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  1. #1
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    high voltage RAM G.Skill Trident Z RGB DDR4 4133 32GB 4x8GB CL17 Maximux hero X

    KIT G.Skill F4-4133C17Q-32GTZR
    VRAM: 1.50v
    VCCIO: 1.40v
    VCCSA: 1.40v

    I am not able to lower these values and get stability.

    what am I doing wrong?
    Thanks in advance
    Last edited by Overthrow; 11-19-2019 at 06:40 PM.

  2. #2
    Administrator Array Silent Scone@ASUS's Avatar
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    4133 with all slots populated can be tough even on T-toplogy motherboards. The amount of SA and IO voltage needed depends on the CPU, too.

    Try Maximus Tweak Mode 2 and see if this aids stability at lower values.

  3. #3
    ROG Guru: Yellow Belt Array
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    My 9900K worked only with 3900 17-17-37

    My 9900KS works with full speed - here is my setup:

    2019/11/05 20:00:53]
    Ai Overclock Tuner [XMP II]
    XMP [XMP DDR4-4140 17-17-17-37-1.40V]
    BCLK Frequency [100.0000]
    ASUS MultiCore Enhancement [Auto – Lets BIOS Optimize]
    SVID Behavior [Auto]
    AVX Instruction Core Ratio Negative Offset [Auto]
    CPU Core Ratio [Auto]
    BCLK Frequency : DRAM Frequency Ratio [Auto]
    DRAM Odd Ratio Mode [Enabled]
    DRAM Frequency [DDR4-4133MHz]
    Xtreme Tweaking [Disabled]
    CPU SVID Support [Auto]
    Maximus Tweak [Mode 2]
    DRAM CAS# Latency [17]
    DRAM RAS# to CAS# Delay [17]
    DRAM RAS# ACT Time [37]
    DRAM Command Rate [2N]
    DRAM RAS# to RAS# Delay L [11]
    DRAM RAS# to RAS# Delay S [4]
    DRAM REF Cycle Time [725]
    DRAM REF Cycle Time 2 [539]
    DRAM REF Cycle Time 4 [332]

