anthony8989
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Sakkura :
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Sakkura :
GPUs are usually not memory bandwidth starved,
They usually are.
The only reason the R9-285 manages to catch up with the R9-280 is because AMD invested more processing resources in texture compression and other bandwidth optimization tricks, same goes for Maxwell. But those tricks can only go so far
No, they aren't. If they were, Nvidia would have gained a lot from using a 384-bit memory interface for the GTX 980 and 970. They didn't, because it wasn't worth it.
Or - in my opinion - Nvidia didn't because it was an unnecessary expense. They already have all the Radeon cards beat by a significant margin on 256b interfaces. Stretching to 384b - no matter which way you look at it - only further increases the already large gap in performance at literally no benefit to the Geforce brand.
It is easy to imagine that 256b is cheaper than 384b. It's also easy to imagine that larger memory buffers equate to higher power consumption. So why jump to a more expensive card that consumes more power just to beat an already beaten competition. That's sadism!