Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
resistion
User Rank
CEO
Not practical
resistion   4/22/2014 5:49:07 PM
NO RATINGS
STT MRAM too expensive to replace DRAM. Also, read disturb has not been resolved to the degree needed for frequent accesses.

tb100
User Rank
CEO
Re: In the future, why both?
tb100   4/22/2014 5:05:18 PM
NO RATINGS
I've never understood the positioning of these new persistent memory technologies as a replacement for RAM. Isn't it good enough that they are a replacement for Flash? By saying that they can replace RAM, you are setting up a good technology for failure.

Here's why: RAM has to have infinite read/write capability. Not millions, not even billions, but infinite. RAM can be written to very quickly. If it has a 100ns cycle, then you can write 100 million times in 10 seconds. Writing to one location may not be something that is done often, but all it takes is one time, (maybe some weird encryption, compression, or even Bitcoin algorithm that reuses one memory block over and over again), and the memory is dead in the water.

Let's set the goal post a little lower so these memories have a chance.

 

edit add: did some searching, and one MRAM company, Everspin, claims no wear-out mechanism, or infinite read/write capability, so I guess at least MRAM can replace RAM.

 

C VanDorne
User Rank
CEO
In the future, why both?
C VanDorne   4/22/2014 3:05:27 PM
NO RATINGS
"Meanwhile MRAM and STT MRAM will start to replace SRAM and DRAM within the next few years and probably before RRAM replaces flash memory."

Why would I need both?  That is if DRAM/SRAM's replacement is persistant why would a CPU system have any need of other persistent storage, i.e Flash's future substitute?  Or conversely, if Flash's future substitutes has DRAM-quick write speeds why would a CPU have any need of DRAM's future substitute?  It seems like the future merges the two functions by solving the technical challenges that led to them being seperate in ther first place.

<<   <   Page 2 / 2


EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Aging Brass: Cow Poop vs. Horse Doo-Doo
Max Maxfield
33 comments
As you may recall, one of the things I want to do with the brass panels I'm using in my Inamorata Prognostication Engine is to make them look really old. Since everything is being mounted ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
11 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
11 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
45 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)