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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  • Namisecond - Monday, July 9, 2018 - link

    There are plenty of computers with K series CPUs that are run at stock. Only people who assemble their own computers from components would even consider overclocking their K-series CPUs. I personally have a 4790K and a 7700K running at stock clocks and I built both those systems from scratch. Reply
  • mr_tawan - Monday, June 11, 2018 - link

    My AMD Athlon XP 1600+ didn't come with a heat sink ... Reply
  • owan - Monday, June 11, 2018 - link

    Almost anyone dropping $425 on a chip is prepared to shell out another $100 for a CLC. They are very common in this market segment, and I think acting like its some kind of grave injustice against AMD that a CLC is being used is just asinine. Reply
  • jklw10 - Monday, June 11, 2018 - link

    Using intel stock cooler absolutely fucking idiotic... You know intel is the scumbag company that want to get maximal profits. Hence the toothpaste on the die and a cactus for a thermal solution Reply
  • AutomaticTaco - Monday, June 11, 2018 - link

    Every business is about profit. It is how they stay in business. You choose to make a purchase or not. Their selection of thermal compound matches the rating of the processor. The choice to simple sell a processor is fine with me. If you don't like the processor or them just buy something else. Simple enough. Your level of hatred for them is ridiculous. Simply buy an AMD or build otherwise. Reply
  • mkaibear - Tuesday, June 12, 2018 - link

    Yeah, apart from the fact that the "toothpaste" on the die avoids all the problems with solder and alternative TIMs and works sufficiently for the processor to perform as advertised at the speed they specify within the temperature range they specify, and the thermal solution works well enough for people who don't overclock.

    So basically Intel states precisely what they say they will provide, then provides it, and apparently that makes them a "scumbag company that want to get maximal profits" (as if any company doesn't want to get maximal profits...)

    Get a grip.
    Reply
  • Alexvrb - Tuesday, June 12, 2018 - link

    WHAT problems with solder? It was a cost-cutting measure, and anyone who claims otherwise is either a shill or a fanboy. That doesn't even address the fact that potential issues with "alternative TIMs" can apply to Intel's compound too. There's plenty of good pastes out there with excellent longevity and better thermal performance. They're more expensive.

    With that being said Intel's current crop of processors have enough headroom compared to their competition that they simply do not care to improve. When and if AMD's future Zen iterations are able to clock aggressively, at that point Intel will start thinking about switching back to solder (at least on their unlocked higher-end chips).
    Reply
  • Oxford Guy - Thursday, June 14, 2018 - link

    Correctly formulated typical solder may have a cracking issue under the stress of liquid nitrogen cooling. For water and air cooling it won't. So, for "real world" cooling, "all the problems with solder" comes down to only faulty formulations — like the formulation Nvidia used in a mobile GPU line that led to widespread premature failure throughout the industry (and, of course, no recalls). Reply
  • Oxford Guy - Thursday, June 14, 2018 - link

    "avoids all the problems with solder"

    Oh, boy, the liquid nitrogen bogeyman.
    Reply
  • Death666Angel - Monday, June 11, 2018 - link

    That would be a review of the cooler, not the CPU. And anyone buying a 400+USD CPU should invest in a decent cooler as well, that is just common sense. Reply

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