X870 will not post after switching itself off

[freddie64]

I submitted an RMA request direct to AMD, let's see how it goes.

In the meantime a new PSU arrives today so I'll give that a go. Perhaps the CPU power module on my existing supply is faulty.. doubtful but we will see. If it's not the case then it has to be the CPU (or I have a dead motherboard and the second motherboard was DoA, which again is doubtful).

7600X arrives tomorrow to finally answer that once and for all.

In the meantime I've reconnected the laptop I used previously as my workstation (i7-7700HQ, 16GB RAM, 1050Ti). It'll do but it's certainly not as good as the new one!

Just to let you know. If you RMA direct to AMD you will have to do the same if you ever need to RMA in the future.

Hope the 7600X works, so you finally know where the probem is.

 

[Jerome]

Unfortunately after switching the PSU (I attached the Motherboard and CPU cables only to test) no change.

I've since removed the CPU and sent photos to AMD as per their request. I'll test the 7600X when it arrives tomorrow.. let's hope..

I feel AMD will be able to provide a replacement CPU quicker than a retailer. We'll put that theory to the test.

 

[Jerome]

Over on a different forum it appears that others are also having the same issues with 9800X3D's dying after a few days of usage. One common theme is that it occurs after EXPO is enabled (which is what happened in my case too, albeit the day after).

I wonder if there's a bad batch or issue with quality control to allow this to happen.

 

[Tetras]

Over on a different forum it appears that others are also having the same issues with 9800X3D's dying after a few days of usage. One common theme is that it occurs after EXPO is enabled (which is what happened in my case too, albeit the day after).

I wonder if there's a bad batch or issue with quality control to allow this to happen.

There were reports of 7800X3D CPUs dying with EXPO/XMP enabled in the early days of AM5, for which BIOS updates were issued to cap the voltages.

I'd expect any X870 motherboard to have a very mature BIOS and any/all fixes applied from day 1, since it is just B650E with mandatory USB4.

 

[Jerome]

I'm sure everyone is sat here waiting for an update to this nailbiting saga.

After receiving a 7600X, I can confirm the system now posts. Therefore it was a faulty CPU (which I'm led to believe is exceptionally rare in comparison to other components).

AMD have accepted my RMA and it's going on a trip to the Czech Republic it seems.

Now time to rebuild the PC with my original (ASRock) motherboard and get all this excess hardware sent back (where possible).

 

[Tetras]

After receiving a 7600X, I can confirm the system now posts. Therefore it was a faulty CPU (which I'm led to believe is exceptionally rare in comparison to other components).

Is true, we don't see it on here very often, but glad you got to the bottom of it!

 

[ED209]

Did AMD give any ETA on how long the RMA would take?

Glad you narrowed it down

 

[covenantuk]

Maybe, to be on the ultra safe side, get RAM that doesn't need 1.4v to run at 6000/C30 EXPO?

 

[Jerome]

Is true, we don't see it on here very often, but glad you got to the bottom of it!

Thanks! I'm certainly relieved. Testing performance at 4K it's not too far off the 9800X3D so it'll do in the meantime. I'm not into any competitive games and have a 60Hz 4K monitor so as long it's above 60FPS it suffices.

Did AMD give any ETA on how long the RMA would take?

Glad you narrowed it down

Sadly no. The guy I was in touch with in the ticketing system approved the request and DHL will collect it on Friday (as I'm working until then). Hopefully not too long but I know it's dependant on 9800X3D stock availability.

Maybe, to be on the ultra safe side, get RAM that doesn't need 1.4v to run at 6000/C30 EXPO?

Any recommendations?

I have some 6000/C40 1.35v sticks that I bought originally which I could use. I have the 6000/C30 1.40v sticks in now. I haven't changed any settings besides going from 4800Mhz to 6000Mhz in the BIOS. I'm not overly interested in overclocking or undervolting so whichever RAM works best out of the box honestly.

It's Corsair CMK64GX5M2B6000Z30 (2x 32GB). It's not on the motherboards QVL list admittedly. (Mobo: ASRock X870 Pro RS WiFi)

--

Just to note I've put the case back together with the original motherboard, etc. All works well. So it was certainly only the CPU that failed, for whatever reason.

I appreciate everyone chipping in with advice, it helped keep me sane.

 

[ED209]

Sadly no. The guy I was in touch with in the ticketing system approved the request and DHL will collect it on Friday (as I'm working until then). Hopefully not too long but I know it's dependant on 9800X3D stock availability.

Would like to think that they would keep some aside for situations like this