Updated: ASRock Z370 Z390 user discussion thread + Review: ASRock Z390 Phantom Gaming-ITX/ac - Overclock.net - An Overclocking Community

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Updated: ASRock Z370 Z390 user discussion thread + Review: ASRock Z390 Phantom Gaming-ITX/ac

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post #1 of 409 (permalink) Old 04-11-2018, 11:24 AM - Thread Starter
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Updated: ASRock Z370 Z390 user discussion thread + Review: ASRock Z390 Phantom Gaming-ITX/ac

There isn't a ASRock Z370 owners / discussion thread here, so I'm starting one!
I'm bundling it with an ASRock Z370 Fatal1ty Gaming-ITX/ac motherboard a review in the form an ongoing real world usage review (mirrored from a review I left on another tech forum).

You may share your usage experience on the ASRock Z370/Z390 motherboards or the general Z370/Z390 platform.
They may include:
●OC settings, profiles
●Any other relevant discussion
●General troubleshooting


Post 1 will contain key resource toolkit, suggested scope of discussions. Review in the following posts.

ASRock Z390 ATX Boards
Z390 Phantom Gaming 9
Z390 Taichi Ultimate
Z390 Taichi
Z390 Phantom Gaming 6
Z390 Extreme4
Z390 Phantom Gaming SLI/ac
Z390 Phantom Gaming 4
Z390 Pro4


ASRock Z390 mATX Boards
Z390M Pro4


ASRock Z370 ITX Boards
Z390 Phantom Gaming ITX/ac
Z390M ITX/ac


ASRock Z370 ATX Boards
Z370 Taichi
Fatal1ty Z370 Professional Gaming i7
Fatal1ty Z370 Gaming K6
Z370 Extreme4
Z370 Killer SLI/ac
Z370 Killer SLI
Z370 Pro4


ASRock Z370 mATX Boards
Z370M Pro4


ASRock Z370 ITX Boards
Fatal1ty Z370 Gaming-ITX/ac
Z370M-ITX/ac


ASRock Z370/Z390 Toolkit
● Full 1151 BIOS repository including betas - here
● ASRock Timing Configurator 4.0.4 - here
● ASRock Timing Configurator 4.0.3 - here
● Restart to UEFI (Easy UEFI access for fastboot users) - here
● Creative Soundblaster Cinema 5 (Appears to be ALC1220 only)
we'll find out when it goes live, hopefully Z370 users are able to use the Cinema 5 audio suite
● ASRock Windows 7 USB Patcher (Skylake+ xHCI driver patcher for USB install) - here... Only works for Z370

Other good reads - Buying Guide
Z370 / Z390 VRM Discussion Thread - overclock.net
LGA 1151 Z170 / Z270 / Z370 / Z390 VRM List - Hardwareluxx.de
Tweaktown Intel Z370 Motherboard Buyers' Guide by Steven .B


Other good reads - Overclocking Guide
Kaby Lake Overclocking Guide by Rajinder G. ([email protected])
Tweaktown Coffeelake Overclocking Guide by Steven B. (Motherboard editor)
Intel Temperature Guide - [email protected]
Intel DDR4 24/7 Memory Stability Thread - OCN
8th Generation Intel Processor Family for S-Processor Platforms datasheet Vol. 1

Nano 1.1
(17 items)
Z370 Prep
(6 items)
Nano 1.0
(12 items)
CPU
8700K 5300MHz
Motherboard
ASRock Z390 Phantom Gaming-ITX/ac
Motherboard
ASRock Z370 Fatal1ty Gaming-ITX/ac
GPU
1080 Ti
RAM
TridentZ 8GBx2 [email protected]
Hard Drive
970 EVO 2TB
Hard Drive
970 PRO 1TB
Power Supply
EVGA 750W G3
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit | Mint 18.3 | High Sierra 10.13.4
Monitor
Dell Alienware AW3418DW
Keyboard
ThinkPad Compact USB Keyboard with TrackPoint
Mouse
TrackPoint/UltraNav
CPU
8700K 5300MHz
Motherboard
ASUS Maximus X Hero
GPU
UHD 630 (HDMI)
RAM
TridentZ (Black/White) C14
Hard Drive
HGST TravelStar
Cooling
Cryorig R1 Universal
CPU
7700K
Motherboard
ASUS Maximus VIII Impact
GPU
GTX 1070
RAM
G.SKILL Trident Z 16GB
Hard Drive
960 Pro 512GB
Power Supply
EVGA 550W P2
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit
▲ hide details ▲

Last edited by encrypted11; 01-14-2019 at 10:56 PM.
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post #2 of 409 (permalink) Old 04-11-2018, 11:29 AM - Thread Starter
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So sic again, bought the phantom itx!
Sequel to my last writeup.



