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

[spartan_hoplite]

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.

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.


Now I am using Intel Core i9 9900k on my G20ci.



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.


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.

[XeonInside]

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.

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.


Now I am using Intel Core i9 9900k on my G20ci.



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.


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.

Hi really impressed by your work, I’ve been struggled with making a 6/8 core CPU w/ HT boot on my G20CI for months, would you be so kind to share the modded BIOS? Thanks in advanced!

[Doom_Slayer]

Hi really impressed by your work, I’ve been struggled with making a 6/8 core CPU w/ HT boot on my G20CI for months, would you be so kind to share the modded BIOS? Thanks in advanced!

Hi can you share your bios, my modded g20ci only work for 8cpu. your help will be greatly appreciated. thank you

[Welsh Whoopee]

it sounds like more power issues, as the i9 9900k is 95tdp and the cpu I assume you had in the system was a i7 6700 which is 65tdp. the power brick is only 180watts to supply the whole motherboard. when you disable the hyper Threading then your pretty much making it a i7 6700.

[spartan_hoplite]

it sounds like more power issues, as the i9 9900k is 95tdp and the cpu I assume you had in the system was a i7 6700 which is 65tdp. the power brick is only 180watts to supply the whole motherboard. when you disable the hyper Threading then your pretty much making it a i7 6700.

it`s not the tdp, but the motherboard vrms cannot handle the high current, gets too hot very fast. i9 9900k without hyper threading is equal to i7 9700k, almost twice faster than i7 6700.