natural AMD option for this processor is the hundred-dollar less expensive Ryzen 5 1500X , which, with twice as many logical processors, makes it faster in applications that can take advantage of all the power.

But the Core i3-8350K is a better overclock and when we dramatically increase the speed from the 4.0 GHz standard frequency, this can in certain applications lift performance close to - or even past - earlier Core flagships like Core i7-7700K .

It also does a great job with many games.

But if your wallet is not completely empty, we would honestly spend $ 800 extra and spent on us a Core i5-8600K instead. This one has two extra cores, turbo mode and is equally overclocking.

Given the actual performance versus price, Intel Core i5-8600K is also a better and less demanding purchase than the Core i7-8700K. The flagship with Hyper-threading is of course faster when it gets used to all the forces - the question is just how often it gets the opportunity to do it.

Then it might be easier to go for the Core i5-8600K and add the 1500 crowns you save in the pot to your next graphics card.

But if you are one of those who always want the best - or looking for something that can replace an i7 top model from a previous generation - of course, the Core i7-8700K will be the natural choice for this platform.

AMD's alternatives in the same price range are AMD Ryzen 7 1800X . With two additional kernels, it trials over in tests where it gets all its 16 processing bars in full swing, but higher clock frequencies and better single core performance mean that the Core i7-8700K is preferred in many situations.

Finally, we recall that as the processor landscape has changed completely in 2017, grades can hardly be compared directly with the CPUs that came at the beginning of the year.