3 ms·
It's not just the re-order buffer, the M1 also has 8-way decode (vs 4-way for Intel & AMD microarchitectures), and a 128 KiB L1D cache (vs 48 recently from Inte
by kinghajj 6y ago
It's not just the re-order buffer, the M1 also has 8-way decode (vs 4-way for Intel & AMD microarchitectures), and a 128 KiB L1D cache (vs 48 recently from Intel, and 32 from AMD), and that cache still has a 3-cycle latency. These all let an M1 chip keep up in single-threaded workloads @ 3.2 GHz with what the latest Zen 3 5950X can do @ 5.0 GHz.