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A comment on Factoring 2048 RSA integers in 177 days with 13436 qubits and a multimode memory. Parent comment

Re:Factoring 2048 RSA integers in 177 days with 13436 qubits... by dcow on Tuesday March 23, 2021 @01:25PM (#26557587)
CPU cost is not dominated by the cache size is the problem, I think.
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Re:Factoring 2048 RSA integers in 177 days with 13436 qubits... by robocat on Tuesday March 23, 2021 @01:56PM (#26558007)
But I think that cache is roughly 50% of marginal production cost of the silicon chip die by mm2.

https://cdn.wccftech.com/wp-content/uploads/2020/11/AMD-Ryze...

https://images.anandtech.com/doci/16214/Zen3_arch_19.jpg

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Re:Factoring 2048 RSA integers in 177 days with 13436 qubits... by thesz on Tuesday March 23, 2021 @02:59PM (#26558881)
Cache is not memory, it is more complex - LRU and all that, often with several access ports (quadratic space dependence). SRAM is memory that is on-die and it is much cheaper.
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