What memory speeds can you expect from Ryzen?

Discussion in 'AMD x86 CPUs and chipsets' started by Sgt Bilko, Jan 17, 2019.

  1. Hotrod2go

    Hotrod2go Member

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    Cheers, I thought these results would be relevant to the title of this thread.

    Be nice to get stable windows testing with 3600 boot on these Patriot steel sticks I have.
    After success with couple runs in Memtest86+ v8.2, thought I'd push it & boot into Windows, happily it did but upon Memtest64 testing, after couple loops, got BSOD.
    I'm guessing upping the SOC might help?
     
    Last edited: Aug 9, 2019
  2. OP
    OP
    Sgt Bilko

    Sgt Bilko Member

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    By all means, I can't cover every Memory/CPU/Motherboard configuration out there so if you or others want to throw results up here then I am all for it :D
     
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  3. bob05

    bob05 Member

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    This video is very interesting, worth a watching.
     
  4. Hotrod2go

    Hotrod2go Member

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    I understand this is with 3000 series but the B450 platform interests me, what vdimm did you use for those ram settings?
     
  5. itchynads

    itchynads Member

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    I tried up to 1.45v
     
  6. Hotrod2go

    Hotrod2go Member

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    Ouch! don't think I'd want that for daily gaming sessions..lol.
     
  7. Ratzz

    Ratzz Member

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    Meh. 1.45v is nothing. This is memory, not CPU. You could run 1.45 24/7 for years, no problem.
     
  8. OP
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    Sgt Bilko

    Sgt Bilko Member

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    Depends on the IC used, not all can take that level of voltage and be fine.
     
  9. darkbastard

    darkbastard Member

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    On my formula board there is 4*8 BDie 3600 memory preset option that is touted as a daily option at 1.45 and a low latency 3733 4*8 Bdie option at 1.5

    So for Samsung Bdie at least I would guess 1.45 is ok ????
     
  10. RnR

    RnR Member

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    From what I understand 1.5v for b dies should be ok for daily use.
     
  11. OP
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    Sgt Bilko

    Sgt Bilko Member

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    Samsung B Die can generally take voltage well, some ICs can't which is why I have a 1.4v blanket cap in the OP.
     
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  12. SKITZ0_000

    SKITZ0_000 Member

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    I just got my hands on some Crucial Ballistix Sport LT 32GB (2x 16GB) DDR4 3200MHz (Micron e-die), had a bit of a play before work.


    Click to view full size!


    This is far from stable, but got into windows and ran AIDA64 @ 3666C14, which is impressive for dual rank memory on Zen+. I did however have to enable geardown mode which has added a fair bit of latency. I think I might be able to get away with 3600-C16 daily, but well see - that speed is definitly on the edge of what my 2700Xs' SoC can handle.

    Just for comparison, below is my daily clockspeed and AIDA64 performance on 2x16GB sticks of Hynix AFR (Trident Z 3200 C16).


    Click to view full size!


    I purchased the Ballistix kit for my incoming 3900X, as I don't think my Hynix AFR has many hertz left in it.
     
  13. RnR

    RnR Member

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    Just came across this...

     
  14. M1ck1

    M1ck1 Member

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    HI what voltage
    I just received a Ballistic elite 3600C16 16 18 18 18 38 kit and it wouldn't boot @ 1.35 tried Ryzen Calc but timings loose so tried 1.38 at stock runs fine but haven't had time to give it much attention 2600X 470X strix thanks in advance.
    ryzen calc recommending 1.38-1.4v for 3600 C16.20.20.20.40
     
  15. SKITZ0_000

    SKITZ0_000 Member

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    What IC's do you have? Is it e-die? I haven't had much luck with stability at 3600 on my 2700X, I find ~ 3400 and tighter timings to be the sweet spot.

    I generally run a 1.0875v SoC, 900VDDP which tends to give me the best results, with 1.45v on the memory to start with. Then I dial the memory voltage back if it's stable (after optimising timings). Setting everything from Ryzen calc including CAD BUS block and timings, Termination Block and memory interleaving tweaks helps as well.
     
