I could be way off here but this slide could be a key to...

I could be way off here but this slide could be a key to figuring out what kinds of speeds we're getting in the context of current memory generations. I know that it's been referred to as "DRAM like speed", but due to the NDA shroud of secrecy I believe that we've previously all been unsure what that means exactly. Does that mean that means faster and DRAM, or a bit slower, and is that DDR1, or DDR2 etc etc.

This video is vintage (2014) and we know that they've achieved the "best speeds to date" with some of the most recent wafer lots. But if we use the speeds indicated in this slide as a base case, would anyone with more knowledge about hardware care to comment on the speeds as described here? @hashtagyolo I'm looking at you big fella.

I may be completely wrong, but the speeds in nanoseconds are also also provided with Megahertz pair comparison in that slide table. For the slide in question DRAM is described as "50 / 50". Therefore my assumption is that that's 50 nanoseconds at 50 Megahertz. The 4DS has three values (not sure what the 3rd is) and it states that it's "10 / 10 / 10". Again, my assumption is that it's 10nanoseconds at 10Megahertz.

I found this comparison table here comparing the relationship with speed in nanoseconds with megahertz values. If my assumptions are correct does this mean that the following is true?

4DS speeds - extrapolated 50MHz speed using provided speed at 10MHz

	Clock speed	Cycle time
1	10MHz	10ns (as per slide - 1/10th of comparison speed in table)
2	50MHz	2ns (1/10th comparison speed from table)

This reads to me like they are trying to indicate in the slide that 4DS reRam is 10 times faster than their 2014 comparison to DRAM? DRAM has come a long way since then but if true then this is still a compelling piece of information.

comparison table here (excluding my comments)

Table 6.2. The Relationship Between Megahertz (MHz) and Cycle Times inNanoseconds (ns)

	Clock Speed	Cycle Time
1	4.77MHz	210ns
2	6MHz	167ns
3	8MHz	125ns
4	10MHz	100ns. (4DS states a speed of 10ms at 10 MHz for ReRam)
5	12MHz	83ns
6	16MHz	63ns
7	20MHz	50ns
8	25MHz	40ns
9	33MHz	30ns
10	40MHz	25ns
11	50MHz	20ns. (4DS states a comparison of 50ns at 50Mhz for DRAM)
12	60MHz	17ns
13	66MHz	15ns
14	75MHz	13ns
15	80MHz	13ns
16	100MHz	10ns