Tuesday, September 8th 2026

Redditor's AMD Ryzen 9 9950X3D Reportedly Dies Shortly After Changing Motherboards

A Ryzen 9 9950X3D has reportedly died just an hour after being moved into an ASUS ROG Crosshair X670E Hero motherboard. According to Reddit user SpecialistConcept423, posting in r/GamersNexus, the chip had been running fine for about a year and a half in an ASRock X670E Taichi Carrara before the swap. After switching to the new board, no manual overclocking or voltage tweaks were applied; only one of the board's built-in memory presets was enabled for a set of SK hynix 6200 MHz modules. After saving that setting and rebooting, the board threw a "00" Q-Code and refused to post. Pulling the CPU and inspecting it revealed two brown marks on its contacts, which all but confirmed the catastrophic failure.

Things got stranger when the user resorted to an older Ryzen 5 8500G that had previously worked fine on the same board. That chip apparently now throws a "4D" code too, pointing at the motherboard itself as the culprit, not just the CPU. There's no confirmation yet on whether a faulty BIOS, a bad batch of boards, or something else is to blame, and ASUS hasn't commented on this specific case. It is worth noting that the ASUS board was not new, and it had undergone USB-related repairs and a BIOS rewrite. The user has since contacted AMD in Brazil for an RMA, but has shared no updates yet.
Interestingly, this isn't the first CPU failure tied to this exact board either. We covered a Ryzen 7 7800X3D that swelled and burned on the same ROG Crosshair X670E Hero model just days ago, and last year ASRock also admitted that overly aggressive PBO current limits fried a wave of Ryzen 9000 chips on its own boards. It's too early to say if these share a root cause, but there is certainly a pattern here. In this particular case, the X670E Hero claimed not one but two CPUs, and it only needed a single setting change to do so.
Source: Reddit
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207 Comments on Redditor's AMD Ryzen 9 9950X3D Reportedly Dies Shortly After Changing Motherboards

#26
AusWolf
Dr. Droat least on Intel.
Exactly. This is not Intel. Like you said, you're limited by the fabric on AMD. Dual rank 6200 is pretty high here, it's even out of my B650 board's maximum overclock frequency (according to the product page).
Posted on Reply
#27
Visible Noise
AusWolfGreat! Thanks for coming. :)
Glad I could clarify that yes, things can be AMD’s fault, regardless of your feels.

It’s not healthy to have your ego tied to a brand. Especially one as toxic as AMD.
Posted on Reply
#28
lexluthermiester
Dr. DroThe RAM is fine, the settings are not extreme or anything.
Exactly.
Posted on Reply
#29
AusWolf
Visible NoiseGlad I could clarify that yes, things can be AMD’s fault, regardless of your feels.

It’s not healthy to have your ego tied to a brand. Especially one as toxic as AMD.
You're an invaluable trove of information. I don't know what I'd do without your infinite wisdom.

Do you actually have something to say on topic? Maybe you know why the CPU died? Perhaps you were there and saw it happen?
Posted on Reply
#30
Hecate91
I think it's plausible the asrock board damaged the CPU, and the asus one finished it off with auto ram tweaking. Those auto ram OC settings are bad no matter if you're using AMD or Intel.
But oh, right, only AMD can be toxic, glad we're back to this nonsense again. The irony of getting into an ego trip over a brand.
Posted on Reply
#31
Dr. Dro
AusWolfExactly. This is not Intel. Like you said, you're limited by the fabric on AMD. Dual rank 6200 is pretty high here, it's even out of my B650 board's maximum overclock frequency (according to the product page).
The better quality X870 and X870E motherboards have been capable of running 8000-8200 range for some time now, it's just questionable effort because you cannot run uclk<>memclk. It seems to have a tad bit better latency than 6000ish at similar latencies (in terms of ns, not absolute cycles), but that'd be about it. Hopefully Olympic Ridge is better at this.

I plan on getting a Tachyon or Apex for my 9850X3D eventually, but it'll take a little time.
Posted on Reply
#32
lexluthermiester
Visible NoiseGlad I could clarify that yes, things can be AMD’s fault, regardless of your feels.

It’s not healthy to have your ego tied to a brand. Especially one as toxic as AMD.
Ok, now you're trolling. Intel had issues too, maybe you've heard of them. The point is, pointing the finger of blame at the wrong thing is very much less than productive.

This is an AMD CPU defect problem, not a motherboard problem.
Posted on Reply
#33
AusWolf
Dr. DroThe better quality X870 and X870E motherboards have been capable of running 8000-8200 range for some time now, it's just questionable effort because you cannot run uclk<>memclk. It seems to have a tad bit better latency than 6000ish at similar latencies (in terms of ns, not absolute cycles), but that'd be about it. Hopefully Olympic Ridge is better at this.

