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AMD Ryzen 9 3900X Linux CPU Frequency Scaling Governor Benchmarks

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  • zerothruster
    replied
    Originally posted by shmerl View Post

    Thanks. That's the one that comes with SystemRescueCD? Is there some version of it that works with UEFI, or they are all legacy BIOS?

    I.e. the one I know is memtest86+: https://www.memtest.org
    From memory, that fork stopped being developed and the last version locked up on many motherboards if running all cores in parallel. The original version is again being updated and still has free downloads, at least for individual use, from https://www.memtest86.com

    Leave a comment:


  • shmerl
    replied
    According to one report here: https://github.com/groeck/k10temp/is...ment-528016506
    reboots could be due to bug in the firwmare:

    The recent AGESA 1.0.0.3 ABB dropped the fan temp trip to 75° C. At that point all fans go to 100% speed.

    I have custom cooling loop on my 3900X. But if the fans don't run there is no heat exchange taking place and the cpu overtemps. There is a bug in the BIOS that disables the fan headers sporadically. That is what caused by overtemp conditions. I have since removed all fans from the motherboard headers and plugged them into a standalone fan controller. Problem solved. Still waiting on the Beta 0002 BIOS with the fixed fan header issue to make it to an official BIOS.

    I have the ASUS Crosshair VII Hero motherboard. BIOS 2703 AGESA 1.0.0.3 Patch ABB.

    Leave a comment:


  • numacross
    replied
    Originally posted by shmerl View Post
    Is stressapptest enough for that? I run it a few times, and it was fine.
    I have no experience with that particular software, but from their readme: "It is moderately good at catching bad memory cells and cache coherency issues". I consider a nightly run of prime95 large FFTs enough for "proving" RAM stability.

    Leave a comment:


  • shmerl
    replied
    Originally posted by numacross View Post

    Well you are overclocking your RAM since the maximum official speed for Ryzen 3000 is 3200MHz. I'd try going 3200CL14 if your sticks can manage and testing both configurations with prime95 Large FFTs.

    I stopped trusting memtest because when I was tuning my RAM it ran fine for a few hours while prime95 detected errors after just 2 minutes of running
    Is stressapptest enough for that? I run it a few times, and it was fine.

    Leave a comment:


  • birdie
    replied
    Something is terribly wrong with Ryzen 3000 CPUs under Linux or CPU governors.

    There must not be a big difference between tasks which run for a long time (e.g. video encoding), yet Michael has shown that Ondemand and Performance governors differ by up to 10% which is simply insane.

    Leave a comment:


  • numacross
    replied
    Originally posted by shmerl View Post
    I'm not overclocking it. Only using XMP profile for RAM (3600MHz / CL16).
    Well you are overclocking your RAM since the maximum official speed for Ryzen 3000 is 3200MHz. I'd try going 3200CL14 if your sticks can manage and testing both configurations with prime95 Large FFTs.

    I stopped trusting memtest because when I was tuning my RAM it ran fine for a few hours while prime95 detected errors after just 2 minutes of running

    Leave a comment:


  • laffer1
    replied
    Originally posted by shmerl View Post
    Did anyone encounter reboots during heavy load? My Ryzen 9 3900X / Asrock X570 Taichi (firmware 2.0) starts rebooting when CPU temperature reaches somewhere between 70°C and 80°C. For example when building Linux kernel.
    Some of the early firmware was setting the voltage higher than it needed to be on the asrock boards. That could be the issue. See if there is a bios update.

    Aside from that, make sure the cooler is mounted well and coming in good contact with the chip. Also check air flow with your case.

    Leave a comment:


  • davidbepo
    replied
    Originally posted by Michael View Post

    "The power consumption between the modes weren't compared due to the WattsUp Pro meters being busy on other systems and this testing was done prior to the recent Windows/Linux power discoveries; in fact, this testing was from back in July albeit slipped under the radar for publishing these figures...The next round of Ryzen CPUFreq benchmarks will also be looking at the performance-per-Watt metrics, but generally from our past findings have shown those to be close as well."

    I only have 2~3 working WattsUp Pro meters. Unfortunately the company went out of business like 2 or 3 years back. I've tried buying several used ones off eBay and the like, but they all are borked. There is a known problem where after lots of extended use, they begin reporting like ~0 Watt usage.
    ah, okay but i hope the next round is soon

    Leave a comment:


  • shmerl
    replied
    Originally posted by AndyChow View Post

    I'd run a memtest86 for a few passes to see if you have some bad RAM. The only time I've encountered reboots during heavy loads was a bad stick of RAM.
    Thanks. That's the one that comes with SystemRescueCD? Is there some version of it that works with UEFI, or they are all legacy BIOS?

    I.e. the one I know is memtest86+: https://www.memtest.org

    Leave a comment:


  • AndyChow
    replied
    Originally posted by shmerl View Post
    Did anyone encounter reboots during heavy load? My Ryzen 9 3900X / Asrock X570 Taichi (firmware 2.0) starts rebooting when CPU temperature reaches somewhere between 70°C and 80°C. For example when building Linux kernel.
    I'd run a memtest86 for a few passes to see if you have some bad RAM. The only time I've encountered reboots during heavy loads was a bad stick of RAM.

    Leave a comment:

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