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
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  • Marlin1975 - Monday, June 11, 2018 - link

    You used a "Cooler Master CLC"? Is that what comes with the CPU? If not then this is a awful review. Should use what cooler it comes with. Reply
  • Beany2013 - Monday, June 11, 2018 - link

    it doesn't come with a cooler, as far as I'm aware. Reply
  • Ryan Smith - Monday, June 11, 2018 - link

    Correct. Reply
  • seamonkey79 - Monday, June 11, 2018 - link

    Should have run it naked then, what were you thinking? /s Reply
  • Ryan Smith - Monday, June 11, 2018 - link

    I was thinking that getting blocked by content filters for indecency would hurt my business... Reply
  • deathBOB - Monday, June 11, 2018 - link

    You see indecency, I see a new (and potentially lucrative) take on PC hardware reviews. Reply
  • Ryan Smith - Monday, June 11, 2018 - link

    That was already tried in the 90s. It doesn't work as well as you might think. (RIP PCXL) Reply
  • Alexvrb - Monday, June 11, 2018 - link

    See that's the problem with content filters... always chafin' me. Reply
  • npz - Monday, June 11, 2018 - link

    I guess you haven't bought any unlocked Intel cpus before Reply
  • SirMaster - Monday, June 11, 2018 - link

    Well, you can't say "before". You would have to say more recently. My unlocked 4770K came with a heatsink/fan. Reply

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