AMD Radeon R9 285 Review: Tonga and GCN Update 3.0

Reviews
By Don Woligroski, Igor Wallossek
published

On paper, the new Tonga-based R9 285 looks to be slightly slower than the R9 280 it is intended to replace, but there's more than meets the eye.

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Watch Dogs and Far Cry 3 Results

Now for Watch Dogs, and another sterling example of the Radeon R9 285 keeping up with the Radeon R9 280. There's not much else to say here except there are some significant frame time variance spikes across all cards, and this game isn't particularly smooth when travelling the highway at high speeds into new areas that probably cause a lot of map loading on-the-fly.

Finally, let's consider Far Cry 3. We suspect this game engine doesn't give the Radeon R9 285 a lot of room to make use of lossless color compression, as the Radeon R9 280 bests it here. That might make sense considering the detailed gradients on the lush foliage. Regardless, the Radeon R9 285 doesn't do badly here, either, tying with the GeForce GTX 760. As for frame time variance, this game displays spikes at various points in the game regardless of graphics hardware.
AMD Radeon R9 285
AMD Radeon R9 285 Compact

Don Woligroski
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64 Comments Comment from the forums
  • m32
    I wanted to see the GPU die and OCing results. :(
    Reply
  • JeanLuc
    The idle power consumption numbers are odd, the previous generation cards use less then at idle didn't they? Not that 15 watts is going to break anyone's bank account but its strange nether the less.

    Good to see AMD have tackled the noise and temperature issues that have plagued it's previous 28nm cards as well but it's a bit late in the day given that 20nm shouldn't be to far off now.
    Reply
  • chaospower
    TL;DR Pay more to get the same performance in a more power efficient form.
    Reply
  • gear999
    Really nice article guys. I'm impressed by how the 285 actually was able to keep up with the 280. And I'm shocked by the fact that The $250 Nvidia card loses to a $170 AMD card. Thank god I bought a GTX 770 :P

    Also, on the last page, you guys wrote R7 270X instead of R9, and in the chart it says "Relative to Radeon HD 7950 Boost". Oh, and in the Pros section, it says the 285 has R9 260 like performance?

    Thanks for the proofread, fixing it now! :)
    Reply
  • Mike Stewart
    wow ! at 250$ it actually is a better card even than 280X !! and it was meant for 760....but as it shows here even a 270X is a WAY better card than 760....
    Reply
  • tomfreak
    Had the tonga 285 come with a 6GHz/7Ghz GDDR5 & 4GB VRAM, the result will be a lot different. Whats with AMD putting on a 5500 memory? facepalm.jpg
    Reply
  • srap
    While this is really a third GCN iteration, showing it as a version number of 3.0 (as in: "Tonga and GCN Update 3.0") makes no sense for me.
    Reply
  • Amdlova
    some one write this with a .45 acp on the head. I see some error on numbers models etc...
    I prefer get a r9 280 and downclock get same results. I can't see the point of this heat on graphics. maybe drivers. OR THIS IS HAWAII XT! Too much Heat!
    Reply
  • Amdlova
    I wanted to see the GPU die and OCing results. :(
    I think the guys see if they hit the OC the room Will burn! maybe a problem with drivers.
    Last time i see that Heat 290x tests. lol!
    Reply
  • Gillerer
    On the first page, it says "Improvements are always welcome but with the memory interface cut in half compared to the Radeon R9 280,...".

    But in fact, the memory interface was cut by a third (384 bit -> 256 bit), not half.

    Good point, fixed! Thx.
    Reply