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'Yields' are what fraction of the chips produced end up usable rather than damaged/broken. With 7nm, yields are down. With larger chips by area, yields are alwa
by Ilverin 8y ago
'Yields' are what fraction of the chips produced end up usable rather than damaged/broken. With 7nm, yields are down. With larger chips by area, yields are always lower than smaller chips.
So AMD can save money by putting extra memory rather than gpu silicon because the memory costs less than gpu silicon.
https://www.engadget.com/2019/02/07/amd-radeon-vii-review-video-4k-benchmarks/ https://www.engadget.com/2019/02/07/amd-radeon-vii-review-vi...
- holtalanm 8y agoumm.. the Radeon VII's memory makes up over half of the production cost of the card. HBM2 is not cheap.
- Ilverin 8y agoPer square millimeter, memory costs less than gpu silicon. (and Radeon VII's memory takes up more square millimeters than half). https://www.anandtech.com/show/13923/the-amd-radeon-vii-review/2 https://www.anandtech.com/show/13923/the-amd-radeon-vii-revi... (Also yield decrease per transistor added is nonlinear, so going from a 331 square mm to say 495 square mm would probably decrease yields by roughly half, even though number of transistors would be less than doubled).