3 ms·
At a minimum, we should be able to get everything to DRAM speeds. Beyond that you start to run into certain limitations. Achieving L1 latency is physically impo
by bob1029 1y ago
At a minimum, we should be able to get everything to DRAM speeds. Beyond that you start to run into certain limitations. Achieving L1 latency is physically impossible if the storage element is more than a few inches away from the CPU.
- devmor 1y agoMost new motherboards do already have the highest throughput M.2 connector very near the CPU. The most recent desktop I built has it situated directly below the standard formfactor x16 PCI slot.
- lmz 1y agoI think part of the reason why it's so close is also for signal integrity reasons.
- privatelypublic 1y agoAlso: routing PCIe lanes is a pain. Being able to take 4 pairs and terminate them makes routing everything else simple
- thfuran 1y agoFar more so than latency.
- account42 1y agoL1 latency also very much depends on storage size - CPU manufacturers aren't just keeping it small to help the RAM industry.