The Cause Of And Fix For Radeon R9 290X And 290 Inconsistency

AMD’s Solution Surfaces

Shortly after AMD Radeon R9 290 Review: Fast And $400, But Is It Consistent? went live, AMD issued the following note to media:

“A media outlet has uniquely reported instances of AMD Radeon R9 290X boards purchased in retail that have exhibited an uncharacteristic level of performance variance as compared to press samples issued by AMD. We’re working to secure the board(s) in question for further analysis. Boards purchased by other media outlets have not exhibited similar characteristics that we’re aware of. In the meantime, we’ve identified areas where variability can be minimized and are working on a driver update which will minimize this variance. We will provide an update shortly.”

The official explanation for the numbers we reported in our R9 290X and GeForce GTX 780 Ti reviews is that Radeon R9 290X uses PWM to control fan speed. The fan it uses purportedly has a +/-300 RPM margin. So, 40% does not necessarily mean the same rotational speed on every card. But AMD claims it was not prepared to see variance as severe as what we saw. Company representatives say R9 290X should be spinning at 2200 RPM (although we've seen no evidence of any 290X at 2200 RPM/40%). Already, that puts Asus’ board beyond the fan’s specification at 1850 RPM.

Here in Bakersfield, CA, it still gets fairly warm during the day. I have to keep a thermal probe in the lab to ensure consistent-enough temperatures for testing. As I was taking measurements for this piece, I was seeing between 78 and 80 degrees Fahrenheit. One morning, I walked into the office and it was closer to 74 before benchmarking commenced. At that temperature, Sapphire's Radeon R9 290X behaved almost as well as AMD's press card in a 78- to 80-degree room. The reference thermal solution is operating very close to its limit, making R9 290X very sensitive to environmental changes. That's just one of those things you have to consider when you buy a card with such a wide operating range. Relief is only going to come in the form of more effective cooling from partners.

Now, all of this was to describe what we were seeing up until today (and what other outlets were commenting on). Hours ago, though, AMD issued this follow-up:

We’ve identified that there’s variability in fan speeds across AMD R9 290 series boards. This variability in fan speed translates into variability of the cooling capacity of the fan-sink.

The flexibility of AMD PowerTune technology enables us to correct this variability in a driver update. This update will normalize the fan RPMs to the correct values.

The correct target RPM values are 2200 RPM for the AMD Radeon R9 290X ‘Quiet mode’, and 2650 RPM for the R9 290. You can verify these in GPU-Z.

Roughly translated, this means that retail and press cards are being altered via software to operate at the same rotational speed under load. This would be a great thing if AMD was standardizing on the press card's fan, since that's the board we reviewed and praised. However, it's using this opportunity to put an additional 150 RPM through the 290X's fan, presumably to sustain higher clock rates for longer, improving performance. The side effect, of course, is higher power consumption and increased noise.

So, let's get Catalyst 13.11 Beta 9.2 installed and try again:

With the exception of the press card shooting up about 60 RPM for no clear reason, AMD's new driver successfully gets all three cards running around 2200 RPM. I don't have the same mic setup as Igor here in my lab, so I can't give you a good noise comparison. However, the card is noticeably louder than it was at 2050 RPM.

Clock rates are higher across the board, as you'd expect after increasing cooling capacity. AMD's own press board now averages 944 MHz, up from 917 MHz. Asus' troubled retail card settles at 863 MHz. Meanwhile, Sapphire crests 906 MHz in our test, on average.

Frame rates improve, too. The 11% variability we saw previously is down to 6%. That's great news. Remember that we're still dealing with the same reference cooler though...and it's getting louder. Fan speed as a percentage creeps up as high as 46% in the case of Asus' card, turning Quiet mode into Not Quite Quiet mode. 

AMD is basically doing two things. First, it's fixing an issue that should have never made it past quality control and tightening up the variance between Radeon R9 290X cards in the wild. Simultaneously, it's pushing average clock rates of all cards higher using a faster fan speed setting that no board we've seen used previously. Our Battlefield 4 benchmark illustrates this nicely. By default, 190 MHz separated the average core frequencies of our fastest and slowest samples. After AMD's newest driver build, that number shrinks to 81 MHz.