This round, my writeup here will be aimed at comparisons against the Z370 counterpart on what's improved from an already great ITX board apart aside from just the board walk through.

While my writeup over here will be tailored towards testing the board's features & some synthetic bench numbers. Out of good measure, I've added pre/post meltdown/spectre security patch numbers for your persual at the relevant sections. This is not a Coffee Lake CPU benchmark so you'll find just a few of those (if any at all), and I do not have a 9th gen chip. You can expect short writeups relating to the features and abit of practical usage.

At certain points, I may make reference to the Z370 Fatal1ty Gaming-ITX/ac review I've made previously. So to keep it short you may want to have a quick read of that review as a point of reference.

Product Page
https://www.asrock.com/mb/Intel/Z390...c/index.us.asp

Test Setup
Spoiler!
  • Intel Core i7-8700K (Delidded)
  • Core/Cache: 5000MHz/4700MHz, RAM: XMP_3200 C14 (Except OC Section 5200MHz/4500MHz, RAM: Tuned 4000 C16 1T)
  • ASRock Z390 Phantom Gaming-ITX/ac
  • 2X G.SKILL TridentZ White/Grey 4400MHz-CL19
  • https://gskill.com/en/product/f4-4400c19d-16gtzsw
  • GTX 1080 Ti Founders Edition 11GB
  • Storage (NVMe): Samsung SSD 970 PRO 1TB
  • Storage (SATA): Samsung SSD 850 PRO 512GB
  • EVGA G3 750W
  • Windows 10 Redstone 5 Oct Update (1809 Build 17763.134)

Related Drivers



Packaging, contents, unboxing


Board Front View
Spoiler!


Board Layout - As per ASRock Manual


Visual Inspection.. some key components
Spoiler!
  1. vCore + iGPU Power
    Intersil ISL99227B 7*60A exposed top mosfets interleaved with ISL96138 PWM in 5+2 mode (vCore + iGPU)
    https://www.renesas.com/sg/en/doc/da...l99227-27b.pdf
    These top end mosfets are similar to IR3575 with an "IHS" built in to improve heat dissipation.
    • ISL99227B's are also used on top end boards including Gigabyte Z370 Gaming 7, EVGA X299/Z390 Dark, ASRock X299 OC Formula/Taichi, ASRock X299E-ITX/ac
    • R22 Cooper Bussmann high current inductors?
      http://www.cooperindustries.com/cont...427-fp110v.pdf
    • Nichicon FP12K Japanese capacitors
  2. Sinopower SM7341EH mosfet for memory power
    http://www.sinopowersemi.com/temp/SM..._datasheet.pdf
    (Dual sourced part, some boards ship with Fairchild/Onsemi FDPC5030SG)
    https://www.onsemi.com/PowerSolution...PC5030SG&pdf=Y
  3. PCH/VccSA/VccIO Power
  4. Nuvoton NCT6791D SuperIO
    https://www.nuvoton.com/hq/products/...d/?__locale=en
  5. Z390 Chipset
  6. Realtek ALC1220 audio codec
  7. i219V PHY for 1Gbps Ethernet
  8. Texas Instruments TPS65983B USB-C PD Controller / PD-Charging IC
    Read more about the Alpine Ridge solution: https://www.anandtech.com/show/12228...-thunderbolt-3
    http://www.ti.com/product/TPS65983B
  9. JHL6340 Alpine Ridge Low-Profile Thunderbolt 3.0 controller
    https://ark.intel.com/products/94032...t-3-Controller
  10. Megachips MCDP2800BC HDMI converter for HDMI 2.0 support
    http://www.megachips.com/products/displayport/MCDP28x0
  11. 2X DC fan header (CHA_Fan/Pump+OPT)
  12. 1X PWM Fan header (CPU_Fan)

Heat Sink
Spoiler!

