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7nm or 10nm are purely marketing terms. According to Wikipedia, Samsungs and TSMCs "7nm" process is comparably to Intels 10nm. And their 10nm process is only slightly better than Intels 14nm process. Don't let marketing fool you. Samsung and TSMC aren't really ahead of Intel.

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Can you specify the reference? If you're talking about feature sizes like fin height/pitch, tor pitch, IC... sort-of -- but only if you believe Intel's marketing material on what they are going to ship. Because they haven't shipped anything, they haven't had to commit to what that process _actually means_.

There are transistor densities for each of the manufacturer's processes here: https://www.anandtech.com/show/11850/intel-displays-10nm-waf...

According to this, Samsung and TSMC are ahead of Intel, since these two have shipped their “10nm” chips which are ahead of Intel’s top-of-the-line shipped chips in transistor density. When/if Intel ships their 10nm chips, however, the leader position in transistor density would be regained by Intel (by around a factor of two!). Unless TSMC/Samsung manage to squeeze out something better than their current tech before then.

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