SYNCHRONOUS VERSUS ASYNCHRONOUS NAND FLASH MEMORY
In the past few months, another chapter has been added to SSD selection which has to do specifically with memory. Whereas the original run of SSDs were being released with synchronous or toggle mode NAND flash modules, SSDs have now been introduced with asynchronous NAND flash memory. Many SSDs with synchronous or toggle mode memory are now being marketed with words such as ‘Premium’ or ‘Enthusiast Edition’.
The difference between the two is very simple. SSDs that utilize premium memory are more expensive and perform better when transferring incompressible files such as music, photos and video. Conversely, SSDs that utilize asynchronous NAND flash memory offer less performance ‘on paper’ however are less demanding on the pocket book. The typical consumer, and even the experts, cannot tell the difference between the two in every day use. I would suggest the less expensive SSD with ‘async’ memory is meant for the everyday typical user whereas the more expensive premium SSD is meant for photographers, videographers and those involved in the music industry.
In an earlier report, we compared two Corsair SSDs and did a thorough job of clarifying and displaying performance results for both synchronous and asynchronous memory. It will also show the different modules and explain how to differentiate between the two.
We should apologize right off because this paper started as a one page brief but resulted in being three times that in an effort to cover as many of the questions that would have risen as possible. As difficult as many would like to believe a basic understanding of solid state drives is, it is truly all about speed and understanding how that speed is achieved. By doing so, the reader enables themselves to understand how a SSD can benefit their purpose and it also enables them to select the best SSD for the job at a price commensurate with their need.
Having said that, its necessary that I add that I do not consider myself to be an industry expert in any way and am always open to constructive response to help build this paper if I have erred in any way. I would suggest that like most readers, I sat four years ago where most sit today, in that, I knew nothing about SSDs and everything provided to me since has been through hands on, reading articles like this and my relationships with SSD manufacturers.
In case this article has reached you through one of the many search engines, we should mention that this is the third in our series of SSD Primer articles meant to help us all along in our understand of solid state drives.
- BENEFITS OF A SOLID STATE DRIVE – AN SSD PRIMER
- SSD COMPONENTS AND MAKE UP – AN SSD PRIMER
- SSD TYPES AND FORM FACTORS – AN SSD PRIMER
- SSD ADVERTISED PERFORMANCE – AN SSD PRIMER
- SSD MIGRATION OR FRESH INSTALL – AN SSD PRIMER
- GC AND TRIM IN SSDS EXPLAINED – AN SSD PRIMER