mATX board for 5900x

[Subliminal Aura]

Hi guys,

What a **** up as I'm really disappointed with my build and 'think' the issue is the board. I'll be in touch with Asus soon to try my luck. Pity that the return window expired a couple of days ago

The problem being that the network and SATA controllers disappear randomly, I've tried nearly everything like unplugging devices/components

I also see message about USB overcurrent which seems to be a known issue

Specs

Asus Prime B550M-A
RTX 3070 FE (It's not this as I've tried a GTX 980, RTX 3060)
32GB Neo Z
Samsung 870 QVO 2TB
WD Black SN850 2TB
XPG SX8200 1TB
Corsair QL120 with node core (will try unplugging this tonight)
Kraken X53 (will see if I can get that off the USB too)
Corsair SF750 Platinum (I can't rate this PSU highly enough)

.........

Ideally I want to stick to a mATX or ITX board due to the case but if all these B550 boards are flawed then maybe a full rebuild is needed ?

Any help most welcome - I wouldn't be reaching out here as I'm pulling my hair out over the problems I'm having

Thanks guys

 

[Subliminal Aura]

Thanks for the reply mate.

I literally got a new motherboard this morning (MSI mag mortar b550m) and just did a rebuild. Currently typing a response to you on the machine and it looks perfect - no problems so far. Going to run some more benchmarks which ironically the new board is already performing better at.

All in all I'm very disappointed with Asus - normally they're not this bad but the Prime board is awful - I saw some reviews on youtube that claim test failures on VRM temps

 

[Subliminal Aura]

Yup first MSI board in over 20 years (they used to be naff back in the day) and I'm impressed.

Next time I best not skimp and save on the mobo but in hindsight the MSI board was only £40 more than the Prime but infinitely better built.

I'm happy that I found the root cause, fortunately the forest gave me a refund despite being a week past the return window.

I did however air my experience to Asus support which just fell on deaf ears :/

 

[Subliminal Aura]

I have an MSI MAG B550M MORTAR WIFI with a 5900X in it, had it for about a year now. Works flawlessly for me except that you get a no-boot at anything above 3200 on the RAM and for that matter changing any setting at all with the RAM. I had planned to overclock the RAM or tighten the timings, but had to give up. Frankly it probably wasn't going to be worth it anyway. I read posts about other people having exactly the same issues, and it seems to be specific to Samsung B-Die. I've done a couple of BIOS updates since I got it, maybe that would help, I don't know. But in the end, it is an incredibly fast machine as it is with the default XMP 3200 profile, so I set aside my desire to tweak and just enjoy the superb stock performance.

No such issues running the neos at stock 3600....
I haven't tried overclocking.... Are the Samsung's on the boards compatibility list ?