I have recently upgraded my PC, the rest of the network and components stay the same. Everything works fine but the CPU collapses from time to time (aproximately every one or two hours on average) and the sound gets clipped or stops so I have to restart the PC. I have used an image of my old setup that worked fine for yeras and then installed everything from scratch and still I have the issue. I attach screenshot of CPU usage when problem occurs, please let me know what elese is needed as I am new to this community.
Thanks in advanced for your help
It looks like a 1 core 100% load is alternating between two cores (0 and 16?). Have you checked the thermals on your upgraded PC? Maybe the heatsink is improperly fitted or even inadequate for the processor, and, when cores are running near flat out (as two cores here seem to be when active), then they get hot and thermal throttling kicks in.
Other than that, I noticed that the network activity is zero (or at least very low) during the period. Were you streaming from a disk or from the network when this happenned? If the latter, then maybe there is a network issue of some sort.
Thanks for the answer
I am using the fan that comes with the processor, the temperature is normally 57 centigrate with a maximum of 81, will look next time it happens. I play both from Tidal or the files inside the PC, not sure what was playing at that time.
These temperatures look like the package temperature rather than the core temperatures. If that is the case, then 81 centrigrade would appear to be high to me. However, I have no recent experience of AMD processors (the last AMD processor I used was the original Athlon!) so I don’t really know.
With my desktop 10-core I9 10900K with all 10 cores running at 100% (a much higher load than you are presenting) my core temperatures only just reach 75-80 centigrade with the package temperature being quite a bit lower.
Again, I can’t speak to AMD retail processors, but I can say that the supplied heatsink with the mid to high end Intel retail desktop/workstation processors tend to be inadequate and processors so equipped are unlikely to be able to sustain high loads.
Thanks,
I am shortly changing my PC to passive cooling (I am only using the fan that came with the processor to configure it), I am installing a streacom FC9 with max recomended TDP 65W which is the one of the ryzen 9 7900. Will post comments when I do it.
The issue is that the CPUusage is always below 10% on average and it worked before with a processor running at 40% or above.
On your previos comment on the network, the network stops (VNC connection a Roon remote get disconected) when the problem starts, reseting router and switches did not help
On Nickpi comments, yes I run HQPlayer on the same machine, memory is 16G with only 30% of it in use, the memory I use was in the compatibility list of the motherboard. I will look at the power supply and the benchmark test when I change the cooling. Thanks
I have investigated further and here are my findings:
When the PC collapses the network stops working
psensor app shows 255 degrees (obviosly wrong but goes up from 55 and is the only temperature that rises so much) for imsensor i350bb which I think is the network chip
Highest CPU is 83 degrees and for a short time
In fact the network conection is not from the motherboard but from a dedicated PCIE card from JCAT
Any ideas on what could be happening? It seems that is not a CPU issue but rather related to the network
Sorry. Not.knowing modern AMD systems, I don’t think I can really help any further.
I will say that a value of 255 always strikes a warning note to me because it is the largest value that can be represented in an 8 bit value (or hardware register).
JCat card could be the issue. Try removing it and using the onboard ethernet and see if that rights things. If so, then re-install the JCAT card including the drivers.
You are right, thanks! JCAT is the culprit. I have removed it and now the CPU does not colapse. On the re-install part I am lost as I am using Ubuntu and assume that it takes the driver automatically. Anyone can help with installing JCAT to work with AMD?
What is wrong with the built in ethernet port on this computer?
Ethernet trancievers do not need the ‘femtosecond clocks’ and ‘ultra stable power supplies’ that JCAT claim to use.
Ethernet uses differential signalling and absolute voltages do not matter. Furthermore, common mode noise is automatically rejected. Differential noise has to be ‘huge’ to affect the performance of the receiver. In addition, ethernet transceivers galvanically isolate the line signals from the rest of the device.
As far as clocking is concerned, like everything else in the digital world, the clock used for ethernet transmission only needs to be ‘good enough’. Nothing is gained by making it 'better than good enough.
Being a hobbyist I have tried many things I though would not make sense (like the OS of the PC making a difference, that for me it does) some have surprised me and others, the JCAT card is in this area, have impressed me less.
However, given that I have it, any suggestion on if there is a solution to make it work in my AMD based PC will be more than wellcome.
SOLVED, I have contacted JCAT and they suggested to use another PSU and it works now (although the card had worked with the same PSU for years in the old Intel based PC).
Thanks to everyone contributing to the solution!
