Source (anandtech)[...]
we’ll start off with how the R9 Fury compares to its bigger sibling, the R9 Fury X. Although looking at the bare specifications of the two cards would suggest they’d be fairly far apart in performance, this is not what we have found. Between 4K and 1440p the R9 Fury’s performance deficit is only 7-8%, noticeably less than what we’d expect given the number of disabled CUs.
In fact a significant amount of the performance gap appears to be from the reduction in clockspeed, and not the number of CUs. And while overclocking back to R9 Fury X clockspeeds can’t recover all of the performance, it recovers a lot of it. This implies that Fiji on the whole is overweight on shading/texturing resources, as it’s not greatly impacted by having some of those resources cut off.
Consequently I can see why AMD opted to launch the R9 Fury X and R9 Fury separately, and to withhold the latter’s specifications until now, as this level of performance makes R9 Fury a bit of a spoiler for R9 Fury X. 7-8% makes R9 Fury notably slower than R9 Fury X, but it’s also $100 cheaper, or to turn this argument on its head, the last 10% or so that the R9 Fury X offers comes at quite the price premium. This arguably makes the R9 Fury the better value, and not that we’re complaining, but it does put AMD in an awkward spot.
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