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AMD Memory Tweak - Read/Modify Timings on the fly!

Discussion in 'Videocards - AMD Radeon' started by Eliovp, May 1, 2019.

  1. sideeffect

    sideeffect Master Guru

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    GPU:
    Vega 56
    New AMD drivers are out which have made all my old benchmarks redundant :oops:

    Tweaked my timings some more and gained a little more speed. No artifacts but not properly stress tested yet.

    Reducing tMRD and tMOD back to my BIOS defaults of 4 and 12 was a nice little boost.

    [​IMG]
     
    Last edited: May 14, 2019
    Kazablanka likes this.
  2. Kazablanka

    Kazablanka Member

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    GPU:
    Rx vega 64
    Is there any performance gain with new drivers?
     
  3. sideeffect

    sideeffect Master Guru

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    GPU:
    Vega 56
    Not really. There are lots of fixes and it has official 1903 support and WDDM 2.6. My benchmark results are all around where they were before.
     
    Kazablanka likes this.
  4. OnnA

    OnnA Ancient Guru

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    GPU:
    Vega 64 XTX LiQuiD
    You need WInX ver.1903 :p
    Then You'll see, so much better ZEN+Vega utilisation, sheduler fixes, optimisation for DX etc.
    Finally i can get Combined at 45+ FPS not 30'ish.

    Note:
    Closer to 100-120Hz gaming at 1440p on Vega UV+OC
     

  5. sideeffect

    sideeffect Master Guru

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    GPU:
    Vega 56
    Yes already using Windows 1903 but the improvements were already there with 1903 + 19.4.3 driver. 19.5.1 hasn't really given any extra.
     
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  6. OnnA

    OnnA Ancient Guru

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    7,960
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    GPU:
    Vega 64 XTX LiQuiD
  7. mtrai

    mtrai Master Guru

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    GPU:
    PowerColor RD Vega
    [​IMG] Was gonna install the drivers yesterday..but was drinking...on 1903 as I have said...finally I can post some public scores since I am using the released driver today.
     
    Last edited: May 14, 2019
    Kazablanka likes this.
  8. OnnA

    OnnA Ancient Guru

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    GPU:
    Vega 64 XTX LiQuiD
    Now testing this one (so far is OK)
    Don't look at GPU/HBM2 clocks it's Desktop/MtG Arena Gaming setup (30tW)

    Edit (not stable >1150MHz)
    Stable for Vampyr at 1120MHz

    This one is stable (old pic. deleted)
    This is 1185MHz HBM2 Stable settings.
    3Dmark run at 1175Mhz without a hitch (Test this one)

    [​IMG]

    1200 is artifact show :p

    [​IMG]

    Note:
    As always every GPU is different, try & error is the best route.
    It's starting point, what we can achieve.
    Greets :cool:
     
    Last edited: May 14, 2019
    Jackalito likes this.
  9. Kazablanka

    Kazablanka Member

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    GPU:
    Rx vega 64
    At what clocks is this score?
     
  10. mtrai

    mtrai Master Guru

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    GPU:
    PowerColor RD Vega
    The clocks for that was 1752 and 1130
     
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  11. sideeffect

    sideeffect Master Guru

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    GPU:
    Vega 56
  12. mtrai

    mtrai Master Guru

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    GPU:
    PowerColor RD Vega
    I just posted my 29093 Firestrike score, with details using the latest driver and Windows 1903 as frontpage news....was that the correct thing to do? I do not wish to piss anyone off. But I do think...even it was not mine...that an air cooled Vega 64 could hit that level.
     
  13. Synoxia

    Synoxia Active Member

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    GPU:
    Rog Vega 64
    [​IMG] anyone has a clue why this isnt stable? hbm temp don't go over 70c, core doesn't go above 66c. I can't even touch HBM clock let alone timings -.-
     
  14. OnnA

    OnnA Ancient Guru

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    GPU:
    Vega 64 XTX LiQuiD
    Here some knowledge -> http://alexanderhuzar.angelfire.com/...am_timings.htm

    Note:
    Do note that every GPU is a little different, make sure You go (as i did) Try & Error Path.
    Our Users settings are for starting point.

    Good staring point at 1000-1120MHz HBM2
    tCL 18 30 14 10
    tRCAB 44 43 14 14
    tRRDS 3 4 5
    tREF 24000

    It's a starting point,

    Remember that not every Mem Tweak will work for any OC boost for memory
    What is stable for 1100MHz can be unstable with 1150MHz etc. (try to check for stability when HBM is at 1120-1150MHz if You can)

    ==
    Up Synoxia
    Try first to find good values at 950MHz HBM2 then adjust and seek stable settings.
    Good Voltage for HBM2: 931, 937 & 943
    ==
    Im testing now this OC (so far is stable for me in: BFV MP & other games)

    [​IMG]
     
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  15. xalucardx

    xalucardx New Member

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    GPU:
    AMD Radeon VII
    Also based on my testing, games benefit more from higher memory clocks than bandwidth (at least with Radeon VII). Also, just like RAM, looser clocks allows for higher memory frequencies which so far seem to affect framerate in games more than having tighter timings. Increasing the Radeon VII from ~750 GB/s at stock settings to ~1000GB/s showed very little improvement when it came to games, but pushing the HBM2 past its 1200MHz limit (1275MHz) showed better results than timings change. Combining the 2 resulted in very little changes also. Right now I don't have pictures to show, but I can make a more detailed post when I get home if people are interested.
     

  16. OnnA

    OnnA Ancient Guru

    Messages:
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    GPU:
    Vega 64 XTX LiQuiD
  17. Sakaal1

    Sakaal1 New Member

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    GPU:
    Vega 56
    My current settings for Vega 56 Red Dragon (hynix), only changed the ones in marked in red. Other timings seemed already fairly low, compared to other V56 seen here. No time to test one by one so I just went for a quick tweak for now. Any idea which ones are most impactful in gaming?

    [​IMG]
     
  18. OnnA

    OnnA Ancient Guru

    Messages:
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    GPU:
    Vega 64 XTX LiQuiD
    ^^ Update You RIG (Sig)
    Still Fury ;)
     
  19. Sakaal1

    Sakaal1 New Member

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    GPU:
    Vega 56
    thanks :D
     
  20. xalucardx

    xalucardx New Member

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    GPU:
    AMD Radeon VII
    I see that on Vega56/64 works very well, but I think for Radeon VII its a bit different story. Regardless I'll keep testing and adjusting timings to see if I can get better performance.

    Here's a comparison at 1275MHz Memory Frequency. Left is with adjusted timings:
    [​IMG]

    The performance gain, in this case, is so small that's basically insignificant.
     

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