Can you compare synchronous and asynchronous NAND in terms of price and performance? And what is each typically used for?
Synchronous and asynchronous NAND, based on spec sheets, look remarkably similar in performance. However, they aren't, and the differences are non-trivial.
Synchronous NAND utilizes both the rise and fall of the signal wave to move data, giving it a potential of more than twice the performance than asynchronous (analogous to double-data-rate DRAM or DDR). Real-world numbers prove a much lower difference that ranges from 10 to 100% better performance depending on application.
Synchronous NAND is more expensive than asynchronous. Sync NAND is used when performance is everything, such as with gaming systems.
Also, what is toggle-mode MLC and what is it typically used for?
Toggle-mode MLC is asynchronous NAND that is supposed to provide similar performance as synchronous NAND, but at a lower price. Independent testing has not verified these claims yet. Toggle-mode MLC is also known as double-data-rate asynchronous NAND.
Dig deeper on Solid state storage technology
Related Q&A from Marc Staimer
Marc Staimer of Dragon Slayer Consulting explains what causes read disturbs and how flash vendors are mitigating the issue.continue reading
Marc Staimer of Dragon Slayer Consulting compares NVDIMM and memory channel flash, explaining the advantages and disadvantages of each.continue reading
Marc Staimer compares memory channel flash storage with PCIe connected flash and offers insight on the advantages and disadvantages of each.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.