12 ms·
But what's the latency? I'm inclined to mention that a truck full of tapes hurtling down a freeway has a 'high bandwidth'.
by zacharyvoase 14y ago
But what's the latency? I'm inclined to mention that a truck full of tapes hurtling down a freeway has a 'high bandwidth'.
- unwind 14y agoI tried searching the spec itself (http://hybridmemorycube.org/files/SiteDownloads/HMC_Specification%201_0.pdf http://hybridmemorycube.org/files/SiteDownloads/HMC_Specific...) but it doesn't seem to contain any specifications about the latency. Lots of talk about latency-minimization though, but it seems this is basically a packet-oriented interface (with CRC on packets, retries and stuff) so I guess latency will be larger than with today's DDR interfaces. Perhaps computer systems will have both DDR memory and HMC, letting the OS and/or applications decide how to distribute access for maximum performance.
- jcr 14y agoI haven't read the 1.0 spec yet but if the marketing in their FAQ is to be believed, they claim "will provide a substantial system latency reduction" http://hybridmemorycube.org/faq.html http://hybridmemorycube.org/faq.html
- ippisl 14y agoThe 1.0 spec is at: hybridmemorycube.org/files/SiteDownloads/HMC_Specification_1_0.pdf