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AMD Ryzen 7 7800X3D CPU Burns Up

SkeeterUK said:
Least this issue was found now rather than later when more ppl bought them and didnt know about it then bam.

Tho im wondering if the whole soc locked to 1.3 max is a quick fix for a more complex problem.
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The way I see it is they (AMD) have identified one thing that is the most probable cause of the failures (VSoC) and capping that to a limit of 1.3v, but as a precaution they are also putting in hard caps on other rails (probably VDDIO, VDD_Misc and to make sure VDDCR_VDD (Vcore) doesn't exceed safe levels for X3D chips)
 
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SkeeterUK said:
Least this issue was found now rather than later when more ppl bought them and didnt know about it then bam.

Tho im wondering if the whole soc locked to 1.3 max is a quick fix for a more complex problem.
Click to expand...

It’s likely a combination of things. I’ve seen a lot of burn marks on LGA based chips and that seems at least partly down to the different socket mechanisms and finger prints.
 
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SkeeterUK said:
Least this issue was found now rather than later when more ppl bought them and didnt know about it then bam.

Tho im wondering if the whole soc locked to 1.3 max is a quick fix for a more complex problem.
Click to expand...

I think it is a simple fix for a complex issue but it's the same fix for the same complex issue everyone has been doing forever.

The maximum voltage has to be low enough that the worst quality silicon that comes out of the factory still runs fine.

My take is that they set the safe voltage too high for the worst silicon but because this is like a reverse golden chip it's hard for tiny samples to repeat the failure.
 
Hotwired said:
I think it is a simple fix for a complex issue but it's the same fix for the same complex issue everyone has been doing forever.

The maximum voltage has to be low enough that the worst quality silicon that comes out of the factory still runs fine.

My take is that they set the safe voltage too high for the worst silicon but because this is like a reverse golden chip it's hard for tiny samples to repeat the failure.
Click to expand...

Who knows, but Core V seems unchanged. What/if any issues need addressing remains to be seen.
 
Cyber-Mav said:
Some new posts on reddit from people running stock are having the same issue now so dunno if its issue with stock vcore or something else. I guess we will get more info on this next week or 2
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Honestly wouldn’t take anything said on redit as true.

What is bizarre is how 60-70amps~ are supposedly turning the ISH molten and deforming it, especially with such efficient cooling clamped under force. It’s also odd the substrate isn’t letting go first, that would seem a much less resistive path for current to flow and the weakest part of the chip.

The motherboard must be allowing something truly terrible go on.
 
keyser van someone said:
What this shows is how close to the edge we are with power limits on silicon. I prefer to back it off 10%, get a non-X and 65/88W. Any reports of a non-X CPU having this problem?
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Just changed some fittings on my CPU water block, so as it had to come off, I thought id check my chip over, all is good here and I was running SOC at 1.35v (default with expo enabled) for a few weeks, I was suspicious about that high a voltage as my previous Ryzen max soc was 1.2v, so I did ask the question on another forum, the only response I got was, its safe on Ryzen 7000 upto 1.4v which of course turned out to not be true, I then disabled expo and set buildzoids timings manually, at the same time I reduced the SOC voltage to 1.25v, then this issue arose and I further reduced it to 1.15v, anyway, checking the chip and socket tonight, all is good..........its a Ryzen 7900 non X (65watt part) on an ASUS X670E Gene mobo, I was worried that maybe it would be showing signs of bulging though, wish those parts had of arrived sooner so I could have taken the block off sooner, RM are rubbish though, 4 days for 1st class from OCuk.

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Hotwired said:
I have a feeling that if you can see anything it's already too late and dead.
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This... what temperature do you have to reach to deform a PCB? :eek:

(My guess is the solder melts first, iirc that's around 160C. Honestly I'm surprised the SoC can actually generate that much heat given it's typical wattage...)
 
I have just pu the new MSI Bios on:

  • Description:
    - By following the mitigation from AMD, fix CPU SoC voltage upper limit for Ryzen 7000X3D and non-X3D series CPU, which might affect the performance of certain EXPO memory modules. - Support 48/24GB high density DDR5 memory module.

Memory at 6000MHZ
VDDCR_SOC Volage is now 1.305v (was 1.355v) with EXPO enabled.
 
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Scooby-DoobyDoo said:
I have just pu the new MSI Bios on:

  • Description:
    - By following the mitigation from AMD, fix CPU SoC voltage upper limit for Ryzen 7000X3D and non-X3D series CPU, which might affect the performance of certain EXPO memory modules. - Support 48/24GB high density DDR5 memory module.

Memory at 6000MHZ
VDDCR_SOC Volage is now 1.305v (was 1.355v) with EXPO enabled.
Click to expand...

Is this the one from the 14th?
 
I checked my 7950x, it's been running at fixed 1.25v SOC since I got the chip, it's never been on auto. I've got the two dram voltages set to 1.35v as the ram is unstable at 1.3v, it's using 6000mhz cl30 with buildzoid's timings. The "cpu core voltage" is set to auto and PBO is off
 
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henry hoov3r said:
Ok. Hopefully they will release the B650 bios soon.
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Mine is the MSI B650M Mortar

www.msi.com

MAG B650M MORTAR WIFI

Powered by AMD Ryzen 7000 series processors, the MSI MAG B650M MORTAR WIFI is hardened with performance essential specifications to outlast enemies. Tuned for better performance by Core boost, memory Boost, Premium Thermal Solution, M.2 Shield Frozr.
www.msi.com www.msi.com

Tomahawk is avalable aswell:

www.msi.com

MAG B650 TOMAHAWK WIFI

Powered by AMD Ryzen 7000 series processors, the MSI MAG B650 TOMAHAWK WIFI is hardened with performance essential specifications to outlast enemies. Tuned for better performance by Core boost, memory Boost, Premium Thermal Solution, M.2 Shield Frozr.
www.msi.com www.msi.com
 
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Scooby-DoobyDoo said:
Mine is the MSI B650M Mortar

www.msi.com

MAG B650M MORTAR WIFI

Powered by AMD Ryzen 7000 series processors, the MSI MAG B650M MORTAR WIFI is hardened with performance essential specifications to outlast enemies. Tuned for better performance by Core boost, memory Boost, Premium Thermal Solution, M.2 Shield Frozr.
www.msi.com www.msi.com
Click to expand...

Yeah I edited my post. Thanks for the heads up.
 
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