Heat sink surface area is greatly improved along with minor standoff height reductions for improved thermal pad contact. But pads used this round have a marginally lower thermal conductivity over last year's. The VRM cooling solution is overall an upgrade from the Z370 version in cooling capacity with the far larger heat sink mass.
For max perf or i9-9900K individuals, changing of stock 1.0mm thermal pads to 1.5mm 11 - 17 W/mK Fujipoly pads may be desired for improved contact & thermal conductivity.

Intel AC9560 CNVi 1.73Gbps + BT 5.0 card
Spoiler!


BIOS Gallery
https://imgur.com/a/I8pF70J


POST Times (No Windows 10 Fastboot)
Spoiler!

Very quick, no extended memory training sequence even with manual memory tuning.


WiFi Speedtest
Unfortunately, I don't have a router that does 160MHz channel width on 5GHz, it's a 80MHz channel width router (ASUS Onhub)
It delivers noticeable performance uplift over the AC8265
Spoiler!



Connecting to LG TV via Windows 10 Settings - Miracast
No change. Works just as well @ [email protected] as with the Z370 Fatal1ty ITX. All display projection options available (extend, mirror etc)
Running an Xbox Wireless Controller
No change. Works Just as well. It works, no dropouts/disconnections. Inputs register consistently. It can pair with your BT speaker & other BT accessories as well.
Spoiler!



Storage
As with Z370, the performance impact is measureable in benchmarks with full security patches.
But YMMV on the real world difference. Haven't felt the impact personally.
Spoiler!



DPC Latency (30+min)
Board and the associated drivers are very well tuned. All Intel SpeedShift features and C1-10 states are fully enabled in this test. Ultimate performance vs. Balanced on GTAV 30+min runs.

In balanced mode, the DPC latency's well within very good levels with nvlddmkm (nvidia drivers) taking the highest latency spot and unrelated to the board.
Spoiler!



Key Overclocking Voltage/Setting Maximum values in BIOS (as of P1.10 - L1.33 BIOS version)
While its predecessor was very well received and aced on hardware component choices (8 layer PCB, 12K Nichicon FPCap, 60A Intersil ISL99227B) it was critised by pro overclockers for BIOS imposed power & voltage thresholds at "overprotective" levels. The Phantom-ITX is no slouch in this regard, ASRock has responded by exposing it's full list of configurable settings as you'd get on their top guns or LN2 designated boards. Speaking about LN2, this is likely their go-to LN2 board for Z390 which speaks volumes on the confidence on the Phantom-ITX's raw hardware in memory and CPU power delivery.

Though downsides from the EXOC perspective's that are applicable to all Z390 are:
-BIOS contains no XP ACPI support (inability to run XP natively)
-The chipset's native USB controller has no W7 native drivers making it difficult to attain full functionality on legacy OSes.
-Therefore hardware modded union point Z270/Z370 and Z170's are preferred for competitive benchmarking over Z390.

Note: Absolute maximums allowable are not definitively your safety margins. Some are, some are not.

Spoiler!



Overclocking - CPU Core/VRMs
  • It's my 5.2GHz 1.312V OC profile, nothing much has changed.
  • Runs as well on the Phantom-ITX except the 200W Long/Short Duration Power Limit cap has been removed.
  • Key mention: As of BIOS L1.33 ASRock has a full implementation of Asus's adaptive vCore mode (hybrid between stock dynamic voltages + offset mode on turbo ratios). Offset mode OCs can yield as low as 0.000V vCore on idle just like Asus boards with Adaptive.
  • HWInfo build 3610 onwards includes VRM temp readouts from internal VR readings, no exception working on boards with hidden VRM temps.
  • For an ITX machine with no direct airflow the VRM temps are nothing short of amazing, 65C peak on a high current load. The "IHS" on these exposed top MOSFETs do improve surface side heat dissipation while regular MOSFETs with no exposed top has more reliance on sinking heat through PCB layers.
  • The 5+2 true 60A phases layout (intersil exposed powerstages, 12K Nichicon capacitor) is still by far the best rated and costliest Z390 ITX VRM in market.
  • Runner ups in the Z390 ITX VRM race are sporting around 6+2 true 40A TI NEXFets or 40A IR3553s which are still very good attempts. Some do go as low as 3+2 true phases. The phantom ITX would otherwise best handle the i9-9900K without a doubt. In Z390, ASRock's still the most commited vendor doing ITX boards and I'd hope for more competition in this area.