This thread is closed for comments
330 comments
    Your comment
  • xiinc37
    This kind of thing is why I use msi afterburner. Just set your own fan curve.
  • tttttc
    I never understand why ANYONE will buy the reference design cards.... even for the GTX780, the aftermarket cooler is way better and quieter than the stock fan.
  • eldragon0
    Thank you so much for this article, I've been waiting on a write-up of this sort. There is one thing I'd love to see. Assuming the 290 and the 290x have the same layout, is it possible for you to strap that aftermarket heatsink onto each of them and give us a comparison of both of them at retail without them being horribly throttled? I'd love nothing more than to see a 290 and a 290x head to head at full speeds !
  • itzsnypah
    845427 said:
    This kind of thing is why I use msi afterburner. Just set your own fan curve.


    That is not how powertune works.

    It's: Get Hot -> Get loud -> Drop clocks -> Get as loud as necessary to keep GPU from melting.

    So having a 'custom' fan curve does nigh nothing.

    E: I wonder what would happen if you fed the card hot air. What happens when you're at 100% fan speed and still pushing 96c+? Does it shut down, clock down even more or melt?
  • FormatC
    Quote:
    is it possible for you to strap that aftermarket heatsink onto each of them


    It is impossible. The reason is simple: thermal clue. As I wrote in my article about the thermal grease: after the burn-in it is nearly impossible to remove the small heatsinks. The risk to destroy the card is too high. This aftermarket cooler is good and quiet but it is a real one-way ticket. You can't return ;)

    For addition - I've done the same thing with R9 290 cards and another benchmark before AMD has changed the driver. We worked hard to detect the reason for this big variances. But it seems that the difference between the R9 290 cards is a little bit smaller.

    This was before:
  • Quaddro
    Praise this card..
    Now we can see 780Ti and 780 with more reasonable price..;)

    Still waiting msi hawk version or directCu version of both of this card..hope that series will handle the heat..

    Spend $100 more just for cooler (mk-26 + 2 fans) on reference card, is not a really good option..
  • Quaddro
    -double post- :D
  • Nintendo Maniac 64
    I wonder if the rest of the performance difference now boils down to how the stock thermal paste was applied.
  • FormatC
    This I've tested too. No mentionable differences. May be my cards were assembled by a very accurate robot ;)

    The voltage is a little bit different:



    But this is not strange. Typical tolerance.
  • iam2thecrowe
    I cant stand all this variable clock rate BS ever since it was introduced in nvidia and amd cards. the card throttles in the most demanding scenario's, where you need it not to throttle, so the "boost clock" speeds are just there to inflate benchmark figures without any improvement in real world performance. On my cards, i force a stable clock speed with Nvidia inspector, negating boost clock, games run more stable and predictably, the way it should be.

    p.s. the add for nail fungus you have on your page toms, nearly made me vomit. please no more nail fungus adds!!!!!!!
  • eldragon0
    482859 said:
    Quote:
    is it possible for you to strap that aftermarket heatsink onto each of them
    It is impossible. The reason is simple: thermal clue. As I wrote in my article about the thermal grease: after the burn-in it is nearly impossible to remove the small heatsinks. The risk to destroy the card is too high. This aftermarket cooler is good and quiet but it is a real one-way ticket. You can't return ;) For addition - I've done the same thing with R9 290 cards and another benchmark before AMD has changed the driver. We worked hard to detect the reason for this big variances. But it seems that the difference between the R9 290 cards is a little bit smaller.



    Thanks for the reply! I'm still dying to see the the 290x does when it's fully unleashed. Keep up the good work :D.
  • s3anister
    Nothing wrong with the GPUs. Honestly I don't see any issue, if you buy the reference boards get a waterblock to go with it otherwise wait for the 3rd party solutions with better stock coolers.
  • natoco
    Sorry i did not catch that, could not hear you over your video card fan
  • Crashman
    1422415 said:
    I never understand why ANYONE will buy the reference design cards.... even for the GTX780, the aftermarket cooler is way better and quieter than the stock fan.
    Because to a CPU overclocker, the aftermarket cooler is crap? I just had the same style cooler on another card cause a factory-built PC overheat its CPU. As in thermal throttling. And the CPU was liquid-cooled!

