So, about 2ms of use? That lifetime seems like this is far from practical as a replacement for SRAM.
Can it be used as FPGA config RAM? Also, maybe for faster SSDs?
My guess is they are thinking of it more as a replacement for dram or disk. I didn't read far enough to learn if it failed after all those cycles or just "we stopped testing it". Either way it sounds promising.
I think they mean write-read cycles.
Would it be lower power than DRAM?
Yes!
If it's low power you can stack it higher without worrying so much about it melting. This might make a great high capacity cache.
The cycles are programming cycles, not clock cycles. Their stability measurement was 60,000 seconds.