Overclocking - Memory
It's something worth talking about. The memory overclocking headroom is massive. It board takes cold booting on high speed memory (4000MHz+) like a piece of cake if your CPU specimen is up to scratch (sample's IMC capability). Unlike it's predecessor that allows you to scale with memory clocks and IMC voltages up to 1.2V IO 1.35V SA and 1.5V VDIMM, this board tops out at 1.8V/1.8V and 2.2V respectively, the fully unlocked memory overclock capability allows extreme overclockers to run their favourite Coffeelake+ 4000MHz+ C12-11-11-28-1T profile with tuned subtimings.

Example, what OCN's Benchmark Editor "mllrkllr88" did:
https://www.overclock.net/forum/1805...l#post27757904
Spoiler!


My daily Google Stressapptest stable 4000MHz C16-17-17-38-1T profile based on [email protected]'s 8Gx2 Single Side Maximus Apex/Gene profile still works.
  • NO cold boot training drift shenanigans, proper RTL IOL alignment
  • NO extended POST times from memory training sequences, failed POST or multiple retry.
  • Google stressapptest ranks as one of the best memory stress testing tools.
    https://rog.asus.com/forum/showthrea...ry-stress-test

The Good
General
  • USB C (2 lane thunderbolt) Power Delivery Charging up to 36W, works with PD charging laptops, phones, tablets. I recall that this TI + Alpine Ridge combo provided me with a Pixel 2 charge time from near zero to full that's about 10 minutes faster than the Google 18W stock charger
  • Consistent Wireless AC 9560 2x2 MIMO NIC, decent gain at 5GHz even at 10 meters from router with some obstruction.
  • AC9560 paired perfectly with XBone wireless controller, the same Miracast connection to the living room TV at [email protected] works as well
  • 3 Fan headers - based on user feedback, they've changed the 1 PWM+DC + 2 PWM header layout to 2PWM+DC + 1 PWM only header, good effort in improving the board's suitability for fan RPM control with a larger variety of fans
  • Phenomenal POST times even with heavy memory overclocks and discrete GPU (5.9 sec warm, 7.3 sec cold boot). Abit under it's predecessor.
  • No DPC latency issues


Overclocking
  • As of beta BIOS L1.33, ASRock has adopted Asus's adaptive voltage mode which is a hybrid of offset mode (applied only on turbo ratios)
    while on non-turbo state it reverts to default Intel SVID based adaptive vCore scaling. Previously only Asus offered "Adaptive", "Offset", "Manual".
  • The Z390 ITX with the highest attainable power limit and current output with 5 true 60a phases on the core. Though it'll be nicer if ASRock did a 6+1 layout!
  • While the thermal pads from last year's model appeared to be of better quality over the stock pads of this year, the improved VRM sink has overall delivered better cooling than the Fatal1ty ITX.
  • Heat output under heavy load on back side of mobo/VRMs doesn't burn the rear cable management chamber and tightly routed cables of a case like the Fractal Design Nano S at all with no airflow at this region.
    (attainable in real world without package limit or temp throttling).
  • 4000MHz CL16-17 is not a wild target as long as your CPU lottery is decent with a pair of ss Samsung-B IC based RAM kit
  • P/C state overclocking with SpeedShift enabled works without issues


Closing comments
I'm guessing it's cost pressure, minor compromises were made with VRM pad choices but they're probably just cents of savings. Despite this matter, the VRM heat sinking capability is an overall upgrade over Fatal1ty ITX. That aside, ASRock pretty much delivered overall upgrades with a US$10 topup. Since the component choices are quite expensive with upgrades including AC9560, increased chipset costs, dual m.2, better VRM heat sink, added LN2 features/fully unlocked but yet no real upcharge for potential EXOC induced RMAs.. I've seen zero spec downgrades aside from a SATA port count reduction from 6 to 4 accomodate dual M.2 2280 slots. The rear USB IO are still fully controlled by the Intel chipset's native USB controller.

