3 ms·
Today there is a benefit from the higher code density of CISC. 1. Less memory bandwith expended moving instructuons into I-cache. 2. Less die area spent on I-ca
by dbcurtis 9y ago
Today there is a benefit from the higher code density of CISC. 1. Less memory bandwith expended moving instructuons into I-cache. 2. Less die area spent on I-cache per unit of "code functionality", however you mesure that.
RISC only made sense when logic cycle times, memory cycle times, and I/O cycle times were at rough parity.
- snvzz 9y agoIf you read the rest of the thread, you'd find that both of your points are moot, as RISC-V code density is no worse than x86-64. As for your claims on RISC not making sense, I'll just say it makes more sense than ever, as complexity leads to issues, which could affect security, and security is important in the present networked world.