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Crossbar Resistive RAM stores a terabyte on a chip

venturebeat.com

11–20 of 79 posts

Re: Crossbar Resistive RAM stores a terabyte on a chip

#11
Crossbar believes it can write data to its chip at 140 megabytes per second, compared to 7 megabytes a second for flash. Read performance is 17 megabytes per second, with a random read latency of 30 nanoseconds.

The write performance sounds good, but the read performance seems very low. Also I don't know where they get 7 megs per second for flash. Sounds like the picked the worst performer to compare to.

I'd be more impressed if they had something on the market.

Re: Crossbar Resistive RAM stores a terabyte on a chip

#12
post #9

Earlier quoted context omitted.

They haven't mentioned the price or may be I missed it. That may be the important factor.

They also don't compare the read speed (17 MB/s) to existing flash memory. They showcase an amazing write speed, but most applications access data a lot more frequently than they create it.

[deleted]

Re: Crossbar Resistive RAM stores a terabyte on a chip

#13
post #9

Earlier quoted context omitted.

They haven't mentioned the price or may be I missed it. That may be the important factor.

They also don't compare the read speed (17 MB/s) to existing flash memory. They showcase an amazing write speed, but most applications access data a lot more frequently than they create it.

[deleted]

Re: Crossbar Resistive RAM stores a terabyte on a chip

#14
This article makes a lot of extraordinary claims. Extraordinary claims require extraordinary evidence.

In this case, that means a reputable tech reporter from a reputable publication has to say "this is the real deal" before these guys can be taken seriously.

(I'm not doubting that they have any tech, it's just that they seem to be promising something with no downsides, which in most cases means a marketing team has spun out of control.)

Re: Crossbar Resistive RAM stores a terabyte on a chip

#16
post #10

I remember memristers were supposed to do something like this. Anyone have an idea if this is related or unrelated. http://en.wikipedia.org/wiki/Memristor

As I understand it, one of the (more interesting) characteristics of memristors is that they can do computation. They don't mention anything like that here, so I doubt it.

Memristor do no computation at all. It follows the same idea as the described RRAM. High density, low cost, persistent, low power consumption, high write/read throughput, low latency. To the exception that it could even replace RAM, not only nand devices. I don't remember of the top of my head reading performance but it was clearly closer to RAM levels.

Re: Crossbar Resistive RAM stores a terabyte on a chip

#17
post #14

This article makes a lot of extraordinary claims. Extraordinary claims require extraordinary evidence. In this case, that means a reputable tech reporter from a reputable publication has to say "this is the real deal" before these guys can be taken seriously. (I'm not doubting that they have any tech, it's just that they seem to be promising something with no downsides, which in most cases means a marketing team has…

This is a very competitive and huge market. Lot of companies running to obtain the next disruptive tehcnology/product. No one is really ahead of the others for now. So I guess it will be difficult to have any good tech reports without any marketing touch in it :)

Re: Crossbar Resistive RAM stores a terabyte on a chip

#19

Crossbar believes it can write data to its chip at 140 megabytes per second, compared to 7 megabytes a second for flash. Read performance is 17 megabytes per second, with a random read latency of 30 nanoseconds. The write performance sounds good, but the read performance seems very low. Also I don't know where they get 7 megs per second for flash. Sounds like the picked the worst performer to compare to. I'd be more…

The numbers are fairly suspicious, they don't reference the density of the flash they are benchmarking or if they are behind controllers.

Flash chips are generally multiplexed and behind a smart controller that compresses and and caches data, which can greatly effect the throughput numbers.

Re: Crossbar Resistive RAM stores a terabyte on a chip

#20
post #14

This article makes a lot of extraordinary claims. Extraordinary claims require extraordinary evidence. In this case, that means a reputable tech reporter from a reputable publication has to say "this is the real deal" before these guys can be taken seriously. (I'm not doubting that they have any tech, it's just that they seem to be promising something with no downsides, which in most cases means a marketing team has…

"This article makes a lot of extraordinary claims. Extraordinary claims require extraordinary evidence."

Does it? It just sounds like a normal memristor to me.

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