In­tel Core i7- 8086K

Cel­e­brat­ing 40 years of In­tel X86

PCPOWERPLAY - - Contents - Price $ 629 www.in­tel.com.au

T o cel­e­brate 40 years since the re­lease of the 8086 CPU, In­tel has re­leased the aptly named Core i7-8086K. In­ter­est­ingly, the 8086K, with its 5GHZ max­i­mum turbo boost, is ex­actly 1000x the fre­quency of the orig­i­nal 8086, which came with a 5MHZ clock speed.

The 8086K is a lim­ited edi­tion six core/ twelve thread CPU based on the Cof­fee Lake ar­chi­tec­ture and can be con­sid­ered a higher-binned ver­sion of the al­ready ex­cel­lent i7-8700k. It comes with a higher base clock and a more ag­gres­sive turbo fre­quency. Where the 8700K comes with a 3.7GHZ base and 4.7GHZ max­i­mum sin­gle thread turbo fre­quency, the 8086K bumps up the clocks to 4.0GHZ base and 5.0GHZ turbo. This makes the 8086K the first In­tel CPU that can reach 5GHZ un­der stock op­er­at­ing con­di­tions.

Ev­ery­thing else is shared with the 8700K. It’s man­u­fac­tured on In­tel’s 14nm++ node and is rated with a 95W TDP. There’s 12MB of L3 cache and sup­port for up to 64GB of dual-chan­nel mem­ory at DDR4-2666, though of course you can run faster mem­ory than this when paired with a Z370 chipset motherboard. In­tel’s in­te­grated UHD Graph­ics 630 en­gine is also present.

While the 8086K is a very fast CPU, we feel it could have been so much more. For ex­am­ple, sol­der­ing the heat­spreader to the die, as op­posed to the ther­mal paste that is used would have tremen­dously helped the overclocking po­ten­tial of the chip and kept tem­per­a­tures lower. Also, Cof­fee Lake scales quite well with lit­tle or no volt­age in­crease up to the 4.5GHZ range. Could you imag­ine a 4.5GHZ base clock CPU with, say, a 125w TDP that can eas­ily OC to 5.1-5.2GHZ+ with temps in the 60s and 70s?

The 8086K’s higher sin­gle-threaded turbo boost abil­ity means it takes the top spots in all of our sin­gle or lightly threaded bench­marks, how­ever. There’s is ba­si­cally no dif­fer­ence in multi-threaded work­loads though, as the higher core count turbo boost fre­quen­cies re­main the same between the 8700K and the 8086K. If you’re into gam­ing though, and es­pe­cially us­ing a very high re­fresh rate mon­i­tor, then the higher min­i­mum and av­er­age FPS ca­pa­bil­i­ties on of­fer will very much im­press. We also see that the 8086K can­not hold its 5GHZ boost clock for all but the briefest pe­ri­ods; when we set to a flat 5GHZ OC, the re­sults are sig­nif­i­cantly faster. The CPU does need to fit into its tight power bud­get at stock set­tings though, so this isn’t much of a sur­prise.

The use of the high­est Cof­fee Lake bins means the av­er­age overclocking abil­ity of the 8086K should be bet­ter

This makes the 8086K the first In­tel CPU that can reach 5GHZ un­der stock op­er­at­ing con­di­tions.

than the 8700K. While our 8700K re­quired a fairly hefty volt­age bump to get to 5GHZ sta­ble with all cores, our 8086K did it with ease with 1.275v, def­i­nitely less than many 8700K’s re­quire. Load tem­per­a­tures are pretty toasty though.

The 8086K is the best gam­ing CPU on the mar­ket. But, it does come with a rel­a­tively hefty price premium over the 8700K, so if you have one of those, there is no rea­son to up­grade un­less you ab­so­lutely must have the best. CHRIS SZEWCZYK

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