New 9700K and Asus z390 - not stable at stock?

m3csl2004 · 22 Dec 2018 at 22:51

Hi all,

I'm really struggling with my new upgrade, and would appreciate some close-to-Christmas wisdom.

My spec:
Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
Asus TUF Z390-PLUS GAMING
2x4GB TeamGroup Dark Pro 3000MHz CL15

Effectively, I am having to lock my max CPU multiplier to 36 to make my system stable with everything on auto. As I understood it, this system should boost to well beyond that when required - without any instability. If I do not lock the multiplier it BSOD's in windows.

My temps look fine in hardware monitor, and the system works great at 3.6 GHz. Clearing the CMOS does nothing. Does this sound like user error? I haven't had to play with any rig to get it stable at stock?

tamzzy · 22 Dec 2018 at 23:21

m3csl2004 said:
Asus TUF Z390-PLUS GAMING

that's because it has trash VRMs

https://www.overclock.net/forum/27657582-post2156.html#/topics/1638955?page=216&gid=1&pid=1
you've got a mobo that is good for a 9600k, not a 9700k/9900k.
looking a the list, you'd want a board in the white list at minimum. preferably in the green list

m3csl2004 · 22 Dec 2018 at 23:30

I am not disputing what you are saying. However, the system cannot complete POST now, so I actually think either the board or the chip (or both!) are faulty.

Might have to take this up with OCUK support.

tamzzy · 22 Dec 2018 at 23:33

m3csl2004 said:
However, the system cannot complete POST now, so I actually think either the board or the chip (or both!) are faulty.

ah. try just running cpu, board and ram (using the igpu). don't even plug in the ssd/hdd. if it still can't post then yeah, issue with one of those 3

m3csl2004 · 22 Dec 2018 at 23:40

Have tried iGPU, 2 other GPUs, 1 stick of ram. Nothing else plugged in.

My RAM is known working, as are my GPUs. Think this is going back.

The Gigabyte boards seem well reviewed, what board would you have picked at a similar cost?

tamzzy · 22 Dec 2018 at 23:43

m3csl2004 said:
what board would you have picked at a similar cost?

easy.

My basket at Overclockers UK:

1 x Gigabyte Z390 Gaming SLI Intel Z390 (Socket 1151) DDR4 ATX Motherboard= £154.99

Total: £165.49 (includes shipping: £10.50)

m3csl2004 · 23 Dec 2018 at 00:07

I've asked OCUK if they will swap my board for the Gigabyte board, will hopefully end my troubles.

Thanks for taking the time to reply.