    The type of cooler your praising blows heat into the case, rather than out of the case. They're just a bad design concept done right, as opposed to a good design concept that's poorly executed.
  • FormatC
    My wish: a R9 290/290X with a HIS DHE cooler (IceQ) like on 7950/70
  • Quaddro
    1422415 said:
    I never understand why ANYONE will buy the reference design cards.... even for the GTX780, the aftermarket cooler is way better and quieter than the stock fan.


    Well, reference card usually has the highest component quality..
    That means more durable and has longer life than common 3rd party cards (xfx, zotac, his, polor, and another lowly cheap brand)..

    i've still running my 4 years old 5850 reference card..overclocked to 1ghz since out of box, and cooled by mk-13..well, no issue until today, and still rock..
  • FunSurfer
    R9-290/290X + reference design cooler + Mantle (extreme card taxing) + august (mid summer) + no air conditioning = KABOOM!!!
  • scrumworks
    Storm in the water glass. Just because its AMD we are talking about here.
  • de5_Roy
    amd needs to be anal about quality check. take a page out of intel's q.c. playbook.
    the gpu is good, the ref. cooler is bad.
    to me, the press gpu still looks like a golden sample, the clockrate remains higher than retail ones throughout...

    will different cases affect hawaii performance with ref. cooler (or aftermarket cooler, when they launch)? imagine running a centurion cpu with reference hawaii boards in cfx.... (a scorpius gaming pc).
  • beavermml
    which means, whichever 3rd party that can develop a very good cooler will enable us to get more performance right?
  • jk47_99
    It has to be the TIM, but still something that should have been picked up by the QA process. It really is a poor quickfire response to just ramp up the fan speed and hope for the best. However in the interests of fairness, will you pick up a retail 780 Ti and make sure the performance matches the press card?
  • joditas
    Even with the new driver the 2 retail cards still aren't on par with press card. The differences are small but you can't ignore the impression here. Either their partners really drop the ball quality wise in manufacturing or there is problem with the chips, it's like Asus is 290X Lite, Sapphire is 290X Lite OC, and press card is regular 290X, the tiers still carry over to the new driver... I want to support you guys but you guys really need to step up to shake off the second-rate impression in many people's mind when come to quality control.

    THG what you need to do next is to test the power consumption of these cards with the new driver.
  • somebodyspecial
    388413 said:
    I cant stand all this variable clock rate BS ever since it was introduced in nvidia and amd cards. the card throttles in the most demanding scenario's, where you need it not to throttle, so the "boost clock" speeds are just there to inflate benchmark figures without any improvement in real world performance. On my cards, i force a stable clock speed with Nvidia inspector, negating boost clock, games run more stable and predictably, the way it should be. p.s. the add for nail fungus you have on your page toms, nearly made me vomit. please no more nail fungus adds!!!!!!!


    The difference is NV guarantees you won't go below what they advertise, and perhaps give you whatever is there extra free (there way ALWAYS means at very least you get what you paid for OR MORE). AMD seems to be the complete opposite of this strategy.
  • iam2thecrowe
    925801 said:
    388413 said:
    I cant stand all this variable clock rate BS ever since it was introduced in nvidia and amd cards. the card throttles in the most demanding scenario's, where you need it not to throttle, so the "boost clock" speeds are just there to inflate benchmark figures without any improvement in real world performance. On my cards, i force a stable clock speed with Nvidia inspector, negating boost clock, games run more stable and predictably, the way it should be. p.s. the add for nail fungus you have on your page toms, nearly made me vomit. please no more nail fungus adds!!!!!!!
    The difference is NV guarantees you won't go below what they advertise, and perhaps give you whatever is there extra free (there way ALWAYS means at very least you get what you paid for OR MORE). AMD seems to be the complete opposite of this strategy.


    good point, at least in reference to the 290(x) cards, nasty marketing, slows down when the going gets tough. performance is going to be extremely variable depending on your airflow setup/ambient temps. the 7xxx series and other 2xx series work the same as the nvidia cards with the boost clock. still BS though, the boost clock causes crysis games to crash, at least in the case of my gigabyte cards (although crysis 2/3 does warn on the disclaimer factory overclocked cards may not be stable in their games). Would be interesting to see long duration stability of these cards under load. 90c is too hot, they will develop micro cracks in the solder in under a year. i see many RMA's in the future for the 290 series.