7nm Design Challenges

[@jyoshisrikanth5829]

thanks, really worth knowing ..

[@nonames841]

7nm, 5nm, 3nm..... What fun!

[@William_sJazzLoft]

Jmho what nobody is bothering to mention is that when scaling down significantly one hits the wall called quantum physics and the uncertainty entailed therein. So, far none of the videos that I've watched discuss this. When one gets down to quantum dimensions, Newtonian mechanics no longer apply. This is essentially why it's more difficult and more expensive to produce devices at this level.

[@SperlingMediaGroup]

Quantum Effects At 7/5nm And Beyond semiengineering.com/quantum-effects-at-7-5nm/

[@William_sJazzLoft]

@@SperlingMediaGroup thank you for inserting the article. It definitely confirms my guess.

[@teresashinkansen9402]

Im not an expert so i have a question, at such small node sizes what are the effects of natural energetic particles on the components? for example if a cosmic ray hits the die and causes a cascade of ionizing particles would it damage components? how this could affect the lifetime of such chips?

[@SperlingMediaGroup]

That is definitely an issue. These so-called single-event upsets are known to flip bits in memory. At 7nm and beyond, with transistors packed so tightly together, an alpha particle could do damage. This is more of a problem at higher altitudes, but there has been some discussion about this at conferences.

[@jerrywatson1958]

@@SperlingMediaGroup It also depends on the material characteristics of the materials used in circuit design. I looked into micro chips (cpu's in particular) designed for radiation hardness. I don't remember the article but I guess you could google it. But they had a test circuit that they irradiated in a nuclear reactor for a period of time. I think after 3yrs of exposure they pulled it out and it was still functional with only slight discoloration. I guess they want to move on from i386 cpus in space.

[@infamous5014]

The creator of navi 7

[@nonames841]

Oh ya AI too!