Asus Crosshair VIII Hero Crashing

Solaris

Solaris

Solaris

Associate
Joined
31 Oct 2006
Posts
2,004
So my PC has started behaving pretty badly, and just wanted to make sure I'm not being an idiot in thinking it's the mobo at fault...

CPU is a 3950x (Cooled by a 360 AIO)
Mem is 32GB (4x 8GB Corsair Vengence RGB 3600)
Mobo BIOS is up to date, and running default settings - I've tried with and without c-states disabled
PSU is a Corsair AX1600 - I didn't buy it, this is a warranty replacement from a smaller unit I was sent because they were out of stock of smaller units.
GPU is an MSI Suprim X 3090

The computer randomly crashes, and it's been happening more and more frequently. It's always when the PC is pretty idle, or I'm doing something light like web browsing or messaging, never when gaming...

Looking at monitoring tools nothing is getting too hot, and I haven't witnessed any voltages getting too low.

So new mobo time??
 
Also, when crashing... The screen will sometimes retain the last image, and sometimes go black, it's pretty random.

The power button locks up, holding it for longer than 10s won't turn the power off to the PC.

The reset button stops working (yes they are wired up correctly).
 
Yeah, I should have said that I already checked the event log and there were zero errors when the crashes happened. Windows didn't even notice...

After discussing this on another forum I got rid of the DOCP (XMP) memory profile and I'm just running the memory under the automatic settings.

That means I'm running 3600Mhz memory at 2666Mhz...

But it's been 100% stable since making the change.

I guess something is wrong with the memory, memory controller, or mobo (SoC VRM or something between the CPU<->RAM) causing instability. Frustrating but I'd prefer a slightly slower stable computer over one that is falling over. I just hope it stays stable till the AM5 platform and Ryzen 7000 series come out!
 
Yeah, I could always "borrow" the two sticks of G.Skill 3600Mhz RAM out of my girlfriend's gaming rig for diagnostics.

If it is the memory controller though I think the CPU has a 3-year AMD warranty on it...
 
Oh wow... I swear those specifications didn't exist when I bought the chip (or I'm blind and totally overlooked them).

Interesting it was running stable for over a year before starting to give issues, guess silicon does degrade over time

I might see how it behaves at 2933mhz.
 
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