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    ROG Enthusiast Array spartan_hoplite PC Specs
    spartan_hoplite PC Specs
    MotherboardModded ROG G20Ci
    ProcessorIntel Core i9 9900k
    Memory (part number)32gb DDR4
    Graphics Card #1ASUS RTX 2080 Turbo
    MonitorROG PG27vQ
    Storage #1Samsung NvMe 960 500gb + 4 Tb Samsung SSD
    Storage #2Seagate 8 tb Hard Disk Drive
    CaseROG G20
    Keyboard ASUS ROG Claymore
    Mouse ASUS ROG Pugio
    OS Windows 10 Pro

    Join Date
    Nov 2013
    Reputation
    21
    Posts
    73

    G20 with Intel 8th & 9th Gen Coffee Lake Processors

    This started months ago when I opened ver.1402 G20ci Bios with MMtools. I found out that this latest G20ci bios have coffelake intel 8th gen microcode inside. Asus must be prepared for coffe lake processors with G20 intel 200 chipset, but intel didnt allow it.
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    This made me curious to try the coffelake processors with my G20ci. so I tried i5 8400 on it, but it didn`t work.
    With some research finnaly i found that intel not allow intel 200 chipset board to recognize coffe lake processor if the board using intel ME 11.8.x.xxxx firmware, so i downgrade the firmware to 11.7.0.1229 with flash programmer.
    And voila, i5 8400 was detected, and runs well. Then i tried i7 8700, it didnt work, but after learning from here: https://www.win-raid.com/t3413f16-GU...herboards.html finally i am able to make it works.

    Not stopping there, i am also tried 9th gen CPUs by adding another microcode, tried i5 9400f and i7 9700k, both works well.
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    Now I am using Intel Core i9 9900k on my G20ci.
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    The main problem is the Board`s VRM get very hot when running 6 core processor and above. So I put extra heatsinks on the vrms chip.
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    i9 9900k with 16 thread wont run stable, VRM gets too hot easily and pc will shut off automatically when running apps. Then I disabled the Hyper threading and runs with all 8 core without HT, it works well.

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