4 ms·
"cuts" are almost always fuses that are blown by ATEs during wafer manufacturing or post packaging tests. It is a bit flip. There is no extra cost.
by bravo22 5y ago
"cuts" are almost always fuses that are blown by ATEs during wafer manufacturing or post packaging tests. It is a bit flip.
There is no extra cost.
- zinekeller 5y agoAnd if it wasn't designed to be "blowed up" in the first place, in the hopes that the E-cores do have AVX-512? In that case, it's a literal cut and not simply blowing the fuse.
- marcan_42 5y agoThey always have fuses for this stuff. They have fuses for everything. Modern silicon has piles and piles of chicken bits and fuses to make sure they cover all their bases. There is zero chance they didn't have a hard fuse to disable a known controversial/segmentable feature like AVX-512.
- bravo22 5y agoIf it wasn't desigend to be disabled it would be buried under multiple and multiple metal layers. You can't "cut" it like a wire. Metal layers run all over the place [1]. Therefore it would have a an e-fuse or a regular old 'current' fuse -- which is just passing a calculated amount of current through an intentionally thin interconnect so that it burns away. 1 - https://static.techspot.com/articles-info/1840/images/2019-05-06-image-p.webp https://static.techspot.com/articles-info/1840/images/2019-0...