I thought Intel 4nm was outsourced to TSMC. Or it's a rebranding of an earlier node. Am I mistaken? Do they actually produce that?
Here we are:
https://www.guru3d.com/story/intel-to-strategically-use-tsmc....
Here we are:
https://www.guru3d.com/story/intel-to-strategically-use-tsmc....
Intel's Lunar Lake low-power laptop processors shipping in a week will be the first all-TSMC x86 processor from Intel. Their desktop/high-power laptop processors (Arrow Lake) will also be all-TSMC, and should be launching this fall. After that, Intel intends to resume using their own fabs for consumer processors with their 18A process. There are some datacenter processors using "Intel 3" and the 20A process was cancelled in favor of the more fully-featured 18A.
(In case of nitpicks: Intel is also manufacturing the silicon interposers that the chiplets are mounted on, but since these dies are completely passive and have no transistors, I'm not giving them credit.)
Moreover, the new Intel 4 process had low fabrication yields, so Intel has produced less Meteor Lake CPUs than it could have sold.
Nevertheless, the Intel 4 process has demonstrated a much greater energy efficiency than the previous Intel 7 process, which is why the Meteor Lake CPUs beat easily the older Intel CPUs in multithreaded benchmarks, where the CPU performance is limited by the power consumption.