    DRAM Refresh Interval [Auto]
    DRAM WRITE Recovery Time [Auto]
    DRAM READ to PRE Time [Auto]
    DRAM FOUR ACT WIN Time [50]
    DRAM WRITE to READ Delay [Auto]
    DRAM WRITE to READ Delay L [Auto]
    DRAM WRITE to READ Delay S [Auto]
    DRAM CKE Minimum Pulse Width [Auto]
    DRAM Write Latency [Auto]
    ODT RTT WR (CHA) [Auto]
    ODT RTT PARK (CHA) [Auto]
    ODT RTT NOM (CHA) [Auto]
    ODT RTT WR (CHB) [Auto]
    ODT RTT PARK (CHB) [Auto]
    ODT RTT NOM (CHB) [Auto]
    ODT_READ_DURATION [Auto]
    ODT_READ_DELAY [Auto]
    ODT_WRITE_DURATION [Auto]
    ODT_WRITE_DELAY [Auto]
    Data Rising Slope [Auto]
    Data Rising Slope Offset [Auto]
    Cmd Rising Slope [Auto]
    Cmd Rising Slope Offset [Auto]
    Ctl Rising Slope [Auto]
    Ctl Rising Slope Offset [Auto]
    Clk Rising Slope [Auto]
    Clk Rising Slope Offset [Auto]
    Data Falling Slope [Auto]
    Data Falling Slope Offset [Auto]
    Cmd Falling Slope [Auto]
    Cmd Falling Slope Offset [Auto]
    Ctl Falling Slope [Auto]
    Ctl Falling Slope Offset [Auto]
    Clk Falling Slope [Auto]
    Clk Falling Slope Offset [Auto]
    DRAM RTL INIT value [Auto]
    DRAM RTL (CHA DIMM0 Rank0) [Auto]
    DRAM RTL (CHA DIMM0 Rank1) [Auto]
    DRAM RTL (CHA DIMM1 Rank0) [Auto]
    DRAM RTL (CHA DIMM1 Rank1) [Auto]
    DRAM RTL (CHB DIMM0 Rank0) [Auto]
    DRAM RTL (CHB DIMM0 Rank1) [Auto]
    DRAM RTL (CHB DIMM1 Rank0) [Auto]
    DRAM RTL (CHB DIMM1 Rank1) [Auto]
    DRAM IOL (CHA DIMM0 Rank0) [Auto]
    DRAM IOL (CHA DIMM0 Rank1) [Auto]
    DRAM IOL (CHA DIMM1 Rank0) [Auto]
    DRAM IOL (CHA DIMM1 Rank1) [Auto]
    DRAM IOL (CHB DIMM0 Rank0) [Auto]
    DRAM IOL (CHB DIMM0 Rank1) [Auto]
    DRAM IOL (CHB DIMM1 Rank0) [Auto]
    DRAM IOL (CHB DIMM1 Rank1) [Auto]
    CHA IO_Latency_offset [Auto]
    CHB IO_Latency_offset [Auto]
    CHA RFR delay [Auto]
    CHB RFR delay [Auto]
    Early Command Training [Auto]
    SenseAmp Offset Training [Enabled]
    Early ReadMPR Timing Centering 2D [Enabled]
    Read MPR Training [Enabled]
    Receive Enable Training [Enabled]
    Jedec Write Leveling [Enabled]
    Early Write Time Centering 2D [Auto]
    Early Read Time Centering 2D [Auto]
    Write Timing Centering 1D [Enabled]
    Write Voltage Centering 1D [Auto]
    Read Timing Centering 1D [Auto]
    Dimm ODT Training* [Auto]
    Max RTT_WR [ODT Off]
    DIMM RON Training* [Auto]
    Write Drive Strength/Equalization 2D* [Disabled]
    Write Slew Rate Training* [Auto]
    Read ODT Training* [Auto]
    Read Equalization Training* [Auto]
    Read Amplifier Training* [Auto]
    Write Timing Centering 2D [Auto]
    Read Timing Centering 2D [Auto]
    Command Voltage Centering [Auto]
    Write Voltage Centering 2D [Auto]
    Read Voltage Centering 2D [Auto]
    Late Command Training [Auto]
    Round Trip Latency [Auto]
    Turn Around Timing Training [Disabled]
    Rank Margin Tool [Disabled]
    Memory Test [Disabled]
    DIMM SPD Alias Test [Auto]
    Receive Enable Centering 1D [Auto]
    Retrain Margin Check [Disabled]
    Write Drive Strength Up/Dn independently [Disabled]
    tRDRD_sg [Auto]
    tRDRD_dg [Auto]
    tRDWR_sg [Auto]
    tRDWR_dg [Auto]
    tWRWR_sg [Auto]
    tWRWR_dg [4]
    tWRRD_sg [Auto]
    tWRRD_dg [Auto]
    tRDRD_dr [Auto]
    tRDRD_dd [Auto]
    tRDWR_dr [Auto]
    tRDWR_dd [Auto]
    tWRWR_dr [Auto]
    tWRWR_dd [Auto]
    tWRRD_dr [Auto]
    tWRRD_dd [Auto]
    TWRPRE [Auto]
    TRDPRE [Auto]
    tREFIX9 [Auto]
    OREF_RI [Auto]
    MRC Fast Boot [Auto]
    DRAM CLK Period [Auto]
    Memory Scrambler [Enabled]
    Channel A DIMM Control [Enable both DIMMs]
    Channel B DIMM Control [Enable both DIMMs]
    Trace Centering [Disabled]
    MCH Full Check [Auto]
    Training Profile [Auto]
    DLLBwEn [Auto]
    DRAM SPD Write [Disabled]
    XTU Setting [Auto]
    CPU Load-line Calibration [Auto]
    Synch ACDC Loadline with VRM Loadline [Disabled]
    CPU Current Capability [Auto]
    CPU VRM Switching Frequency [Auto]
    VRM Spread Spectrum [Auto]
    CPU Power Duty Control [T.Probe]
    CPU Power Phase Control [Auto]
    CPU Power Thermal Control [120]
    CPU VRM Thermal Control [Auto]
    DRAM Current Capability [100%]
    DRAM Switching Frequency [Auto]
    CPU Core/Cache Boot Voltage [Auto]
    DMI Boot Voltage [Auto]
    Core PLL Boot Voltage [Auto]
    CPU System Agent Boot Voltage [1.29375]
    CPU VCCIO Boot Voltage [1.29375]

    PLL Termination Boot voltage [Auto]
    CPU Standby Boot Voltage [Auto]
    Intel(R) SpeedStep(tm) [Auto]
    Turbo Mode [Enabled]
    Long Duration Package Power Limit [Auto]
    Package Power Time Window [Auto]
    Short Duration Package Power Limit [Auto]
    IA AC Load Line [Auto]
    IA DC Load Line [Auto]
    TVB Voltage Optimizations [Auto]
    Realtime Memory Timing [Disabled]
    FCLK Frequency for Early Power On [Auto]
    Initial BCLK Frequency [Auto]
    BCLK Amplitude [Auto]
    BCLK Slew Rate [Auto]
    BCLK Spread Spectrum [Auto]
    BCLK Frequency Slew Rate [Auto]
    DRAM VTT Voltage [Auto]
    VPPDDR Voltage [Auto]
    DMI Voltage [Auto]
    Core PLL Voltage [Auto]
    Internal PLL Voltage [Auto]
    GT PLL Voltage [Auto]
    Ring PLL Voltage [Auto]
    System Agent PLL Voltage [Auto]
    Memory Controller PLL Voltage [Auto]
    PLL Bandwidth [Auto]
    Eventual DRAM Voltage [Auto]
    Eventual CPU Standby Voltage [Auto]
    Eventual PLL Termination Voltage [Auto]
    Eventual DMI Voltage [Auto]
    Package Temperature Threshold [Auto]
    Regulate Frequency by above Threshold [Auto]
    Cooler Efficiency Customize [Keep Training]
    Cooler Re-evaluation Algorithm [Normal]
    Optimism Scale [100]
    CPU Core/Cache Current Limit Max. [Auto]
    Ring Down Bin [Auto]
    Min. CPU Cache Ratio [Auto]
    Max CPU Cache Ratio [Auto]
    BCLK Aware Adaptive Voltage [Enabled]
    CPU Core/Cache Voltage [Auto]
    DRAM Voltage [1.4500]
    CPU VCCIO Voltage [1.25000]
    CPU System Agent Voltage [1.25000]
    PLL Termination Voltage [Auto]
    PCH Core Voltage [1.05000]
    CPU Standby Voltage [1.050]
    Last edited by Mappi75; 11-20-2019 at 04:48 PM.
    Intel Core i9-7980XE @ Noctua NH-D15S | ASUS ROG Rampage VI Extreme | MSI GTX 1080 Ti Lightning Z SLI | G.Skill 128GB RAM, DDR4-3200, CL14 | Samsung SSD 960 PRO 2TB | 2x Samsung SSD 840 PRO (512GB) + 2x Samsung SSD 830 (512GB) | Plextor PX-L890SA | Corsair AX1500i Titanium | Lian Li TYR PC-X2000F @bequiet Silentwings USC |