The Phantom ITX BIOS is pretty much the fully 'unlocked' ASRock BIOS. It's a new venture on their ITX series so some new additions in the BIOS are slightly rugged with incoming bug fixes. I've been using the first BIOS till the current beta, the only outstanding issue left only applies to memory training extreme memory overclocks (near LN2 or only "benchmark-only stable" territory) and perhaps hopefully use of lowest possible default IA AC/DC load line values for lower SVID telemetry under offset modes to avoid "VID boosting" on heavy positive/negative VID offset OCs for better control over vCore voltages under load in newer BIOSes. So far, ASRock TSD's been very receptive to user feedback in area of calibration and bug fixing. I've had several personal experiences giving BIOS feedback through their TSD since the Fatal1ty ITX. Minor outstanding issues should be fixed in due course.

US$190 (US$180 last year) is an excellent ask price from ASRock for such a quality ITX. Tweaktown's motherboard editor Steven B. even thinks it's underpriced. The Phantom-ITX is hands down the best Z390 ITX money can buy. The best fit-for-purpose board to pair the i9-9900k with.

Nano 1.1
(17 items)
Z370 Prep
(6 items)
Nano 1.0
(12 items)
CPU
8700K 5300MHz
Motherboard
ASRock Z390 Phantom Gaming-ITX/ac
Motherboard
ASRock Z370 Fatal1ty Gaming-ITX/ac
GPU
1080 Ti
RAM
TridentZ 8GBx2 [email protected]
Hard Drive
970 EVO 2TB
Hard Drive
970 PRO 1TB
Power Supply
EVGA 750W G3
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit | Mint 18.3 | High Sierra 10.13.4
Monitor
Dell Alienware AW3418DW
Keyboard
ThinkPad Compact USB Keyboard with TrackPoint
Mouse
TrackPoint/UltraNav
CPU
8700K 5300MHz
Motherboard
ASUS Maximus X Hero
GPU
UHD 630 (HDMI)
RAM
TridentZ (Black/White) C14
Hard Drive
HGST TravelStar
Cooling
Cryorig R1 Universal
CPU
7700K
Motherboard
ASUS Maximus VIII Impact
GPU
GTX 1070
RAM
G.SKILL Trident Z 16GB
Hard Drive
960 Pro 512GB
Power Supply
EVGA 550W P2
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit
▲ hide details ▲

Last edited by encrypted11; 12-26-2018 at 10:22 PM.
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post #3 of 409 (permalink) Old 04-11-2018, 11:29 AM - Thread Starter
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Archived - ASRock Z370 Fatal1ty Gaming-ITX/ac review
Spoiler!

Nano 1.1
(17 items)
Z370 Prep
(6 items)
Nano 1.0
(12 items)
CPU
8700K 5300MHz
Motherboard
ASRock Z390 Phantom Gaming-ITX/ac
Motherboard
ASRock Z370 Fatal1ty Gaming-ITX/ac
GPU
1080 Ti
RAM
TridentZ 8GBx2 [email protected]
Hard Drive
970 EVO 2TB
Hard Drive
970 PRO 1TB
Power Supply
EVGA 750W G3
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit | Mint 18.3 | High Sierra 10.13.4
Monitor
Dell Alienware AW3418DW
Keyboard
ThinkPad Compact USB Keyboard with TrackPoint
Mouse
TrackPoint/UltraNav
CPU
8700K 5300MHz
Motherboard
ASUS Maximus X Hero
GPU
UHD 630 (HDMI)
RAM
TridentZ (Black/White) C14
Hard Drive
HGST TravelStar
Cooling
Cryorig R1 Universal
CPU
7700K
Motherboard
ASUS Maximus VIII Impact
GPU
GTX 1070
RAM
G.SKILL Trident Z 16GB
Hard Drive
960 Pro 512GB
Power Supply
EVGA 550W P2
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit
▲ hide details ▲

