SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : WDC, NAND, NVM, enterprise storage systems, etc.
SNDK 245.85+0.5%Nov 19 3:59 PM EST
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: Art Bechhoefer who wrote (3825)6/11/2018 6:05:36 PM
From: SiliconAlley   of 4828
 
So-called 4-bit NAND, obtained by SanDisk through its acquisition of M-Systems, has not been seen as an attractive technology because the slower speed of 4-bit, compared with 3-bit per cell technology has been a real obstacle.

I would suggest you go back and review the M-Systems technology and the Samsung litigation. M-Systems never designed 4-bit NAND, and this is not what was acquired by Sandisk. The technology was (and still is) X4 - a 4 bit equivalent based on geographic placement of 3 bits. X4 is still in use in today's TLC products, and reduces cost by reducing overprovisioning.

Here is an article about Western Digital's first SSD based on X4 technology, announced at last years Flash Memory Summit: wdc.com

Excerpt for those who don't want to read the whole article: "Last month, the company also announced the development of its first four-bits-per-cell (X4) 3D NAND technology."

X4 does not eliminate the need for 3D, but allows higher densities (and lower costs due to reduction in overprovisioning) in 3D TLC products It remains alive and well, and is not an obstacle to anything. It has been in continuous use for nearly a decade. It is complimentary to other technologies, and not a replacement for other technologies.
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News