Z-RAM and MRAM

[Joshua]

Why does it take so long to finally market these technologies?

Someone knows the background where it fails?

Z-RAM needs like the SOI technology and is quite mature, how to AMD CPUs can see. And if AMD has the SOI technology for their CPU, why after using SOI technology will they not even order Z-RAM as cache in the CPUs to realize?

In multi-processor cores in the node design, where each of this own small cache should be so dynamited today. Z-RAM could be the area for the cache to shrink factor 6 or even the cache according to make bigger.

Z-RAM up to the D-RAM can be naturally replaced even take up also to the SOI technology have changed, but the CPU and GPU market would have all but already go.

And then we come to MRAM.
Why is the extinct and since 1990 it is still not much further?
Why is it exactly?

[SecRecy]

Z-RAM behaves like DRAM and is simply much slower than 6 - or 8-transistor SRAM.

The good thing is that it has Level 3 or Level 4 cache.

[Baltazar]

This is wrong!

Z-RAM works as similar, but the switching time is much higher, because the capacity is much lower.

There are Z-RAM cells with a switching time of 3 ns in conversation and there is also SRAM. And even if it would be slightly slower, it would still be faster than DDR Ram and is thus suitable for 2nd level cache.

Moreover, the tight integration with Z-RAM significantly higher than that of DDR RAM.