Last edited by encrypted11; 12-26-2018 at 10:23 PM.
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post #4 of 409 (permalink) Old 04-11-2018, 11:30 AM - Thread Starter
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Reserved post

Nano 1.1
(17 items)
Z370 Prep
(6 items)
Nano 1.0
(12 items)
CPU
8700K 5300MHz
Motherboard
ASRock Z390 Phantom Gaming-ITX/ac
Motherboard
ASRock Z370 Fatal1ty Gaming-ITX/ac
GPU
1080 Ti
RAM
TridentZ 8GBx2 [email protected]
Hard Drive
970 EVO 2TB
Hard Drive
970 PRO 1TB
Power Supply
EVGA 750W G3
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit | Mint 18.3 | High Sierra 10.13.4
Monitor
Dell Alienware AW3418DW
Keyboard
ThinkPad Compact USB Keyboard with TrackPoint
Mouse
TrackPoint/UltraNav
CPU
8700K 5300MHz
Motherboard
ASUS Maximus X Hero
GPU
UHD 630 (HDMI)
RAM
TridentZ (Black/White) C14
Hard Drive
HGST TravelStar
Cooling
Cryorig R1 Universal
CPU
7700K
Motherboard
ASUS Maximus VIII Impact
GPU
GTX 1070
RAM
G.SKILL Trident Z 16GB
Hard Drive
960 Pro 512GB
Power Supply
EVGA 550W P2
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit
▲ hide details ▲

Last edited by encrypted11; 12-26-2018 at 10:21 PM.
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"How to" section (Not endorsed by ASRock)

1. Prevent WiFi bandwidth throttling on Intel 8000 - 9000 WiFi cards
With the default settings, there may be brief occassions where its bandwidth throughput tanks to <100Mbps.

  • Search for device "Device Manager" via start menu > head to the Intel AC-8260> advanced
  • Reduce "Roaming aggressiveness" to medium or medium-low for the wireless AP scanning will help with consistency.
  • Disable MIMO PowerSave Mode > No SMPS

The Intel AC 8260 default settings are mostly tuned for maximum power savings than raw performance since it is designed mainly to fit laptops so this tweaks will be very beneficial.
Spoiler!



2. BIOS settings for using P/C States (even while overclocked)
(dynamic frequency and voltages depending on load)

P/C state overclocking with dynamic frequency and voltage scaling works very well with "offset" and "auto" voltage modes.
It works perfectly regardless of set multiplier behaviour ("Per core", "Specific per core" and "All core"). Is there an incentive to enabling speedshift? Yes, no, maybe . The frequency transitions are very quick relative to Speed Step (EIST) though.


Applicable to Windows 10 Redstone+ builds and Skylake+ architectures

Based on testing through actual use, I'm recommending the following baseline power management settings required for SpeedShift to work even under overclocked conditions. By doing so, you're able to relegate the full use of power management to the OS through the Balanced and High Performance power plans. You can expect CPU package power draw as low as ~5W when used in conjunctioned with Balanced.

OC Tweaker\CPU Configuration
● Intel SpeedStep Technology: Enabled (This is a mandatory flag for Speed Shift (HWP) to work on ASRock Z370)
● Intel SpeedShift Technology: Enabled

Advanced\CPU Configuration
● CPU C States Support: Enabled
● Enhanced Halt State (C1E): Auto/Enabled
● CPU C3 State Support: Auto/Enabled
● CPU C6 State Support: Auto/Enabled
● (Optional) CPU C7 State Support: Auto/Enabled
● (Optional) Package C State Support: Enabled

However if you're experiencing OC stability issues, you may consider disabling deeper C States that selectively shut off more processor logic under low usage (C7 and Package C States). If it doesn't help, you may consider disabling C6 or power management overall. Do keep in mind that power management typically ranks last on the list of "to-do's" while ascertaining OC stability.



I'm using SpeedShift in conjunction with the following multiplier ratios, do note the CPU specimen below has a low/very low VID table and a moderate positive offset was required to hit my target vCore. (Offset Values are heavily chip dependent)
Spoiler!

