throwarchitect

5 ms·

1. 1.▲
   by throwarchitect 6y ago

   The greater simplicity of ARMv8 and its fixed sized instructions definitely helps, but also Intel runs their cores at nearly 2x higher frequency, which means a lot less logic can be squeezed into a clock cycle. That makes it much harder to
2. 2.▲
   by throwarchitect 6y ago

   Guess where some of Intel's engineers have fled to? People move around, so it's not like one company has a strangle-hold on knowledge that can't be replicated by another company, especially when one of those companies is will
3. 3.▲
   by throwarchitect 6y ago

   That paper uses no actual benchmarks, but rather grabbed a single system utility and then hand-optimized it; SPEC and geekbench show x86-64 comes in well over 4 bytes on average.
4. 4.▲
   by throwarchitect 6y ago

   Considering that x86 is less dense than any RISC ISA, the "compression" argument behind CISC falls apart. No surprise a denser, trivial to decode ISA does better.
5. 5.▲
   by throwarchitect 6y ago

   > the M1 is fast isn’t due to technical tricks, but due to Apple throwing a lot of hardware at the problem. Apple threw more hardware at the problem and they lowered the frequency. By lowering the frequency relative to AMD/Intel