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

System: FCAT Processing ROTR 1440p GTX980Ti Data

3DPM v2.1

System: 3D Particle Movement v2.1

Dolphin v5

System: Dolphin 5.0 Render Test

DigiCortex v1.20

System: DigiCortex 1.20 (32k Neuron, 1.8B Synapse)

Blender

Rendering: Blender 2.78

POV-Ray

Rendering: POV-Ray 3.7

Cinebench R15 ST

Rendering: CineBench 15 SingleThreaded

Cinebench R15 MT

Rendering: CineBench 15 MultiThreaded

7-zip

Encoding: 7-Zip Combined Score

TrueCrypt

Encoding: AES

GeekBench 4 ST

Office: Geekbench 4 - Single Threaded Score (Overall)

GeekBench 4 MT

Rendering: CineBench 15 MultiThreaded

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.

GPU Tests: Grand Theft Auto V Overclocking Performance: GPU Tests
POST A COMMENT

115 Comments

View All Comments

  • SanX - Tuesday, June 12, 2018 - link

    They aren't making that much profit off each chip? If they aren't making huge profits then all mobile chip factories lose money by selling the same transistor count processors like the one in Apple or Samsung phones for just $25 Reply
  • 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. Reply
  • 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. Reply
  • 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
    Reply
  • 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. Reply
  • npz - Monday, June 11, 2018 - link

    DPC latency? Speedstep / clookspeed ramp up differences? Reply
  • Ryan Smith - Monday, June 11, 2018 - link

    They all tend to implement uncore clocking differently, even among different products within the same manufacturer. Reply
  • 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. Reply
  • artifex - Monday, June 11, 2018 - link

    Waiting for the i7-80286K, so I can hit the turbo button Reply
  • TheinsanegamerN - Monday, June 18, 2018 - link

    I'm waiting for the AMD 5x86 4700x that will slot into an intel motherboard. Reply

Log in

Don't have an account? Sign up now