3 ms·
The chips and cheese number feels like an all-in number; get a timestamp, do a memory read (that you know will not be served from cache), get another timestamp.
by toast0 2y ago
The chips and cheese number feels like an all-in number; get a timestamp, do a memory read (that you know will not be served from cache), get another timestamp.
The anandtech article is latencies for parts of a memory operation, between the memory controller and the ram. End to end latency is going to be a lot more than just CAS latency, because CAS latency only applies once you've got the proper row open, etc.
- wtallis 2y agoGetting requests up through the cache hierarchy to the DRAM controller, and data back down to the requesting core's load/store units is also a non-trivial part of this total latency.