I plan on getting a Tachyon or Apex for my 9850X3D eventually, but it'll take a little time.
I've heard they did something on 800 series boards to reinforce the RAM circuitry or something. At least their memory recommendations seem to be higher than 600 series.
Posted on Reply
#34
Dr. Dro
AusWolfI've heard they did something on 800 series boards to reinforce the RAM circuitry or something. At least their memory recommendations seem to be higher than 600 series.
It's mostly the revised designs overall, similar to Z690 and Z790, improved PCB traces and slightly higher material quality. Chipset in itself has little to do with it
Posted on Reply
#35
Visible Noise
lexluthermiesterOk, now you're trolling. Intel had issues too, maybe you've heard of them. The point is, pointing the finger of blame at the wrong thing is very much less than productive.

This is an AMD CPU defect problem, not a motherboard problem.
I have a 13900K. I’m not defending Intel’s honor in every thread.

AMD has an issue with burning up CPUs. The sooner they - and their water carriers - admit it, the better.
Posted on Reply
#36
AusWolf
Dr. DroIt's mostly the revised designs overall, similar to Z690 and Z790, improved PCB traces and slightly higher material quality. Chipset in itself has little to do with it
The chipset has nothing to do with RAM anyway. But yeah, the traces have been improved. That's why 800 series boards can do higher speeds.

Here's my board's data sheet:
Visible NoiseI have a 13900K. I’m not defending Intel’s honor in every thread.

AMD has an issue with burning up CPUs. The sooner they - and their water carriers - admit it, the better.
So if one is trying to investigate the root cause of an issue instead of immediately pointing fingers and frothing like a religious zealot, that means one is trying to defend a company's honour in your eyes. I think that attitude says more about you than any of us.
Posted on Reply
#37
lexluthermiester
Visible NoiseAMD has an issue with burning up CPUs.
No one is denying that. But let's face facts, this was a VERY limit situation unlike the Intel situation which was systemic due to the flawed chemistry issues with their substrate materials at the time. Whatever problem is happening with these AMD CPU's is limited to a specific batch or set of batches.
AusWolfHere's my board's data sheet:
And you'll notice that ONLY the 4800 speeds are official JEDEC specs. That does not mean faster is harmful to the board or CPU. Just sayin.
Posted on Reply
#38
AusWolf
lexluthermiesterNo one is denying that. But let's face facts, this was a VERY limit situation unlike the Intel situation which was systemic due to the flawed chemistry issues with their substrate materials at the time. Whatever problem is happening with these AMD CPU's is limited to a specific batch or set of batches.
Not to mention this is the first time we actually heard any word about the BIOS settings used, and changed before the CPU died. It's hard to find the culprit when half of the necessary information is unknown.
Posted on Reply
#39
Tyler-98-W68
AusWolfYou're an invaluable trove of information. I don't know what I'd do without your infinite wisdom.

Do you actually have something to say on topic? Maybe you know why the CPU died? Perhaps you were there and saw it happen?
Hold the bus here.....this is coming from reddit....so this never happened. Remember reddit is a terrible source of information.

So this person is an idiot and has no experience, so lets drop the topic now because reddit
Posted on Reply
#40
kazuviking
AthenaI'm confused, why would AMD do anything here,
Hey just have a hardware defect, nothing biggie.
Posted on Reply
#41
lexluthermiester
AusWolfNot to mention this is the first time we actually heard any word about the BIOS settings used, and changed before the CPU died. It's hard to find the culprit when half of the necessary information is unknown.
The commonality to all of these dead CPU's? The CPU's.
Tyler-98-W68Hold the bus here.....this is coming from reddit....so this never happened. Remember reddit is a terrible source of information.

So this person is an idiot and has no experience, so lets drop the topic now because reddit
Well said.
Posted on Reply
#42
AusWolf
Tyler-98-W68Hold the bus here.....this is coming from reddit....so this never happened. Remember reddit is a terrible source of information.

So this person is an idiot and has no experience, so lets drop the topic now because reddit
If Reddit is really the ultimate source of knowledge, then tell me why we're still discussing the possible reasons why that CPU died. Reddit surely knows, doesn't it?

