ASRock Z370 Fatal1ty Gaming K6 Motherboard Review

/ 5 months ago

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ASRock Z370 Fatal1ty Gaming K6 Motherboard Review

ASRock Z370 Fatal1ty Gaming K6

The new Z370 chipset motherboards may not be what everyone wanted when it comes to the new Coffee Lake CPUs. However, our reviews of the i5-8400 and the i7-8700K really surprised us at just how fast the new Intel hardware really is. Sure, Z370 offers no innovation over Z270, but with the new 6-core CPUs installed, they’re some of the fastest gaming hardware on the market today. With that in mind, we’ve got yet another premium gaming motherboard to test today, the ASRock Z370 Fatal1ty Gaming K6!

Equipped with the upgraded 1151 socket for 8th Gen Intel Coffee Lake, the K6 is packed full of high-end features. It supports quad-SLI and 3-way CrossFireX for extreme gaming builds. You’ll also find very high-quality sound hardware, negating the need for external sound processing. There’s a huge amount of storage options, including M.2 and Optane support. If that wasn’t enough, there’s dual LAN too, which certainly couldn’t hurt if you’re a serious online gamer.


  • Supports 8th Generation Intel® Core™ Processors (Socket 1151)
  • Digital PWM, 12 Power Phase
  • Supports DDR4 4333+(OC)
  • 3 PCIe 3.0 x16, 3 PCIe 3.0 x1, 1 M.2 (Key E)
  • NVIDIA® Quad SLI™, AMD 3-Way CrossFireX™
  • Graphics Output Options : HDMI, DVI-D, D-Sub
  • 7.1 CH HD Audio (Realtek ALC1220 Audio Codec)
    Supports Purity Sound™ 4 & Creative Sound Blaster™ Cinema 3
  • 8 SATA3, 2 Ultra M.2 (PCIe Gen3 x4 & SATA3)
  • 2 USB 3.1 Gen2 10Gb/s (1 Type-A + 1 Type-C)
    9 USB 3.1 Gen1 (1 Front Type-C, 4 Front Type-A, 3 Rear, 1 Fatal1ty Mouse Port)
  • Dual Intel® Gigabit LAN
  • ASRock RGB LED
  • Intel® Optane™ Memory Ready

Motherboard Overview

Other nice features include the powerful 12 Phase design, with high-performance chokes, MOSFET and caps, allowing you to hit high overclocks with increased stability and reliability.

Product Trailer

Check out the video from ASRock below, showing off some of the cool features on this motherboard. Bonus, they’ve got a video showing off their cool RGB LED lighting features too!

RGB LED Lighting

What’s in the Box?

In the box, you’ll find all the usual documentation, a motherboard backplate, hard SLI bridge, M.2 screws, and four SATA cables. That’s not a lot, but it’s pretty much everything you’re likely to need.

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8 Responses to “ASRock Z370 Fatal1ty Gaming K6 Motherboard Review”
  1. Jake Feimster says:

    Why didn’t you put on a pair of headphones, plug them into the rear panel of the motherboard, and LISTEN to the sound? You would’ve noticed significant electronic interfernce–which, I assume is a major hardware fault. I’m on my second Z370 K6 and they both do it–so I assume they all do it.

    “There’s also the audio performance, and with an ALC1120 codec, as well as Purity Sound, and Sound Blaster Cinema 3, it’s got as good or better sound processing that anything else out there right now. That means you’re unlikely to need additional hardware to get the best sound from your speakers, or your headsets.”

    Guess not, huh? You’re one of the only reviews of this mobo available and I took your word for it.

    • Peter Donnell says:

      Hardware faults happen, but if two motherboards did it, to my mind that would point to an outside source or another component that was faulty. I hope you get the problem solved though, poor sound would drive me mental. However, it seems pretty rude of you to blame the fault on us and our review, based on the fact that ours wasn’t faulty.

      • Jake Feimster says:

        Sorry, I was/am “mental” as you say. As I still haven’t gotten it fixed, but as I wasn’t willing to wait any more time without the system, I am currently “dealing with it”… Certainly not your fault, of course. I was/am just frustrated to buy a board partly for sound quality and receive… this… twice… after waiting for Intel’s slow launch to begin with… Maybe we will RMA again, with ASRock this time…

    • Brian says:

      That buzzing is caused by an improper grounding in the audio section specifically! make sure you have ALL screws tightened fully, especially around the Audio Components!

      The ASRock Fatal1ty Z370 Gaming K6 is by FAR – the BEST Motherboard for the money, because in terms of RAW PERFORMANCE, it is tied with the best – and has cooler VRM temps than ANY other brand – due to severely overbuilding their CPU VRMs! With 12 phases for the CPU alone, each phase capable of ~44 to 60 Amps at 100 C (which they will NEVER hit in a well ventilated case) combined with TOP QUALITY 60 Amp Chokes, and top of the line Black 12k Nichicon Capacitors – there is nothing this board lacks when it comes to Overclocking!

