AMD Radeon RX 6900 XTX Engineering Sample

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Apr 23, 2021.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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    So yeah, the beefy Radeon RX 6900 XTX (most unlocked GPU) was spotted and photographed, as an engineering sample even. Spotted on Weibo, a Chinese social website, a user has posted photos of what seem...

    AMD Radeon RX 6900 XTX Engineering Sample
     
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  2. caldas

    caldas Member

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    He we go again AMD XTXTXTX
     
  3. Undying

    Undying Ancient Guru

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    Love the looks.
     
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  4. wavetrex

    wavetrex Maha Guru

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    I wonder if we're going to see a refresh this year ? Not expecting new generation ( aka, RDNA3 ), but perhaps a RDNA2 with less cut shaders and higher boost clocks are fasible (like, AMD's "Super" variants)

    By the time the mining craze dies down, these might actually exist at a more reasonable price.
     

  5. Kosmoz

    Kosmoz Member Guru

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    I think this is the only "new" card from AMD. They can't sell them enough... compared to nvidia the entire lineup is almost nonexistent. Although when in stock both nvidia and AMD cards have x2 or x3 prices over MSRP, so who cares really...
     
  6. Kevin Mauro

    Kevin Mauro Master Guru

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    Wow, it looks very nice (aesthetically) I like the metal front but wonder how the final will turn out...
     
  7. Turbogear

    Turbogear Member Guru

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    Maybe AMD sell some of these directly through their shop some day.
    120mm radiator if true would not be enough to sufficiently cool it if one want to do some real OC on it like on other XTXH cards which come with LC like Toxic Extreme or Liquid Devil Ultimat.

    I mean most probably this will be limited then to something like 303W default power as 6900XT Ultimate the air-cooled version is.
    The Liquid Devil Ultimate has 332W limit so total 382W with 15% from driver.
    Because 6900XT Liquid Devil Ultimate is custom cooled you can keep junction temperatures in control with strong enough loop.
     
  8. Fediuld

    Fediuld Master Guru

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    FuryX was able to take 453W and worked fine with a single 120mm fan.
    Add a second one to push if need to be.

    Had it with the UEFI bios not the original and was able to clock it really high and even at over 400W was working well with the single rad.

    Don't forget you only need a single 120mm rad per device, 360mm is just to cool well everything and even 240mm can do the job cooling both CPU & GPU if you DO NOT use Intel CPU :D
     
  9. V3RT3X79

    V3RT3X79 Member

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    after the RX 6900 XTX , the RXTX 6900XX XTX ...
     
  10. Undying

    Undying Ancient Guru

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    RX6950XTX ;)
     
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  11. rl66

    rl66 Ancient Guru

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    It never leave, i have a polaris limited edition XT X.
     
  12. Undying

    Undying Ancient Guru

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  13. haste

    haste Maha Guru

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    I've always been wondering what would 384bit 24GB VRAM and 192MB/256MB IC do to this GPU. Sadly, the 6900XTX will not be it.
     
  14. Turbogear

    Turbogear Member Guru

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    Not if you want to push the frequency high on this card without junction temperature going out of control. :D

    XTXH is very cable to go high on OC but if the cooling is not sufficient the high clock will not be possible to sustain for longer periods.

    I have 6900XTU Liquid Devil Ultimate which is in a loop together with 5900X.
    I have 1x120mm + 1x240mm +1x360mm rads.
    With curve tuning on 5900X and OC on Liquid Devil to
    2750MHz@1175mV, I can maintain junction 84°C on the 6900XTU.

    I had before 6800XT Red Devil fan cooled for a few day and there with moderate OC and very aggressive fan curve the Junction was still hitting 92°C.

    I had also 6900XT Toxic for a short time. That had LC with tripple fan which was good for cooling. Maximum junction on that I had was 87°C while pushing 384W core GPU power and 384A TDC with MorePowerTool.
    I am not sure how one 120mm rad will be able to keep junction temperature from going very high if you want to push similar power setting on this 6900XT.:rolleyes:

    FuryX was my last card that was not custom water cooled. :p
     
    Last edited: Apr 26, 2021
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  15. Alessio1989

    Alessio1989 Ancient Guru

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    1 engineering sample, 10 sample for markets (ehm for youtubers)
     

  16. Herem

    Herem Active Member

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    If only the extra X stood for GDDR6X memory we might have finally seen what this card is fully capable of at higher resolutions.
     
  17. JonasBeckman

    JonasBeckman Ancient Guru

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    Curious to see what AMD's version of the Navi21XTXH can do if this progresses to a actual product but if it is XTXH this would also be the worst of the current trio of existing cards for this chip.

    Which let's see that would be these now I think.

    AMD 6900 XTX (If it happens.)

    Sapphire 6900 (U) XT Toxic
    ASRock 6900 (U) XT Formula OC
    Power Color 6900XT (U) Red Devil

    and

    Power Color 6900XT (U) Red Devil Liquid

    Something like that, AMD would have a water cooling kit giving it a bit of a edge over air cooling plus it would not be quite as bulky but then it would be held back by the 2x 8-pin design unless they also change that.
    Sapphire and their take on the new Toxic gets a 8+8+6 curiously enough.

    And the rest are 8+8+8

    Looking at the bios files on Tech Power Up it's around 300 - 330W and the 6900 is still somewhat power limited, within the reference limits within the reference limits since for whatever reason AMD keeps the 15% power draw slider thing it probably works but the cards don't get full "Unleashed" until you provide a bit more than that which you would need the additional power connector to fully leverage before hitting the voltage cap or thermal limit instead of being power draw limited. :)

    But if AMD uses 8+8+6 or a triple 8-pin power delivery that's negated and then it has an advantage being liquid cooled and sustaining higher clocks before hitting the junction thermal throttle point for the temperature or possibly the voltage limit.
    Assuming these are the best binned Navi21 chips the 1.2v could be able to push it a bit higher although current reviews don't do any favors for any of these you pay 2x to 3x the cost for a stock overclock and maybe an additional 3 - 5% gain before hitting the power limit again.


    It's going to be like these Midnight Black editions or just about any 6000 series stock but if AMD can maintain them on their own website at more sane pricing at least that also makes these a viable purchase over the ridiculous 2500 Euro or US Dollar price range to the utterly insane 4000 US Dollars or Euro some stores are charging for these Navi21 XTXH chip GPUs.


    EDIT: Also would be fun to see more benchmarks involving More Power Tool putting those 400 - 500W total possible to some use instead of having the GPU shut down around 350 - 400W with the extra power connector and maximum sustainable power draw increase.

    Liquid cooling record is fun and all but peak regular usage and limits for the GPU would be entertaining to see as well I don't expect too much over the 6900XT and if kept cooled 2.5 - 2.6 Ghz seems like it's doable.
    But a 2.8 Ghz cap is still a nice increase although yeah the current price situation is kinda crazy ha ha.

    Or what it would cap at, higher limits and all but I don't expect the chip to hit 3.0 Ghz easily.
     
    Last edited: Apr 26, 2021
  18. Agonist

    Agonist Ancient Guru

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    This is not here we go again. XTX was the Top Model long time ago for Ati card. Stop being a dweeb
     
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