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GMP damaging Zen 5 CPUs?

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Re: GMP damaging Zen 5 CPUs?

#61

Post by tpurves »

fxtentacle wrote: post #8
topspin wrote: post #4

As there is ongoing drama with Zen 5 and power issues, there are people with the instruments and the motivation to investigate this. You should consider contacting Gamers Nexus, and help them to get your test suite running. They can measure power draw and do a thermal analysis of this CPU, and they'd likely be eager to do it, given the possibility of making a bunch of dramatic YouTube content about design flaws in wi…

He's a bit sensationalist, yes, but I am thankful that he saved us from buying affected Intel CPUs.

Yes. When he's right, he's right. However the main issue I have with GN is how Steve tends to go full Leeroy Jenkins pitchforks and torches for 9 out of every 5 actual scandals in the tech industry.

Re: GMP damaging Zen 5 CPUs?

#62

Post by wmf »

FuriouslyAdrift wrote: post #23

Most likely it's the motherboard. ASRock is getting nailed right now for unstable XMP and CPU voltages (it's recommended to undervolt a little just in case). The Asus Prime B650M motherboards they are using aren't exactly high end.

Yikes, this is the cheapest motherboard and failed Hardware Unboxed VRM tests. https://youtu.be/DTFUa60ozKY?t=744

Re: GMP damaging Zen 5 CPUs?

#63

Post by gpapilion »

Gradual damage is consistent with over heating. I've seen racks of servers do the same thing.

Overall, there is a continued challenge with CPU temperatures that requires much tighter tolerances both in the thermal solution. The torque specs need to be followed and verified that they were met correctly in manufacturing.

Re: GMP damaging Zen 5 CPUs?

#64

Post by TiredOfLife »

MrGilbert wrote: post #43
topspin wrote: post #4

As there is ongoing drama with Zen 5 and power issues, there are people with the instruments and the motivation to investigate this. You should consider contacting Gamers Nexus, and help them to get your test suite running. They can measure power draw and do a thermal analysis of this CPU, and they'd likely be eager to do it, given the possibility of making a bunch of dramatic YouTube content about design flaws in wi…

> [...] a bunch of dramatic YouTube content [...] That framing doesn't do him and the team justice. There is (or better, was) a 3.5h long story about NVIDIA GPUs finding their ways illegaly from the US to China, which got taken down by a malicious DMCA claim from Bloomberg. It is quite interesting to watch (Can be found archive.org). GN is one of the last pro-consumer outlets, that keep on digging and shaking the tre…

[flagged]

Re: GMP damaging Zen 5 CPUs?

#65

Post by bob1029 »

bee_rider wrote: post #13
bob1029 wrote: post #9

Could be the power supply and load profile? I've heard some really wild noises coming out of my zen4 machine when I've had all cores loaded up with what is best described as "choppy" workloads where we are repeatedly doing something like a parallel.foreach into a single threaded hot path of equal or less duration as fast as possible. I've never had the machine survive this kind of workload for more than 48 hours with…

Is that, like, an intentional stress-test for the hardware that you’ve come up with?

No. It is just how the algorithms play out:

1. Evaluate population of candidates in parallel

2. Perform ranking, mutation, crossover, and objective selection in serial

3. Go to 1.

I can very accurately control the frequency of the audible PWM noise by adjusting the population size.

Re: GMP damaging Zen 5 CPUs?

#66

Post by pharrington »

jsheard wrote: post #52
pharrington wrote: post #45

Earlier quoted context omitted.

I'd assume both GMP and any CPU intensive game just prefer the performance cores.

AMDs desktop chips don't have distinct P and E cores, they're all P cores. AMD do have an E core design but it's currently only used in mobile and server parts.

Gotcha. Apparently Intel's marketing's gotten to me. I haven't really been keeping up with this stuff, so whenever I read about P & E cores in the past, I think I just assumed that was a thing both Intel & AMD were doing, without considering the source material too closely.

Re: GMP damaging Zen 5 CPUs?

#67

Post by nsteel »

raverbashing wrote: post #37
craftkiller wrote: post #3

Looking at the AM5 pinout[0], it looks like those pins are VDDCR and VSS. There might be a little bit of PCIe sprinkled in towards the outer edges, but I'm not 100% on the orientation of this pinout vs the orientation of the CPU. I don't know anything about electricity so I've got nothing else to add. [0] https://upload.wikimedia.org/wikipedia/commons/2/2d/Socket_A...

This is a nice guess but the likelihood that actual silicon area is closely connected to the pins in that area is not so obvious

Isn't almost every other pin going to be power/ground on a high-power chip like this? On both the package and the die.

Re: GMP damaging Zen 5 CPUs?

#68

Post by bayindirh »

TiredOfLife wrote: post #64
MrGilbert wrote: post #43

Earlier quoted context omitted.

> [...] a bunch of dramatic YouTube content [...] That framing doesn't do him and the team justice. There is (or better, was) a 3.5h long story about NVIDIA GPUs finding their ways illegaly from the US to China, which got taken down by a malicious DMCA claim from Bloomberg. It is quite interesting to watch (Can be found archive.org). GN is one of the last pro-consumer outlets, that keep on digging and shaking the tre…

[flagged]

Have you seen and watched their longer form content, esp. lately?

Re: GMP damaging Zen 5 CPUs?

#69

Post by bayindirh »

fxtentacle wrote: post #8
topspin wrote: post #4

As there is ongoing drama with Zen 5 and power issues, there are people with the instruments and the motivation to investigate this. You should consider contacting Gamers Nexus, and help them to get your test suite running. They can measure power draw and do a thermal analysis of this CPU, and they'd likely be eager to do it, given the possibility of making a bunch of dramatic YouTube content about design flaws in wi…

He's a bit sensationalist, yes, but I am thankful that he saved us from buying affected Intel CPUs.

He's a "student" and friend of late Gordon Mah Ung. He's carrying his torch forward.

This was Gordon's style, and Steve is continuing it. He has the courage to hit Bloomberg offices with a cameraman, so I don't think his words ring hollow.

We need that kind of in your face, no punches held back type of reporting when compared to "measured professionals".

Re: GMP damaging Zen 5 CPUs?

#70

Post by aidenn0 »

db48x wrote: post #19

> The so-called TDP of the Ryzen 9950X is 170W. The used heat sinks are specified to dissipate 165W, so that seems tight. TDP numbers are completely made up. They don’t correspond to watts of heat, or of anything at all! They’re just a marketing number. You can't use them to choose the right cooling system at all. https://gamersnexus.net/guides/3525-amd-ryzen-tdp-explained-...

I have a 65W TDP CPU, and the difference in power draw (measured at the outlet) from idle to full CPU load is over 100W; it seems to just raise the clock until it hist 95C, so if I limit the CPU fan's top speed, the power draw goes down.
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