The AMD Ryzen All In One Tread /Overclocking/Memory Speeds & Timings/Tweaking/Cooling

Discussion in 'Processors and motherboards AMD' started by chispy, Feb 22, 2017.

  1. chispy

    chispy Ancient Guru

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    Thank you for posting your findings and results.


    Nice find Clouseau , thank you for posting your newl finding , tweaking and the report.
     
  2. chispy

    chispy Ancient Guru

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    It took me many of hours playing with all the memory settings on my motherboard Asus CH VI Hero and the latest and official Bios 1403 based on Agesa 1.0.0.6.2 code today but finally it is 100% stable 24/7 at this memory clocks after many trial and errors. Tested 1 hour of memtest with zero errors , ran superPi 32m five times back to back , Aida x64 memory benchmark and stress testing pass. Played all my games for a few hours also and was completely stable 100%. I'm done tweaking my memory for now , i'm more than happy with the results

    DDR4-3472Mhz ( 1736 ) , gear down mode ( GDM ) off , bank group swap ( BGS ) off. 1.45v Dram voltage , 1.45v Dram boot voltage , SOC 1.15v , Timings 14-14-14-28 1T. Rest of the timings manually tweaked one by one below.

    [​IMG]
     
  3. mikev190

    mikev190 Master Guru

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    Where is the bank group setting in our bios? Can only find the gear down option
     
  4. chispy

    chispy Ancient Guru

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    It was there in the older Beta bios of Agesa microcode 1.0.0.6 , indeed there was the option to turn it off or on. But on the latest official Bios directly from Asus download , Bios 1403 it is based on an updated Agesa Microcode 1.0.0.6.2 wish does not have that option anymore as it is already turned off and there is no way to turn it on ( That i know off ).

    So if using latest Stable Official Bios 1403 for Asus CH VI Hero it wont be there , you will not find that option anymore. See the screenshot below Bank Group is Off by default on this Bios 1403. Hope this helps.

    Kind Regards: Chispy



    [​IMG]
     

  5. Clouseau

    Clouseau Ancient Guru

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    BGS settings are found in the CBS section. There is also a BGS Alt setting as well. Both may have a purpose but inflect a decent penalty. Like Chispy stated, they are off by default so leaving them on auto is all well and good.

    Advanced>AMD CBS>UMC Common Options>DRAM Memory Mapping

    EDIT: All of the options here if changed from Auto result in a penalty regarding the memory subsystem unless they are providing support for the reason they are there (not sure when they would be beneficial).

    All the settings am currently playing with are found here in the CBS section.
     
    Last edited: Jul 18, 2017
  6. chispy

    chispy Ancient Guru

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    Thank you for the findings and report Clouseau. Latest Bios Official 1403 for Asus CH VI hero it is the best Bios so far i believe. In my testing it is 100% stable rock solid and i was able to squeezed more performance out of my set up.
     
  7. mikev190

    mikev190 Master Guru

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    Thanks!

    I'm struggling to find the best safe voltage for 24/7 use. I can't get past 3.9Ghz without going above 1.35v. Would you say a little over would be ok? My temps don't seem to be an issue.
     
  8. DW75

    DW75 Master Guru

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    The G.skill F4-3466C16D-16GTZ that I ordered got lost in the mail. I am not impressed. I now had to get the Crucial Ballistix Elite DDR4 3466 RAM, another 16GB kit instead, model BLE2K8G4D34AEEAK. It is also guaranteed Samsung B-Die. It cost me more damn money as well. It was another 15 bucks. They had no more G.Skill in stock. I am pissed right off. Anyways, I will have everything in a couple days, finally.
     
    Last edited: Jul 18, 2017
  9. Webhiker

    Webhiker Master Guru

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    If it's CPU voltage you are asking for, then 1.425v is max for daily use. Above that and you risk the long term life of your CPU. Personally I'm using 1.4v (with LLC 1) for 4025 MHz. Could most likely go a bit lower, but haven't bothered since it's rock stable as is.
     
  10. AsiJu

    AsiJu Ancient Guru

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    Ouch that sucks! Too bad.

    And if postal service in Canada is anything like Finland they are extremely reluctant to accept responsibility for lost deliveries.

    As if them being responsible for the arrival of the stuff they deliver is somehow beyond human comprehension...
     

  11. mikev190

    mikev190 Master Guru

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    Ah that's great thanks! What temps do you get at 4025mhz?

    I was playing last night and can run 3950mhz at 1.344v which I thought was a good compromise.
     
  12. Clouseau

    Clouseau Ancient Guru

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    Concerning the cold boot bug, Raja made this comment:

    This speaks volumes even to why there was ram compatibility issues. Yes there will always be compatibility issues but working with a third party, does not matter who it is; adding a third party to the mix just makes refinements that much more difficult to achieve. Hats off to pulling off what has been accomplished so far.


