AMD Radeon R9 285 Review: Feat. Sapphire R9 285 Dual-X OC
by Ryan Smith on September 10, 2014 2:00 PM ESTThief
Our newest addition to our benchmark suite is Eidos Monreal’s stealth action game, Thief. Set amidst a Victorian-era fantasy environment, Thief is an Unreal Engine 3 based title which makes use of a number of supplementary Direct3D 11 effects, including tessellation and advanced lighting. Adding further quality to the game on its highest settings is support for SSAA, which can eliminate most forms of aliasing while bringing even the most powerful video cards to their knees.
With Mantle’s current performance regressions on R9 285, Thief is best played using the Direct3D renderer. In this case we have another situation where the R9 285 is doing unexpectedly well against the R9 280 and even R9 280X, edging out the latter in all three benchmarks. Thief does make use of SSAA at High and Very High qualities, so we may be seeing another case of color compression working its magic since the oversampling should improve image compressibility. Meanwhile for Sapphire’s factory overclock, the extra bandwidth savings offers some additional legroom to pull ahead of the stock card. This gives Sapphire’s overclock a roughly 4% performance advantage.
However looking at minimum framerates, Thief is also another good example to question whether 2GB is really enough VRAM. Strong average framerates give way to inferior minimums, especially at 2560. This is one of the reasons we believe that the R9 285 is not a good match for 2560 in the long term.
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Samus - Wednesday, September 10, 2014 - link
Am I missing something or is this card slower than the 280...what the hell is going on?tuxRoller - Wednesday, September 10, 2014 - link
Yeah, you're missing something:)Samus - Thursday, September 11, 2014 - link
BF4 its about 4% slower.Kenshiro70 - Wednesday, September 10, 2014 - link
"something of a lateral move for AMD, which is something we very rarely see in this industry"Really? Seems like the industry has been rebadging for the last two release cycles. How about starting to test and show results on 4k screens? 60Hz ones are only $500 now, and that will put a little pressure on the industry to stop coasting. I have no intention of spending money on a minor bump up in specs. Bitcoin mining demand can't last forever.
tuxRoller - Wednesday, September 10, 2014 - link
Error page 4: chart should read "lower is better"jeffrey - Wednesday, September 10, 2014 - link
Saw this too, the Video Encode chart Ryan.Congrats btw!
Ryan Smith - Thursday, September 11, 2014 - link
Whoops. Thanks.yannigr2 - Wednesday, September 10, 2014 - link
Great article and review.The only bad news here I think is Mantle.
But on this matter, about Mantle, maybe a slower processor could show less of that performance drop or even keep performing better than DirectX11. Maybe one more test on a slower core, on an FX machine?
mapesdhs - Wednesday, September 10, 2014 - link
What were AMD thinking? How can the 285 be a replacement for the 280, given itsreduced VRAM, while at the same time AMD is pushing Mantle? Makes no sense at all.
Despite driver issues, I'd kinda gotten used to seeing AMD be better than NVIDIA in
recent times for VRAM capacity. A new card with only 2GB is a step backwards. All
NVIDIA has to do is offer a midrange Maxwell with a minimum 4GB and they're home.
No idea if they will. Time will tell.
Ian.
Alexvrb - Wednesday, September 10, 2014 - link
There you have it, and with no issues with boost. Sorry Chizow, so much for that. :PThanks for the in-depth review, Ryan. It appears that power consumption is going to vary from implementation to implementation. Lacking a reference model makes it tricky. Another review I read compared Gigabyte's Windforce OC 285 to a similarly mild OC'd 280, finding a substantial difference in the 285's favor.