      And overall, it really does not lack ANYTHING that ANY other Z370 offers – unless you really want built in 10 Gigabit Ethernet, 3+ M.2 Slots (K6 has 2), a FEW more USB ports – or already built in Wifi. If none of that matters to you, as it does not to myself, then there is literally NO other motherboard that is even CLOSE to as good as this one! If you really want some or all of those other features, then I would buy either the ASRock Taichi, or the top of the line Fatal1ty Professional Gaming i7, which while more expensive, are still not AS expensive as the Asus, MSI, Gigabyte, or other equivalents!
      I have been using ASRock Motherboards in ALL of my builds over the last 7 years, they are not only top notch, and less expensive than the competition – but their service is also top notch! From what I have read, if this audio problem persists, ASRock will RMA you. I know they have for me before when I got a partially broken board for another person’s build – that was likely caused in shipping.

      I for one, have had 2 ASRock Fatal1ty Z370 Gaming K6 motherboards, as I accidentally bricked one by breaking a CPU pin, see story below**… Neither board had this audio issue for me at all, but then I also use a powered screwdriver, and I put a screw into every hole in the Motherboard, the powered screwdriver does shut off after too much torque, but it tightens it farther than I likely would by hand. When removing a screw it is obvious to see the scuff marks where the screw fully contacted the little metal contacts around said screw hole. These are VERY important at times!

      **NEVER use cheap Liquid Electric Tape to re-seal your CPU after delidding, after 24 hours of sitting clamped down in the kit, I picked my CPU up by the IHS, and right as I was hovering over the socket to place it in, the IHS fell off, the CPU then fell at just the wrong angle and badly bent 4 pins which i tried to repair, but one broke as I was slowly coaxing it back into place… There is a REALLY good reason Rockit Cool sells a very good Gel Superglue on their website along with the Rockit 88 – luckily I had some of this exact Loctite Brand Gel Superglue with its really easy applicator, unfortunately I only used that AFTER I tried Liquid Electric Tape on the recommendation of several Forum users, who claim that is what Silicon Lottery uses, as well as a FEW Forum users who said to never ever use superglue – well they were wrong. Because their arguments were incorrect: A) Superglue does NOT eat through PCBs – at least not the type I used, and B) It actually CAN be delidded again should I feel the need, and it is not a major hindrance, as I used just 4 very small dabs of said glue, one in each corner.

      Luckily I do NOT ever need to Delid again! Running 5 GHZ on all cores and Ring Bus, 0 AVX offset, 100% stable, and VERY COOL! Hottest it gets, is with Prime95 AVX Small FFT Torture test, and even then it only hits 81 C! I COULD easily go to 5.3+ GHZ with this chip and this AMAZING Motherboard – but honestly, beyond even just 4.3 GHZ on all cores, the gain is VERY minimal overall in my primary use – gaming. But I AM a heavy Overclocking junky, and there is something REALLY satisfying about seeing CPU-X read 5000 MHz on all cores whenever under a sustained load! And what makes it FAR MORE satisfying still, is the fact that I now have the same temps in AIDA64 as I did while GAMING before the Delid – and that was 4.8 GHZ cores, 4.6 Ring Bus at a good deal lower Vcore! I actually would hit about 75 C in gaming before the delid, now I hit 77 in AIDA64, and gaming BARELY ever hits 60 C!

  2. Ron Perillo says:

    It happens once in a while, especially with ones from similar batches. It happened with me and MSI’s Z97 Gaming 9. Got two different boards with problematic audio until I got a third one from the US that worked fine.

  3. Alex says:

    Sounds I found MB to buy. Looking forward to replace my old rig with new 8700k cpu for my wedding photography / videography editing.
    Still it is not clear why results have such a big difference if they use same CPU and Z370 chip.

  4. Brian says:

    It would APPEAR that however this testing was done, that not ALL 5 GHZ overclocks were the same. I would like to know the memory and Cache speeds for each, some motherboards lock them by default – others will keep cache at around 3.7 to 4.4 GHZ unless you manually enter the number yourself

    I run my cache at 5 GHZ, and my Memory at 3100 MHZ, my Cinebench is 1660 by 221, my AIDA64 Cache and memory test shows 49.6ns Memory latency, and 9.8ns L3 Cache Latency, with 401 GB/sec read, 290 Write, and 340 copy.

    This Motherboard is BY FAR the BEST for the money! And overall one of the best, period!

  5. Zeanon says:

    For me the interferences were caused by Windows, which used wrong Audio presets (my mic port was also deactivated, why ever?), activating the mic port and switching the standart device fixed it for me(I think that was the fix cause I never changed anything hardwarewise)

    So the Problem might not necessarily be hardware caused, sometimes its just some software issue
    (Im using a Sennheiser Game One, which is pretty sensitive to poor audio quality and i am as well, so in my case the problem is definitly fixed)

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