The R9 Fury X is not a case of AMD taking its existing tech and up-scaling it. The company probably can't do that anymore. AMD and NVIDIA's common foundry partner for GPUs, TSMC, has seen major setbacks in implementing its next silicon fabrication tech, which threw both companies' product-development cycles off the track. While it hit NVIDIA hard, which had to rework its "Maxwell" architecture for the existing 28 nm process, it hit AMD harder. The company was already hitting 275W TBP (typical board power) with its previous-gen high-end chip, the R9 290X, and making the kind of SIMD increase that it did with its new chip could have adversely affected TBP. The card has the same exact TBP as the R9 290X at 275W, but at a whopping 45% increase in its number-crunching machinery. So AMD has obviously done something very big with the physically very small R9 Fury X - High Bandwidth Memory (HBM).
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