    Intel Core i7-6950X @ Noctua NH-D15S | Asus ROG Rampage V10 Extreme | MSI GTX 1080 Ti Lightning Z | Kingston 128GB RAM, DDR4-2666, CL15 | Seasonic 1.000 Platinum |

  4. #4
    ROG Guru: Yellow Belt Array
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    Testing now the G.Skill 32GB 4266 17-18-18-38 Kit - first impression: more difficult to get stable and needs more voltages.

    Running now MemTest Pro (which works best for me finding errors).
    Intel Core i9-7980XE @ Noctua NH-D15S | ASUS ROG Rampage VI Extreme | MSI GTX 1080 Ti Lightning Z SLI | G.Skill 128GB RAM, DDR4-3200, CL14 | Samsung SSD 960 PRO 2TB | 2x Samsung SSD 840 PRO (512GB) + 2x Samsung SSD 830 (512GB) | Plextor PX-L890SA | Corsair AX1500i Titanium | Lian Li TYR PC-X2000F @bequiet Silentwings USC |

    Intel Core i7-6950X @ Noctua NH-D15S | Asus ROG Rampage V10 Extreme | MSI GTX 1080 Ti Lightning Z | Kingston 128GB RAM, DDR4-2666, CL15 | Seasonic 1.000 Platinum |

  5. #5
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    What is the difference between mode 1 and mode 2?

  6. #6
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    Mode 2 set the RTL/IOL faster, it´s more difficult to boot this, on my Wifi XI i get Mode2 stable to 4x8GB4133hz and Mode1 4400Mhz.

    So ever use Mode 1 by 4Dimm, for high Frequency stable by 4 Dimm you Need a good CPU, also good Ram.
    Most important i Think is the IMC of the CPU.
    With 4x8GB 4266CL19 GTZR i have reached Allstable 4400CL17-19, with Patriot 4400CL19 Allstable 4400CL17-17 with Sub´s 65.5k 35,4ns.

    The Board is also important tested 3Wifi XI only one Board have done Allstable 4400, one 4350, the first one was bad issue Socket.

    Here you have Timings this is with Mode1 RoundTrip Latency on RTL/IOL Auto, easier is Mode1Offset 16/16 or 18/18.
    Click image for larger version. 

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    Last edited by Phoenix2000; 11-25-2019 at 08:38 PM.

  7. #7
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    Imc cpu?

  8. #8
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    Memory Controller, i Need Bios IO 1,325V and 1,3375V SA for my Setting and 1,5V DRam.

    In the Most Cases, a better CPU with "low VCore" have a better Memory Controller but it dont must be.
    Last edited by Phoenix2000; 11-25-2019 at 10:24 PM.

  9. #9
    Administrator Array Silent Scone@ASUS's Avatar
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    Quote Originally Posted by Phoenix2000 View Post
    Mode 2 set the RTL/IOL faster, it´s more difficult to boot this, on my Wifi XI i get Mode2 stable to 4x8GB4133hz and Mode1 4400Mhz.

    So ever use Mode 1 by 4Dimm, for high Frequency stable by 4 Dimm you Need a good CPU, also good Ram.
    Most important i Think is the IMC of the CPU.
    With 4x8GB 4266CL19 GTZR i have reached Allstable 4400CL17-19, with Patriot 4400CL19 Allstable 4400CL17-17 with Sub´s 65.5k 35,4ns.

    The Board is also important tested 3Wifi XI only one Board have done Allstable 4400, one 4350, the first one was bad issue Socket.

    Here you have Timings this is with Mode1 RoundTrip Latency on RTL/IOL Auto, easier is Mode1Offset 16/16 or 18/18.
    Click image for larger version. 

Name:	aa.jpg 
Views:	0 
Size:	129.1 KB 
ID:	83180

    Hello, Mode 2 also sets other parameters that individual CPUs and modules can sometimes prefer. Always best to try both Tweak Modes when experiencing POST or stability issues.

  10. #10
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    mode 2 = error code 55

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