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  1. #1
    New ROGer Array
    Join Date
    Jul 2017

    Z270i Gaming Strix. Memory manual timing setup. Confused with names.

    I have an issue with mine LPX 16GB (2x8GB) DDR4 DRAM 3200MHz C16 Memory Kit - Black (CMK16GX4M2B3200C16) . As long as it is default frequency, everything works fine. When I turn on XMP the machine starts and works OK too, but only until next restart. After restart screen goes black and I need to reset BIOS to make it work again.

    If my memory tech-specs are:

    Performance Profile - XMP 2.0

    SPD Latency - 15-15-15-36

    SPD Speed - 2133MHz

    SPD Voltage - 1.2V

    Speed Rating - PC4-25600 (3200MHz)

    Tested Latency - 16-18-18-36

    Tested Speed - 3200MHz

    Tested Voltage - 1.35V

    The naming of different timing fields in MB BIOS is rather confusing, as it is not standard naming: CL TRCD TRP TRAS? What fields should I manually change according to "Tested Latency" to make it work on my system with 3200MHz speed?

    Last edited by Simpetus; 07-11-2017 at 12:48 AM.

  2. #2
    ROG Guru: Grand Master Array
    Join Date
    Oct 2012

    DRAM CAS# Latency - 16
    DRAM RAS# to CAS# Delay - 18
    DRAM RAS# ACT Time - 36
    DRAM Command Rate - 2

    Also note that since you're running DDR4 3200 memory, you might need to tweak your SA & IO voltages. Here's a table to guide you along the way.

    DDR4 frequency range Required CPU VCCIO Voltage range Required CPU System Agent Voltage range
    DDR4-2133 ~ DDR4-2800 1.05V ~ 1.15V 1.05V ~ 1.15V
    DDR4-2800 ~ DDR4-3600 1.10V ~ 1.25V 1.10V ~ 1.30V
    DDR4-3600 ~ DDR4-4266 1.15V ~ 1.30V 1.20V ~ 1.35V

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