    Almost finished tweaking the CBS section. Thought I had it all nailed down and then proceeded to tighten a few ram timings. The tighter timings nullified some of the settings in the CBS section that had been tweaked; started over. Turns out the tighter timings accomplished more than the previous CBS tweaks. Last set of settings moving back to Auto will be finished tonight. The ram timings that had the impact: TrdrdScl_SM and TwrwrScl_SM.
     
  13. OnnA

    OnnA Ancient Guru

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    AMD EPYC (and Threadripper) is a major advance over Intel Skylake SP (and Skylake-X)
    At these higher core counts, AMD's MCM approach with Infinity Fabric has allowed AMD's EPYC to BOTH outperform Skylake SP and be manufactured at a much lower cost.

    And here is EPYCs only “supposed” Achilles heal – Latency (an excuse used by Barclay's Blayne Curtis to lie about Epyc)

    From the Anandtech testing of Epyc 7601 ($4200) and Intel 8176 ($8700):
    http://www.anandtech.com/sh...
    blk size 8176 latency (ns) 7601 latency (ns) delta (ns)
    0.5KB 4 5 1
    1KB 9 10 1
    2KB 17 11 -6
    4KB 20 11 -9
    8KB 23 33 10
    16KB 26 62 36
    32KB 40 102 62
    64KB 75 107 32

    AMD claims 250GB/s Memory BW. From the Anandtech testing of Epyc 7601 ($4200) and Intel 8176 ($8700), 7601 w/ 2400MHz RAM showed 207GB/s, so 2666MHz RAM would achieve 230GB/s.The one good BW out of three test methods for 8176 was 165GB/s w/ 2666MHz RAM.

    If using all of EPYC 7601’s 230GB/s Memory BW (w/2666MHz RAM):
    64KB transfer takes 278ns + 107ns = 385ns
    32KB transfer takes 139ns + 102ns = 241ns
    16KB transfer takes 70ns + 62ns = 132ns
    8KB transfer takes 35ns + 33ns = 68ns
    4KB transfer takes 17.5ns + 11ns = 28.5ns

    If using all of 8176 165GB/s Memory BW (w/2666MHz RAM):
    64KB transfer takes 388ns + 75ns = 463ns
    32KB transfer takes 189ns + 40ns = 229ns
    16KB transfer takes 90ns + 26ns = 116ns
    8KB transfer takes 45ns + 23ns = 67ns
    4KB transfer takes 22.5ns + 20ns = 42.5ns

    64KB transfer Epyc 20% faster
    32KB transfer Epyc 5.2% slower
    16KB transfer Epyc 13.7% slower
    8KB transfer Epyc 1.4% slower
    4KB transfer Epyc 49% faster

    Latency Shmatency, no big deal.

    For large data and 64KB block sizes, Epyc wins
    For small data and 4KB and 2KB block sizes. Epyc wins
    For 1KB and 0.5KB (and 8KB) block sizes it is essentially a tie.
    WARNING:
    Iun-able-tel will try to manipulate benchmarks to use 16KB block sizes.
     
  14. AsiJu

    AsiJu Ancient Guru

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    What's the cold boot bug? Asking because randomly my system fails first attempt of cold boot.
     
  15. Clouseau

    Clouseau Ancient Guru

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    Never experienced it on the ASUS Prime X370-Pro. Some experience it every third time but for me it literally is every fifth cold boot it automatically enters safe mode. All the manual settings are still there.

    Hate it because the CBS section is wiped to defaults every time when safe mode is entered because of boot failure. AMD for some reason purposely created the CBS section that way. It's an actual feature. Guess it is beneficial in that some of those settings are duplicates from other sections in the bios. While experimenting, before making the setting "permanent," it can automatically disappear upon boot failure. Unfortunately some of the settings are unique to the section.
     

  16. Jagman

    Jagman Ancient Guru

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    I'd loosen your RAM timings and/or increase RAM voltage. If a PC wont POST, then marginal RAM timings/voltage could well be the issue.
     
  17. Ryu5uzaku

    Ryu5uzaku Ancient Guru

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  18. Clouseau

    Clouseau Ancient Guru

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    C6H New Beta BIOS

    Fun times this weekend:

    UEFI build 9920 for the C6H:

    * Improved DRAM cold boot, results in slightly longer POST time
    * Fix for CPU Ratio stuck at 22x on some CPUs when using Vcore override/offset
    * SenseMi Skew is now Disabled by default. If you want to return to previous behavior set SenseMi Skew = Enabled and Offset = 272.
    * Added DRAM profiles for Samsung B-based DIMMs with tuned subtimings, including The Stilt's settings

    https://rog.asus.com/forum/showthread.php?91766-Crosshair-VI-Hero-UEFI-build-9920-amp-1403
     
  19. AsiJu

    AsiJu Ancient Guru

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    AGESA 1006a based BIOS out for ASRock X370 Killer SLI. Likely other boards as well, would have checked but the ASRock website was very slow atm.
     
  20. Bentez

    Bentez Maha Guru

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    I was just about to post this. I'll be trying this bios out soon, the RAM profiles sound interesting.
     

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