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ASUS Prime Z390-A + 16gb DDR4 4266 GSKILL (F4-4266C19D-16GTZ) = XMP dont works

marcelogn
Level 7
Hi there
I have this computer
i7 9900k
ASUS Prime Z390-A
2x8gb (16gb) DDR4 4266 GSKILL (F4-4266C19D-16GTZ)

XMP dont works.

I tried too much to set frequency to 4266. Dont works.
I tried 4200mhz, 4133mhz, 4100mhz... dont works

i make it works in 4000mhz 17-17-17-37, it was fine, but after 2 weeks, i got BSOD (blue screen of death)...it become instable
now im working in 4000mhz 19-19-19-39

Can you help me to make it works with a better configuration?
Maybe works in 4266?
3,038 Views
9 REPLIES 9

marcelogn
Level 7
i update bios to the newest version (1005)
same thing

the best working configuration is 4000 19-19-19-39

no help?
no support?
i buyed an expensive ASUS motherboard, its expensive...
and i got no support, no help?
im thinking to buy another motherboard of a different manufacture, so

That's not expensive motherboard, that's like the cheapest board that ASUS makes. I don't think that board was meant for 9900k. I wouldn't overclock it past 5G, I don't think those VRM was meant for that chip.

Second, that board doesn't support your ram in 2 Dimm mode :

https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/PRIME_Z390-A/PRIME_Z390-A_Memory_QVL_20190225.pdf?_ga=...

You can make that work only with all 4 slots populated.

Maximum frequency for 2 Dimms is 4000

If you wanted to run high frequencies you had to buy Gene or Apex boards.

ninezerofive wrote:
That's not expensive motherboard, that's like the cheapest board that ASUS makes

cheap in your country
extreme expensive in mine
you dont have any idea about that
expensive memorys too, too much

Silent_Scone
Super Moderator
4266 requires a strong IMC, and more often than not will require manual tuning. Furthermore, all 4 DIMM boards use a T-Topology trace layout which means 2 DIMM overclocking at that those frequencies is tough (over 4K is not likely). You're better dialing things in as you are at 4K, and working on timings.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Silent Scone@ASUS wrote:
4266 requires a strong IMC, and more often than not will require manual tuning. Furthermore, all 4 DIMM boards use a T-Topology trace layout which means 2 DIMM overclocking at that those frequencies is tough (over 4K is not likely). You're better dialing things in as you are at 4K, and working on timings.


if i buy another 2x8gb DDR4 4266 memory kit (to use the 4 memory slots), would it works in 4266? or in 4133?
will it work better?

marcelogn wrote:
if i buy another 2x8gb DDR4 4266 memory kit (to use the 4 memory slots), would it works in 4266? or in 4133?
will it work better?


Hard to say, it might, but always better is to buy a 4x kit straight away.

marcelogn wrote:
if i buy another 2x8gb DDR4 4266 memory kit (to use the 4 memory slots), would it works in 4266? or in 4133?
will it work better?


Almost certainly not. Combining kits with that speed and density isn't advised. Always good to remember that vendors bin kits in the density that they are sold in.

If you want to run 4266, you'll need to purchase a 4 DIMM kit that is validated for that board. Even then, things are not guaranteed.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Hi there.
I buyed a new 2x8gb DDR4 4266 (F4-4266C19D-16GTZR) kit.... a new identical kit.
Now i have two F4-4266C19D-16GTZR kits (4x8gb)

I installed.
i was surprised when the system booted with XMP1 (4266).. the motherboard boots, but no success, its not stable... i got errors during windows 10 starting.
it never booted with XMP1 (4266) before (with 2 sticks - 2x8gb)....
With 4x8gb, it boots...

i tried:
- XMP1 4266 - boots, but i got errors on windows memory diagnostic test
- XMP2 4266 - boots, but i got errors on windows memory diagnostic test
- XMP1 changing frequence to 4133 - 19-19-19-39 2N - boots, but i got errors on windows 10 memory diagnostic test
- XMP2 changing frequence to 4133 - 19-19-19-39 2N - boots, but i got errors on windows 10 memory diagnostic test
- XMP1 changing frequence to 4000 - 19-19-19-39 2N - boots, but i got errors on windows 10 memory diagnostic test
- XMP1 changing frequence to 3866 - 19-19-19-39 2N - boots, but i got errors on windows 10 memory diagnostic test
When i set memorys to AUTO (2133mhz) it works fine, i got no errors in the windows 10 memory diagnostic
im disappointed
any idea??