3 ms·
(longer instructions decoded into a RISC-like 'microops'). The thing is, in practice, this hasn't been true since 1985. Nobody actually uses the legacy instru
by DarkShikari 15y ago
(longer instructions decoded into a RISC-like 'microops').
The thing is, in practice, this hasn't been true since 1985. Nobody actually uses the legacy instructions that are "decoded into RISC-like microops" except people writing 4K demos. In reality, ARM instructions are actually longer on average, and more complex on average. Nor is this a bad thing: it means that ARM IPC is more valuable than x86 IPC.
ARM's advantage is that their instructions are longer, more complex, and easier to decode: not that they're "simpler and more RISC-like". RISC, at least in its original sense, is as dead as a doornail.
- ikono 15y agoWhat's Intel's advantage(aside from process)? And why hasn't there been a competitive ARM chip in the high performance market?
- DarkShikari 15y agoIntel's advantage: 1. Decades of experience, smart people, and good chip design. 2. Making a chip with Core i7-like power is hard, even an ARM. It'd probably be a totally new experience for most ARM chip designers, very expensive, and it might not even sell.