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The RX Vega 64 Owners Thread

Discussion in 'Graphics Cards' started by Kaapstad, Aug 14, 2017.

  1. stuartharrison

    Gangster

    Joined: Nov 25, 2015

    Posts: 313

    You're probably better off undervolting it and pushing the power slider to +50%
     
  2. MCFC_ANDY

    Associate

    Joined: Aug 9, 2013

    Posts: 58

    i pushed the power to max, i couldnt get much more, it failed at 1800, have heard it will hit 1800, the memory is stable at 1000, i will have a read up to see whats best option.
    thx
     
  3. stuartharrison

    Gangster

    Joined: Nov 25, 2015

    Posts: 313

    1800 sounds ambitious. What clock speed is it holding during benchmarking?
    Undervolting removes the dips in performance - they'll hit boost speed, then dip right down.
    Undervolted, they'll hold a fairly constant speed, and run cooler.
    You'll probably get your memory to run at 1100mhz.
     
  4. TrixX

    Gangster

    Joined: Oct 4, 2017

    Posts: 437

    Location: Australia - Sunshine Coast

    1800 is manageable with only some very good silicon. Mine tops at ~1760 anything above that and it's crash city. Stuart's right on the memory too.

    BTW I got 7155 on 4K Opt in Superposition. Pretty old run too with 1750MHz P7, 1250mv and 1100MHz HBM2 leaving the value there at 945mv. Did that on 14.08.18. Probs had a 200% power limit reg change though knowing me :D

    I also have a water block so keeping the card cool is a bit easier.
     
  5. Vince

    Man of Honour

    Joined: Oct 30, 2003

    Posts: 7,051

    Location: Essex

    Ive been playing around anybody else tried the auto memory overclock?

    [​IMG]

    1235mhz memory and a big uplift in benchmarks.
     
  6. TrixX

    Gangster

    Joined: Oct 4, 2017

    Posts: 437

    Location: Australia - Sunshine Coast

    I'd give it a go if it didn't break my Core OC...
     
  7. Vince

    Man of Honour

    Joined: Oct 30, 2003

    Posts: 7,051

    Location: Essex

    doh i posted in the wrong thread... I should have posted in the radeon 7 thread.. my bad.
     
  8. TrixX

    Gangster

    Joined: Oct 4, 2017

    Posts: 437

    Location: Australia - Sunshine Coast

    Ah that makes more sense! 1235MHz on mem would be nuts on a V64 :D
     
  9. Chrisc

    Hitman

    Joined: Jun 29, 2016

    Posts: 581

    Location: Up Norf

    Decided to change the reference for the Strix, I went to a 1440/144hz monitor and the reference card was just too loud.

    [​IMG]
     
  10. Oblivion007

    Gangster

    Joined: Sep 14, 2015

    Posts: 131

    Location: Scotland

    Increasing mem to 1100mhz/1000mv helped me break the 7000 mark.

    Got some artifacting in ROTTR benchmark so scaled it back. Seems to be stable at P6 1695@1065mv P7 1730@1085mv. Gives me a score of 6974 in 4k superposition.

    I'm happy with that.
     
  11. stuartharrison

    Gangster

    Joined: Nov 25, 2015

    Posts: 313

    I was about to go straight to global wattman there :)
    Thought that sounded a bit good.
     
  12. stuartharrison

    Gangster

    Joined: Nov 25, 2015

    Posts: 313

    That's good - I had to go 1702@1150mv - mine doesn't feel stable if I drop the mv at that frequency.
    Gives me the same score, but you're getting it for less juice.
     
  13. gupsterg

    Hitman

    Joined: May 23, 2016

    Posts: 542

    Location: Lurking over a keyboard

    Coaxed a bit more from the V64.

    [​IMG]

    Passed 3DM stress tests of FS/FSE/FSU/TS/TSE and does well in f@h.

    As far as I'm concerned the gain is on stock effective GPU voltage. Below is f@h fully stock vs current setup.

    [​IMG]
     
  14. Grog

    Associate

    Joined: Feb 5, 2019

    Posts: 29

    I have had my V64 reference undervolted to 980mv and have been getting a steady 1500mhz. Earlier in the week I was able to pass most benchmarks/stress tests such as Heaven, Superposition (extreme), FS, FSE, TS etc without problem.

    But since yesterday it keeps crashing on TimeSpy. Even when I give it a lot more voltage it still crashes. When keeping an eye on the clocks I have noticed that TimeSpy boosts the clock higher than what is listed for P7 and then the crash happens. I don't know what is going on since I was able to pass TS without problems just a few days ago and I haven't changed anything since then.
     
  15. gupsterg

    Hitman

    Joined: May 23, 2016

    Posts: 542

    Location: Lurking over a keyboard

    I sorta use PL to control excess peak clocks for 3D loads. I'll tune it so it's just slightly above needed for profile, as not to throttle performance in benches I'd use.
     
  16. MCFC_ANDY

    Associate

    Joined: Aug 9, 2013

    Posts: 58

    think 1770+ is possible, been busy today so give a go in week, though im on air, i open the fron of case to get some more air in as gpu is a warm bugger to say the least
     
  17. Chrisc

    Hitman

    Joined: Jun 29, 2016

    Posts: 581

    Location: Up Norf

    Raise that 980mv slightly, see if it happens again.
     
  18. TrixX

    Gangster

    Joined: Oct 4, 2017

    Posts: 437

    Location: Australia - Sunshine Coast

    Not an option to go air for me. Ambient is around 30C currently...
     
  19. Kaapstad

    Man of Honour

    Joined: May 21, 2012

    Posts: 27,662

    Location: Dalek flagship


    Welcome and on TROH.:)


    The Roll of Honour.

    [​IMG]



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    To get on the Roll of Honour all you have to do is post a pic with your user name on it of your Vega 64.

     
  20. stuartharrison

    Gangster

    Joined: Nov 25, 2015

    Posts: 313

    My superposition scores have dropped right down - about 10%.
    So from 6871 to 6284 etc on my mid setting.
    Some drops are worse.
    Any idea what might be causing the throttling?
    Case side panel is off.
    I had another black screen freeze crash last night, whilst under light load.
    Does the card have any memory of these things and throttles itself?