Will you and that visible noise clown ever let off the personal attacks? Shall we discuss the topic instead? Please? :)
Posted on Reply
#43
Hecate91
lexluthermiesterThe commonality to all of these dead CPU's? The CPU's.
And ASrock boards which the person had used first. USB dropouts and the system being unstable should have been a clue to RMA the CPU first.
Posted on Reply
#44
AusWolf
lexluthermiesterThe commonality to all of these dead CPU's? The CPU's.
The commonality of all the people who ever died: the people. Therefore, people are faulty.
Posted on Reply
#45
Tyler-98-W68
AusWolfIf Reddit is really the ultimate source of knowledge, then tell me why we're still discussing the possible reasons why that CPU died. Reddit surely knows, doesn't it?

Will you and that visible noise clown ever let off the personal attacks? Shall we discuss the topic instead? Please? :)
WHy do you always cry "personal attack" when people challenge your viewpoints?

I couldn't imagine you ever in a debate, would say the other party was physically assaulting you because you don't like what they say?

Challenging someone's view points is not a personal attack, but it's amazing to see how people seem to think that's the case. Hey at least you didn't call me a clown

We are discussing the topic, melting CPU's now.......
Posted on Reply
#46
JustBenching
freeagentGood luck on quick and timely RMA from AMD. Pretty sure I have been waiting 3 weeks for an approval or even just a reply. I just checked before making this post and still nothing.
I thought Intel was the one refusing RMAs yadayada. :D
Posted on Reply
#47
Dr. Dro
lexluthermiesterThe commonality to all of these dead CPU's? The CPU's.

Well said.
I honestly think the high incident rate on AsRock is mostly due to their sheer customer volume, their budget motherboards are wildly popular. My understanding of these things is that motherboard makers do have some level of custom implementation, but ultimately the AGESA is what handles all of the power management functionality on the CPU anyways.
Posted on Reply
#48
AusWolf
Tyler-98-W68WHy do you always cry "personal attack" when people challenge your viewpoints?

I couldn't imagine you ever in a debate, would say the other party was physically assaulting you because you don't like what they say?

Challenging someone's view points is not a personal attack, but it's amazing to see how people seem to think that's the case. Hey at least you didn't call me a clown

We are discussing the topic, melting CPU's now.......
Because you are not challenging my viewpoints. You're trying to discredit me based on things I said in other threads about other unrelated topics. That's a huge difference.

Please don't derail this thread any further.
Posted on Reply
#50
Yumi
Greetings, I'm the owner of the kit (specialistcomcept on reddit)

Let me tell some informations

First I bought the taichi carrara in December 2024 brand new with a 9950x who started to do some random erros in steam downloads, unrealistic temperature from ccds in idle (from -127°c tô 127°c) so I did a RMA around July 2025 (the exact same day when Switch 2 enter in pre sale)

The entire life of the 9950x3d was in no pbo settings and no xmp/expo, my ram sticks isn't in the qvl so used manual to 6000cl30 with 1.08v soc (2000mhz) in bios 3.50 (was the last one at that time), after updating to newer bioses when the ASRock reddit got many reports I was afraid of any issues so I went back to 3.50 until I started to get some weird issues:

My Lian Li Fans started to fail the LCD connection in internal USB hub

I lost Bluetooth or wifi sometimes after boot

Losing Ethernet connection/cable detection after opening game (random situations)

My aio at time was a thermaltake th420 ultra v2 and the screen went crazy too

Argb started to get buggy

So I decided to fix the hero board, the issue with the hero board was a USB and bios corruption, we did a complete repair, I tested it with a 8500g with last 3902 bios for 2 months before doing the swap from X670 ASRock to x670 Asus

The CPU booted okay, all drivers installed (didn't format) so I thought if I could try one ram preset from Rog profile

Im not newbie or newcomer in this scenario, i owned x79 rive, x370 hero, x99 deluxe (I had wr in cinebench r20 with 5930k) and x99 rampage v and many others setups

Instantly after I pressed the F10, the board didn't booted and only 00 appeared, I had this behavior before in x99 deluxe when she killed my first 5930k by overvoltage (known issue from x99 Asus boards) but I never had this issue with AMD before

Another thing I have to say is: the taichi board isn't even booting anymore, it's completely dead even without eps cable or CPU or other PSU (I tested both boards with other CPU, PSU and ram sticks)

I'm not blaming any brand, I just asked AMD for a RMA since if my CPU was dying from the first board, the Asus finished him, sadly I'm not going or planning to have a Am5 anymore and I bought a core ultra 7 270k plus witch a z890 Aorus Elite X Ice

If you guys have any questions feel free to reply

I liked this setup and the performance from Am5 but for work isn't reliable for me anymore, I'm product analyst, network analyst for the gaming industry

Greetings from Brazil
Posted on Reply
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