- Sep 13, 2008
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This does sound likely to be a CPU issue then. That said, I have seen a few times faulty memory that passed the UEFI memtest86 4 passes...At this point I would attempt to RMA or return the CPU.
I've tested with Cinebench R20, Blender Benchmark, Windows 10 Memory Diagnostic, memtest86 v.8.2 (Passmark UEFI version), 3DMark (demo version from Steam), Unigine Heaven and Valley benchmarks. All OK (meaning no errors, nor crashes).
But in Prime95 (Version 29.8 build 6) I get rounding errors almost right away. Usually for Worker 4 and 3.
If I disable AVX2 and AVX, I do not get this error. But I only let it run for about 10 minutes at a time, because the CPU temperature gets to about 90 degrees in this case.
Disabling the memory XMP profile does not help with Prime95.
I tried then the second available BIOS 7C02v31 (v.3.1, with 1.0.0.3AB). No change in Prime95.
The Prime95 rounding error does not seem to be caused by my RAM, but I don't have any other DDR4 to test with (I only have some DDR3 modules).
Could it be because the stock cooler is not adequate for this Prime95 task?
Or I have a bad CPU?
Hard to say for sure, but you could run memtest86 to help eliminate RAM errors. If you have 4 passes no errors, it is likely the CPU.
The error appears almost right away (under a minute). Almost always worker 3 or 4 fails first.
In Cinebench R20 (during the multithread test) the CPU temperature gets to about 82 Celsius.
I returned my Ryzen 5 3600 CPU.
Not sure if I should also return the MSI B450 Tomahawk MAX motherboard or not. I have a few more days in which I can return it.
It has two 140mm fans at the front, as air intake and one 140mm fan at the back, as exhaust.
That being said, your CPU temps were easily 5-10C hotter than many of the R5 3600 reviews I've read using the stock cooler. What's the net airflow through your case? Also, if you get another 3600, I do recommend a better HSF. At least the Gammaxx 400.
I tried to point out the nearly obscene temps of these CPUs, running PrimeGrid (or Prime95 with AVX/AVX2) workloads, they really push these CPUs to the edge and beyond, thermally, with "normal" heatsinks.With the other benchmarks I used (such as CineBench R20 or Blender Benchmark) the CPU temperature did get high, but not as high as with Prime95.
I am suspecting the same thing. I mean it's to be expected that they would put the worst bins on Ryzen 5 3600, but these might be not just marginally worse, but only borderline functional.These 3600 CPUs get the "worst" bins, pretty-much, as far as leakage and temps and whatnot.
Can you list them?I went through three different air heatsinks
Since I don't intend to overclock the CPU, my plan was to stick with the stock cooler, at least for a while.
I might get an aftermarket cooler if there is a good price during Black Friday (which is not that far away).
I am looking at "tower" air coolers with one 120mm fan and which do not extend above the memory slots. And without LEDs, if possible.
Such as (sorted by local price, from low to high):
The last one is only an option if it gets a big discount.
- Deepcool GAMMAXX 400 (right now this is quite cheaper than the others from this list)
- ARCTIC AC Freezer 34 eSports (1.48 times the price of GAMMAXX 400)
- Cooler Master Master Hyper 212 Black Edition (1.91 times the price of GAMMAXX 400)
- be quiet! Dark Rock Slim (2.17 times the price of GAMMAXX 400)
- Noctua NH-U12S (2.87 times the price of GAMMAXX 400)
Can you try the latest Prime95 Small FFTs (without disabling AVX/AVX2) and with 12 workers on that PC and report the results (if you get errors or not and what temperatures you have - temperatures as reported by Ryzen Master)?The 3600 runs super fine with stock cooler in not so well ventilated case in one of my kids gamer machines. Some cheap asus b350 board. This cpu is ultra lean.
X570 boards are out of the question. I won't pay more for the motherboard than for the CPU.I would get a Gigabyte X570 board if you are thinking of getting a new board.
Interesting. No review of Artic Freezer 34 eSports I saw or read mentioned the small size of the base.The Gammaxx 400 is your best option; I have run it on the 3900X and 3600 no issues, it covers the whole cpu, unlike the Freezer 34 and does a better job than the Hyper 212.