3 ms·
Or if the bottleneck in your workflow is RAM read/write speed as opposed to RAM capacity. The RAM being on the same chip as the CPU/GPU gives it tremendously lo
by entropicdrifter 6y ago
Or if the bottleneck in your workflow is RAM read/write speed as opposed to RAM capacity. The RAM being on the same chip as the CPU/GPU gives it tremendously low RAM latency, which seems to be where it's getting much of its edge in these tests
- formerly_proven 6y agoThe M1 has pretty high memory latency at around 100 ns [1], which is significantly higher than either AMD or Intel for typical systems. Note that physical distance between CPU and memory is rather less important for latency, as DRAM is high latency in itself, so adding a few ns at most due to wiring is not going to matter. [1] https://www.anandtech.com/show/16252/mac-mini-apple-m1-tested https://www.anandtech.com/show/16252/mac-mini-apple-m1-teste...
- entropicdrifter 6y agoThanks for the thorough correction.
- deleted 6y ago[deleted]
- floatboth 6y agoThe RAM is not on the same chip. It's regular LPDDR4X chips on the same package (connected by regular-ass PCB traces, not even a silicon interposer like HBM would've been). It's clocked pretty high, but you can go even faster on DDR4 desktops.