RAM mining?

[tromp]

there is an algo that is incredibly RAM intensive

There is indeed. It's called Cuckoo Cycle

https://github.com/tromp/cuckoo

Whereas Equihash (as parametrized in Zcash) uses 200 bits of memory to store a hash,
Cuckoo Cycle doesn't store hashes explicitly, but maintains 1 bit for each pair of hashes.
Where Equihash solves problems of size a few million with a few hundred MB, Cuckoo Cycle
can tackle problems of size a few *billion* with the same memory thanks to a vastly
more intensive use of memory.

https://www.internetsociety.org/sites/default/files/blogs-media/equihash-asymmetric-proof-of-work-based-generalized-birthday-problem.pdf

"Our solution is practical and ready to deploy: a reference implementation of a proof-of-work requiring 700 MB of RAM runs in 30 seconds on a 1.8 GHz CPU, increases the computations by the factor of 1000 if memory is halved, and presents a proof of just 120 bytes long."

The reference implementation has been broken by

https://forum.z.cash/t/breaking-equihash-in-solutions-per-gb-second/1995

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[startselect]

Ram has no processing power. Unless you're talking about coins that requires you to hold content. You could create a ramdisk and set a part of your ram as disk space. But why bother, might as well use your hard drive which will hold a lot more content.