Nano 1.1
(17 items)
Z370 Prep
(6 items)
Nano 1.0
(12 items)
CPU
8700K 5300MHz
Motherboard
ASRock Z390 Phantom Gaming-ITX/ac
Motherboard
ASRock Z370 Fatal1ty Gaming-ITX/ac
GPU
1080 Ti
RAM
TridentZ 8GBx2 [email protected]
Hard Drive
970 EVO 2TB
Hard Drive
970 PRO 1TB
Power Supply
EVGA 750W G3
Cooling
AquaComputer
Cooling
HardwareLabs
Cooling
Bitspower
Cooling
EKWB
Case
Fractal Design Nano S
Operating System
Windows 10 Pro 64-Bit | Mint 18.3 | High Sierra 10.13.4
Monitor
Dell Alienware AW3418DW
Keyboard
ThinkPad Compact USB Keyboard with TrackPoint
Mouse
TrackPoint/UltraNav
CPU
8700K 5300MHz
Motherboard
ASUS Maximus X Hero
GPU
UHD 630 (HDMI)
RAM
TridentZ (Black/White) C14
Hard Drive
HGST TravelStar
Cooling
Cryorig R1 Universal
CPU
7700K
Motherboard
ASUS Maximus VIII Impact
GPU
GTX 1070
RAM
G.SKILL Trident Z 16GB
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Last edited by encrypted11; 12-27-2018 at 04:55 AM.
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post #6 of 409 (permalink) Old 04-11-2018, 11:34 AM
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Awesome man thanks alot for this! I just purchased the same board from newegg and will be building my new machine as soon as the parts come. This post will come in handy!
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post #7 of 409 (permalink) Old 04-16-2018, 02:17 PM
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glad to see you doing this!!! Taichi owner checking in!!

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post #8 of 409 (permalink) Old 04-16-2018, 03:30 PM
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Thanks for this! I've the Taichi mobo and settings are identical to me. I've yet to understand cpu offset voltage. Tried offset, but values weren't consistent. I noticed high spike in vcore, then I couldn't be bothered and settled for fixed.

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post #9 of 409 (permalink) Old 04-16-2018, 04:48 PM
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Nice Great job.

Have myself the Taichi Z370 & i7-8700K Just tweaking my OC at the moment. I will drop some setting in here when i'm done.

System: Intel i7 8700K delidded Griz | ASRock Z370 Taichi | Gigabyte GTX 1080 G1 gaming 8Gb | Samsung 960 EVO NVMe | Samsung 1Tb F2 | WD 1Tb | Corsair 750TX v2 | 32Gb (2x16) Corsair Vengence | Corsair K90 Keyboard | Coolmaster MLP 140 | Corsair Carbide 400C | AOC 27" 2560x1440 | Windows 10 Pro 64bit | Linx10 & Linx 12v64 Tablets - ED: CMDR Aramil Lorrathain 
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post #10 of 409 (permalink) Old 04-16-2018, 06:25 PM - Thread Starter
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It'll be nice to see some settings, they could be a starting point for someone else

Community review of Taichi from @CptKuolio
Asrock Z370 Taichi, overclocking monster, memory going up to 4400Mhz!

Just brief notes on offset mode.
-In layman terms, it's effectively "VID offset mode".
-The offsets required (in mV) will heavily vary from chip to chip; low VID chips may require large positive offsets (reverse is true for high VID chips)
-On my low VID chip, I'd be doing +150mV in order to hit vCores ~1.39-1.4V under AVX loads such as handbrake
-You'd begin from a "stable" fixed vCore OC profile as a baseline, use VID monitoring software including HWinfo/Core Temp for the purpose of recording VID behavior on moderate loads (say CPU-Z, gaming, virus scanners) and heavy load VID requests from loads including video transcode. Determine the estimated amount of "offsets" that are required to hit the target vCore.

2 further things to be aware of:
1. Typically, Target vCore (you'd be targeting near Fixed vCore levels under load) = VID + offsets (mV) + LLC (vdroop)
2. On the Fatal1ty Gaming ITX/ac, the scale could be similar for other ASRock Z370 boards
-LLC1 = +0-16mV overshoot (Tight LLC)
-LLC2 = 40-50mV vdroop on moderate to heavy loads

I don't think LLC3 onwards are well suited for moderate to heavy OCs, both L1 and L2 have legitimate uses for offset mode OC.

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