AMD 300 Series reviews ...

Discussion in 'Architecture and Products' started by pharma, Jun 18, 2015.

Tags:
  1. 3dilettante

    Legend Alpha

    Joined:
    Sep 15, 2003
    Messages:
    8,122
    Likes Received:
    2,873
    Location:
    Well within 3d
    That's a 5% difference between different rigs. Depending on how variable it is between systems and runs, single digits may not need that big a grain of salt. Turbo variations and the case/room/random factors could tip things.
     
  2. pharma

    Veteran Regular

    Joined:
    Mar 29, 2004
    Messages:
    2,930
    Likes Received:
    1,626
    With regard to review sites, I think the impact would be to "even the playing field" since the GPU's in question would be subject to the same conditions.
     
  3. pharma

    Veteran Regular

    Joined:
    Mar 29, 2004
    Messages:
    2,930
    Likes Received:
    1,626
  4. 3dilettante

    Legend Alpha

    Joined:
    Sep 15, 2003
    Messages:
    8,122
    Likes Received:
    2,873
    Location:
    Well within 3d
    One bit of data in there that would be nice to know was the claim that AMD redid the layout for the R300 series. Another site said that the new products were optimized without changing the masks, but there may have been a language barrier for that.
     
  5. pjbliverpool

    pjbliverpool B3D Scallywag
    Legend

    Joined:
    May 8, 2005
    Messages:
    7,583
    Likes Received:
    703
    Location:
    Guess...
    Alexko likes this.
  6. Malo

    Malo Yak Mechanicum
    Legend Veteran Subscriber

    Joined:
    Feb 9, 2002
    Messages:
    7,031
    Likes Received:
    3,101
    Location:
    Pennsylvania
    I'd have to agree. Putting that in a graph is reaching for something to say, especially given Fury as you state.
     
  7. UniversalTruth

    Veteran

    Joined:
    Sep 5, 2010
    Messages:
    1,747
    Likes Received:
    22
    Charlie is a hater who is so lazy to read the footnotes. :(
     
  8. SimBy

    Regular Newcomer

    Joined:
    Jun 21, 2008
    Messages:
    502
    Likes Received:
    135
    What the heck is going on here?!?!

    [​IMG]
     
  9. UniversalTruth

    Veteran

    Joined:
    Sep 5, 2010
    Messages:
    1,747
    Likes Received:
    22
    Nothing special. Just that the tess on Tonga is more advanced than that of Hawaii/Grenada.
     
  10. trinibwoy

    trinibwoy Meh
    Legend

    Joined:
    Mar 17, 2004
    Messages:
    10,430
    Likes Received:
    433
    Location:
    New York
    Catalyst 15.15 = magic tessellation driver?
     
  11. SimBy

    Regular Newcomer

    Joined:
    Jun 21, 2008
    Messages:
    502
    Likes Received:
    135
    That's not what I meant. Compare 285 15.5 vs 15.15
     
  12. UniversalTruth

    Veteran

    Joined:
    Sep 5, 2010
    Messages:
    1,747
    Likes Received:
    22
    I do not know because they show only two betas. Something broken in 15.5 was fixed in 15.15?

    From these comparisons one would think that AMD (and their competitors) intentionally spoil the fun with artificially lowered performance. Which of course sucks.
     
  13. Malo

    Malo Yak Mechanicum
    Legend Veteran Subscriber

    Joined:
    Feb 9, 2002
    Messages:
    7,031
    Likes Received:
    3,101
    Location:
    Pennsylvania
    Forced lower internal tessellation factor?
     
  14. 3dilettante

    Legend Alpha

    Joined:
    Sep 15, 2003
    Messages:
    8,122
    Likes Received:
    2,873
    Location:
    Well within 3d
    It looks like any example with Tonga and 15.15 takes a massive performance drop at low factors going by the way the Y axis is laid out, but this crosses over around 16 and degrades more gracefully. In the past, discussion of GCN's tessellation behavior brought up its apparent optimization for low factors and rapid falloff past that threshold. The newer driver might have taken a hit at <16x to allow for better consistency at higher factors.

    edit: Correction, my eyes did not parse the off shades of orange correctly. Tonga in general takes a massive hit at low factors relative to the 290, but the 15.15 drivers do something that significantly smooths out the behavior past 16.
     
    #54 3dilettante, Jun 20, 2015
    Last edited: Jun 20, 2015
    Lightman and 3dcgi like this.
  15. Alexko

    Veteran Subscriber

    Joined:
    Aug 31, 2009
    Messages:
    4,496
    Likes Received:
    910
    Significantly indeed: at ×64, Tonga goes from ~10 FPS to ~40 FPS, which isn't very obvious since this is on a log scale. I wonder what's going on in the chip.
     
  16. ToTTenTranz

    Legend Veteran Subscriber

    Joined:
    Jul 7, 2008
    Messages:
    9,996
    Likes Received:
    4,570
    Well, someone should tell the guys at pcgh.de that the visible spectrum contains more than the red and blue colors.
    That is probably the least ergonomic/legible graph I've seen in years.
     
    kalelovil likes this.
  17. pharma

    Veteran Regular

    Joined:
    Mar 29, 2004
    Messages:
    2,930
    Likes Received:
    1,626
    http://www.pcworld.com/article/2937...phics-cards-released-why-you-should-wait.html
     
  18. ToTTenTranz

    Legend Veteran Subscriber

    Joined:
    Jul 7, 2008
    Messages:
    9,996
    Likes Received:
    4,570
    Shameful display!
     
  19. SimBy

    Regular Newcomer

    Joined:
    Jun 21, 2008
    Messages:
    502
    Likes Received:
    135
    Why exactly is that so crucial? We know what the differences are. Higher core and memory clocks, 4 more gigs and
    much better cooling than ref R200.

    Wasn't the R200 series blasted by every review site for being loud and hot? There you go, compare it again.
     
  20. ToTTenTranz

    Legend Veteran Subscriber

    Joined:
    Jul 7, 2008
    Messages:
    9,996
    Likes Received:
    4,570
    That would be a valid argument except for the fact that no one has been making, distributing or selling reference 200 cards for a year or more.

    Moreover, there is no reference cooler for the new 300 series. AMD simply decided that the OEMs' job has been better than their own at designing the coolers.
    And the OEMs are simply using the the exact same coolers and PCB designs for the 300 series that they had been using for the 200 series.

    So what happened is that AMD did a top-to-bottom rebrand of their line-up based solely on the OEMs' effort to avoid AMD's terrible reference cards.
    Apart from the memory in Hawaii (which is also a bust, since the 390X costs more than the 8GB 290X models did) and demanding 6 MT/s GDDR5, there's really nothing of value here.
     
Loading...

Share This Page

  • About Us

    Beyond3D has been around for over a decade and prides itself on being the best place on the web for in-depth, technically-driven discussion and analysis of 3D graphics hardware. If you love pixels and transistors, you've come to the right place!

    Beyond3D is proudly published by GPU Tools Ltd.
Loading...