Intel’s RYZEN-KILLER - Core i7 8700K
Linus Tech Tips
·Linus Tech Tips
·2018-05-06
·
1,410 words · ~7 min read
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so
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get it
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a coffee lake yep oh like the CPU we're
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reviewing yup oh yeah well you know what thanks
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for that and while we're at it thanks to tunnelbear tunnelbear makes it easy to
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privately and securely browse a more open internet try telebear for free go
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to tunnelbear.com LTT
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the core i7 8700k and core i5 8400 cpus
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that we're reviewing today are members of Intel's eighth generation core series
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code name coffee lake
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they're built on the improved 14 nanometer plus plus
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process and they fit in the same socket
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as 6th and 7th gen processors but
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for those of you rejoicing in the streets that Intel is supporting the
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same socket for three generations of desktop chips for the first time in a
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decade think again neither 8th gen chips nor the 300 series
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motherboards that go with them are backwards compatible trust us
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we tried Intel has an excuse though at least for
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the new cpus to not work in the old boards because the new z370 chipset even
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though rumors indicate that it's fundamentally a retooled z270 supports
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higher speed ddr4 2666 out of the box
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and offers improved power delivery both
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things that required some tweaks even to hardware
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and so i don't know like maybe this is
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worth making a video about like coaching people on how to watch for this stuff
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because anyone who was expecting a 200 series
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board to get a CPU upgrade hasn't been following Intel's pattern over the last
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10 years now AMD's announced long-term support of
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am4 might bring about a change in this
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behavior from Intel but that remains to be seen AMD's history is to sure support
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a socket for a long time but with cpus that nobody really wants to
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upgrade to with all of that said i totally get why
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the people who invested in fancy z270 boards are mad right now
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architecturally coffee lake is more or less just kb lake which itself was more
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or less just sky lake no avx 512 no
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rebalanced smart cash i mean damn we're not even getting a new hd
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graphics chip not that i cared about that although hooray for hdcp 2.2 i
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guess so that doesn't sound very compelling but
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what is is that we are finally getting a six core Intel chip on the mainstream
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platform and at mainstream prices
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but there's more it's not just a six core chip which is
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kind of what i would have expected them to do the entire core i7 and core i5
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lineup are getting the hex treatment complete with additional cash and this
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is all at roughly the same TDP as the previous generation
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so if you're upset about that
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then i'm glad because this is a good thing
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we all used to get upset about every new
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hardware generation but it's okay salt
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can taste good you know it's like
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oh like this is what it feels like when oh
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that's awful ah oh
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why is this even in here okay i'm sorry
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so this this is what it feels like when
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technology is actually advancing just
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oh now there are new core i3s too but those
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are kind of boring and we didn't get samples so let's get to performance of
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the chips that we have we are going to be doing a lot of
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testing this time around because this is potentially a huge single generation
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leap in performance so we cracked open our previous generation
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Intel rig our current gen ryzen and threw in core i9 and Threadripper for
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good measure so get your yee haws ready
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because it's gun be one heck of a
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shootout and the core i7 8700k comes out guns
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blazing in our 1080p gaming tests it predictably trades blows at the top of
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the heap with its predecessor depending on per game multi-threaded optimization
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curiously it seems to fare slightly worse overall
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but it's nothing to cry about more interesting is the core i5 8400
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riding into town with 7700k like performance at an i5 price
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as for our 4k gaming tests well
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these are some super boring if beautiful and high resolution graphs
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there is a reason that Anthony coined the term the great equalizer for 4k in
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the core i9 extreme edition video everything performs the same when the
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GPU is the bottleneck synthetic gaming benchmarks tell a similar story
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moving on to productivity oh boy
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the core i7 8700k kills it here easily surpassing ryzen in
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multi-threaded tests and even approaching the core i9 lineup thanks to
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its higher core clocks and it even
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decisively snatches the single threaded crown from its predecessor thanks to its
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higher turbo and extra cash as for the core i5 8400 its lack of
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hyper threading does hurt it here compared to its competitor the ryzen 5
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1600. and since rise and chips are
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unlocked that gap could widen with overclocking
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thermals are not that great for the 8700k
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although this seems to be at least partially a firmware bug since when
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overclocked we actually got lower readings
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and power consumption is higher than the last gen but
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nothing like the hedt and workstation chips that we've been reviewing recently
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let's talk overclocking it's pretty simple and there's plenty of
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fine control including per core over clocks
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at five gigahertz yes my friends five
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gigahertz six cores we managed a pretty decent improvement in performance on our
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8700k giving it similar headroom to our
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7700k across the board
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though as always your mileage may vary bringing us to value and it's here that
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coffee lake shines when system cost is accounted for
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compared to kb lake the core i7 8700k is
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on par for gaming so it's good but
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at over a hundred dollars less than that the core i5 8400 is the one that's going
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to be really disruptive be it for gamers
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or entry-level content creators in productivity the two actually switch
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places the 8700k takes the crown here
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while the 8400 sits in the back seat next to ryzen
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overall though both of the new Intel chips sit pretty
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at the top of the pile so
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was coffee lake a last minute response to ryzen
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in some respects uh pricing not to mention the decision to move the i5 line
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up to six core it might be
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we don't know how good Intel's you know corporate espionage is you know maybe
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they knew ryzen was going to be good a year and a half two years ago when
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they would have had to start working on this or maybe they didn't
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whatever was the case this release is a major performance win for the consumer
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