Go Back   OC3D Forums > [OC3D] General Forums > OC3D News
Reply
 
Thread Tools Display Modes
 
  #1  
Old 11-05-19, 04:38 PM
WYP's Avatar
WYP WYP is offline
News Guru
 
Join Date: Dec 2010
Location: Northern Ireland
Posts: 14,991
SK Hynix starts Sampling 96-layer 4D QLC NAND

1Tb of QLC NAND per chip.



Read more about SK Hynix sampling their 96-layer 4D QLC NAND.

__________________
_______________________________
Twitter - @WYP_PC
Reply With Quote
  #2  
Old 11-05-19, 05:00 PM
NeverBackDown NeverBackDown is offline
AMD Enthusiast
 
Join Date: Dec 2012
Location: With the Asguardians of the Galaxy
Posts: 15,677
Doesn't last as long though. My only concern.
__________________
I am Iron Man.
Reply With Quote
  #3  
Old 11-05-19, 05:58 PM
WYP's Avatar
WYP WYP is offline
News Guru
 
Join Date: Dec 2010
Location: Northern Ireland
Posts: 14,991
Quote:
Originally Posted by NeverBackDown View Post
Doesn't last as long though. My only concern.
The same things were said about TLC once upon a time. A lot of this will be mitigated with smart controllers and newer NAND.

I'm trying to think of the last time I heard somebody say they had an SSD fail on this forum. That said, it will be interesting to see what the failure rates are on new QLC drives.
__________________
_______________________________
Twitter - @WYP_PC
Reply With Quote
  #4  
Old 11-05-19, 06:49 PM
NeverBackDown NeverBackDown is offline
AMD Enthusiast
 
Join Date: Dec 2012
Location: With the Asguardians of the Galaxy
Posts: 15,677
Well TLC wasn't much different in terms of longevity with MLC. QLC though is kinda halfing it. Which is a big difference.
__________________
I am Iron Man.
Reply With Quote
  #5  
Old 11-05-19, 10:17 PM
tgrech tgrech is offline
OC3D Crew
 
Join Date: Jun 2013
Location: UK
Posts: 980
The node size has increased with 3D NAND though so it's generally a net improvement in reliability with modern QLC. You gain more from moving to QLC and reverting/increasing node size than you do from shrinking nodes further/sticking with sub-20nm nodes and sticking with TLC. Node shrinks are the real killer with reliability.
Reply With Quote
  #6  
Old 12-05-19, 08:30 PM
Gothmoth Gothmoth is offline
Member
 
Join Date: Jun 2017
Posts: 226
Quote:
Originally Posted by NeverBackDown View Post
Well TLC wasn't much different in terms of longevity with MLC. QLC though is kinda halfing it. Which is a big difference.

halving it from TLC to QLC you mean?


well im not sure if that is right.

i read TLC (3D) has a lifetime of around 3000 cyles, QLC 1000 cycles (averaged).

but QLC drives should be bigger than most MLC or TLC drives.
so each cell should be used less or equal to smaller MLC/TLC drives.

i still have an intel Intel X25-M (MLC) from 2008 that runs fine.

it´s still used for caching in one of my systems.
for it´s 80GB size it has a lot of writes to handle.

so a 1GB QLC may has 10x less P/E cyles but 12.5 x more cells.

and i read QLC drives use beefier hardware, better write strategies to counter the wear.

if QLC lasts only 1/2 or 1/3 of the time (given that my MLC may work for another 4-5 years) im still fine with that.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump










All times are GMT. The time now is 04:30 AM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.