3 ms·
Litterally not at all. L1 cache is 3-5x slower then a CPU register and it has a ~532GiB/s thought put. DDR4 is ~2GiB/a per channel. Also DDR has extreme laten
by valarauca1 9y ago
Litterally not at all.
L1 cache is 3-5x slower then a CPU register and it has a ~532GiB/s thought put. DDR4 is ~2GiB/a per channel.
Also DDR has extreme latency due to its distance from the die.
- snerbles 9y agoPhysics is hard. In the cycle of a 2400MHz DDR4 clock, a photon travels 12.5cm. The memory bus distance is on a similar order of magnitude. Main memory latency will be the big performance bottleneck for the foreseeable future.