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[Anandtech] IMFT Announce First 20nm MLC NAND for SSDs

post #1 of 25
Thread Starter 
http://www.anandtech.com/show/4271/i...or-use-in-ssds

Quote:
We just started testing SSDs based on IMFT 25nm NAND Flash and look at what Intel/Micron just announced? The first 8GB MLC NAND device built on a 20nm process. This is obviously an announcement of pre-production silicon, it’ll take IMFT until the second half of this year (at least) to start shipping production quality 20nm NAND.

Edited by DuckieHo - 4/14/11 at 1:26pm
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post #2 of 25
Im guessing this is a good thing since prices will go down but the erase cycles is getting worse and worse. Is this a sign that SSD are just a short-term thing between normal HDD and something more advance?
post #3 of 25
Yay! Even less life and even slower speeds, what's not to love?
post #4 of 25
As predicted the drops in price after each die shrink are becoming smaller. People who are still waiting for $1 per GB will be waiting a little while longer.

Hopefully drive manufacturers tweak their firmware and controllers so we don't get the same misconceptions about the 25nm NAND being less reliable and slower.
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post #5 of 25
Thread Starter 
Quote:
Originally Posted by Tennobanzai View Post
Im guessing this is a good thing since prices will go down but the erase cycles is getting worse and worse. Is this a sign that SSD are just a short-term thing between normal HDD and something more advance?
However, the number of PE cycles will not effect most users.

3000 vs 10,000 will not affect home usage.

Quote:
Originally Posted by SgtSpike View Post
Yay! Even less life and even slower speeds, what's not to love?
Less life... that you would not make us of.

Slower speeds? NAND is getting faster. Current ONFI 2.2 specs for 200MT/s while ONFI 3.0 specs for 400MT/s per chip.

OCZ made the mistake of using 25nm NAND on the SandForce SF-1200/1500 controller without optimization.
Edited by DuckieHo - 4/14/11 at 10:32am
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post #6 of 25
Duckie,

Do we not start seeing leakage through quantum tunneling at around 20nm?
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post #7 of 25
Thread Starter 
Quote:
Originally Posted by kppanic View Post
Duckie,

Do we not start seeing leakage through quantum tunneling at around 20nm?
With the current technology, the limitation of NAND is around 20nm. However, who knows what they are researching in the labs or do with ECC.


Just a note... Samsung and Hynix have previously announced 20nm NAND but they are just not SSD quality. Changing topic.
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post #8 of 25
Quote:
Originally Posted by DuckieHo View Post
However, the number of PE cycles will not effect most users.

3000 vs 10,000 will not affect home usage.


Less life... that you would not make us of.

Slower speeds? NAND is getting faster. Current ONFI 2.2 specs for 200MT/s while ONFI 3.0 specs for 400MT/s per chip.

OCZ made the mistake of using 25nm NAND on the SandForce SF-1200/1500 controller without optimization.
QFT
Even 3000 cycles for an average user is alot.
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post #9 of 25
Hmm well be getting an SSD soon, good to hear news like this.
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post #10 of 25
Quote:
Originally Posted by DuckieHo View Post
Slower speeds? NAND is getting faster. Current ONFI 2.2 specs for 200MT/s while ONFI 3.0 specs for 400MT/s per chip.
Does that exactly balance out the smaller number of channels that will be needed?
    
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