The erosion of lower end discrete GPUs is a far larger mover of graphics revenues than mining or introduction of new products. Increasingly powerful integrated graphics from Intel and AMD is destroying the low end for discrete cards which used to be the foundation of GPU revenues. NVIDIA found a profitable segment to prop up revenues (compute cards) in the same situation and dominates it.This time last year was the mining craze
But the 16% drop in revenues for the Graphics and Computing was largely driven by the loss of CPU revenue. Intel had large gains in sales of desktop (3%) and mobile (11%) CPU units last quarter (which was up 1% vs Q4'13). Those kinds of shifts are devastating for AMD given its small share of x86 processors...
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Intel unit market share Q3'14 (in order of most to least profitable segments)
IDC Mercury Research
Server 98.5% 98.3%
Notebook 90.3% 92.9%
Desktop 81.8% 82.7%
giving AMD ~1.6% unit share in servers, ~8% unit share in notebooks and ~19% unit share in desktops,
while simultaneously getting lower ASPs in each segment