The Intel Core i7-8086K Review
by Ian Cutress on June 11, 2018 8:00 AM EST- Posted in
- CPUs
- Intel
- Core i7
- Anniversary
- Coffee Lake
- i7-8086K
- 5 GHz
- 8086K
- 5.0 GHz
Overclocking Performance: CPU Tests
In the third page of the review we showed our overclocking results, with our CPU managing to hit 5.1 GHz stable with a sizeable increase in voltage. Running at 5.1 GHz incurred rather high temperatures however, so for our benchmark suite we dialed back to 5.0 GHz and run a number of our tests again at this fast speed. We also ran some benchmarks at stock frequency but with increased DRAM frequencies. We ran the DRAM in our ASRock provided system at DDR4-3466, slightly overclocked beyond its DDR4-3200 sticker value.
For this page (and the next), we’ll show the overclocked results of the Core i7-8086K using the fast memory kits as well as the 5.0 GHz overclocked setting (at base memory). The Core i7-8700K numbers are also included for reference.
FCAT Processing
3DPM v2.1
Dolphin v5
DigiCortex v1.20
Blender
POV-Ray
Cinebench R15 ST
Cinebench R15 MT
7-zip
TrueCrypt
GeekBench 4 ST
GeekBench 4 MT
For everything except the most lightly threaded workloads, overclocking the 8086K to a flat-out 5GHz shows some reasonable gains. These results aren't you couldn't already extrapolate based on the clockspeeds, but it's nice to put theory to practice. It also highlights the unfortunate shortcoming of the CPU: being able to turbo one thread to 5GHz just isn't that useful, since you'll very rarely have a complete system workload that allows it, even if the heaviest workload is single-threaded. The 8086K simply begs to be run at a flat-out 5GHz to get the most out of its capabilities.
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Hxx - Thursday, June 14, 2018 - link
who said binned chips? that would imply added costs. Did intel make some official statement? There is now way the 8086ks are binned chips. Intel clocked the 4.7ghz core to 5ghz on a 8700k. That's doable on any cooler you dont need a binned chip for that. Perhaps additional testing was done to make sure they're stable but there is no way intel cherry picked these chips.AutomaticTaco - Monday, June 11, 2018 - link
Okay. So people make purchases. So be it. If it's not better you can purchase something else. And others can make up their own minds.LemmingOverlord - Monday, June 11, 2018 - link
No real explanation why the 8086K underperforms the 8700K in multithreaded CPU tests, then. Considering they are rated the same at more than dual-core usage I can't really understand.Utter waste of money, that's for sure
Ryan Smith - Monday, June 11, 2018 - link
As noted in the testbed section, this wasn't run on our standard testbed since Ian didn't have it with him in Taiwan. Every motherboard is different, sometimes infuriatingly so.AsParallel - Monday, June 11, 2018 - link
Because ASRock and configuration. ASRock boards are a pain to dial in, and sometimes their firmware is an immovable object.artifex - Monday, June 11, 2018 - link
Waiting for the i7-80286K, so I can hit the turbo buttonTheinsanegamerN - Monday, June 18, 2018 - link
I'm waiting for the AMD 5x86 4700x that will slot into an intel motherboard.AsParallel - Monday, June 11, 2018 - link
Purchased one for me and a few to sit on the shelf for 10 years. Just in time for the 50th :)peevee - Friday, June 15, 2018 - link
Hopefully, by that time x64 will die.Jad77 - Monday, June 11, 2018 - link
I don't feel so bad about missing the contest now. How I managed to be so completely out of loop is baffling.