  16. M1ck1

    M1ck1 Member

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    Yeah they are E die SR thought they may have been binned a bit better than the sport, because of price $238 delivered Amazon your probably right about 3400 as 3600 is max recommended for 2000 series. I replaced Dominator platinum 3000C15 they were Micron B die DR, I ran them at 14 16 16 34 1.38v which was Ryzen Calc recommended for 2933, so I will keep playing with the Ballistics, does interleaving help single rank.I appreciate your help I'll try your volts for Soc and VDDP
     
    Last edited: Aug 15, 2019
  17. SKITZ0_000

    SKITZ0_000 Member

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    A bit of an update from me;


    Click to view full size!


    So 3666-C16 @ 1.45v is where I'm at stable at the moment. I'm still pulling voltage out of it, but I'm starting with SoC, then I'll work the memory down.

    A couple things; one important factor, lower bin Micron e-die needs a higher tRRCD. I battled with this ram for hours, feeding it well over 1.5v still with errors, changing this one value to 20 completely fixed my stability issues.

    I've really struggled with FCLK on this 3900X, even decoupling the memory I cant get FCLK stable at 1866 (for 3733 RAM) or above. Motherboard could be a factor, as I'm using an el-cheepo Asrock X570M Pro4 (as my case is mATX, and it's the only option).

    A question I have, what could cause my memory latency to be so high? I'm running 1:1 MEMCLK/FCLK/UCLK, surely I should be able to get it below 70ns at those speeds?
     
  18. Hotrod2go

    Hotrod2go Member

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    I wouldn't get distressed about that, imo immature bios would be one factor. Heck, the board in my sig just got another bios update, its now the 8th one since launch. Last 3 have been in support of 3000 series & other bits n' pieces they claim to fix.
     
  19. Ratzz

    Ratzz Member

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    You may find that it improves with time. I have Ballistix Sport LT c16-3200. I'm running 4 dimms (4x8) on T-topology (X470 Taichi) with a 2700X. Using the ryzen calculator, initially I couldn't improve on the 3200 XMP rating of those sticks.

    After awhile I was able to bump it up to c16-3400 with no additional changes, stable. A few days later and I am running c16-3600 on those same sticks, stable for an hour of memtest with 0 errors, with no additional changes apart from bumping the frequency.

    I'm running with ram locked at 1.38v in the BIOS, which HWINFO is reporting as 1.4v. I'll be attempting to bump the frequency a little more tomorrow, or tightening the timings, or lowering the volts, whichever method seems to work. All 3 would be nice :D

    Being X470, I have no FCLK option to play with that I can see.

    It seems it takes a few days (24/7 use) to properly train.

    Below image is from a couple of days ago. I got bored waiting for memtest so this run was only 25 mins.
    CPU was running on PBO, hence the various fluctuations. Peak single core was 4350, peak voltage 1.437, but averages were about 4000 @ 1.35v.

    These sticks are for sale, I had much better results from my Samsung B-die (Hyperx c19-4000 XMP), which runs c14-3600 at 1.36v happily 24/7. Obviously paying a price premium for Samsung B-die though.

    [​IMG]
     
    Last edited: Aug 20, 2019
  20. Ratzz

    Ratzz Member

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    I upped the frequency to 3666 earlier, still retaining all of the c-16 settings from the above image. I got 20 minutes into memtest, and was pretty happy that I'd actually improved on the above yet again. Sadly, I BSOD'd (memory management) at 20 minutes. I will attempt to bump the voltage another .2v and see if that gets me there.
    I'll probably install the HyperX c19-4000 again after that, and see how far I can push them. I know they are rock solid at c14-3600 with only 1.36v, I'm pretty confident I'll get them to at least c14-3733 with little fuss, especially since I only have 2 dimms of them to push, and they are both a much higher bin and Samsung B-dies.
     

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