So i don't get one thing. We're talking about crypto-mining, mining that can be done on GPUs or CPUs (mostly on GPUs).
Currently we're at 4TH and max was about 6TH. A 1080ti kicks out let's say 25MH/s. So that means we have had a maximum of 6.000.000 MH on RVN. Now divide that by 25 and you get 160.000 1080ti's for this coin. Of course not everyone will have only 1080ti's. 1060s cap out at 10MH, 1070s maybe at 14 and so on.
Still back to the 160K 1080ti's (aproximate theoretical calculation), you get let's say 20K miner with 8 1080ti's per miner.
All these number are getting ever lower and closer to what could actually be in the world. I don't think many people are mining on their own GPU or SLI GPUs and even is they are, these numbers i've pushed now are not indicative of ASICs. Don't know about FPGA but 12.000 of those would be enough to fill the network at 6TH.
Now comes the part of total hashpower spread. According to
https://ravencoin.network/stats, there is an unknown pool (don't know how this works with the unknown pools) that has 20% oh total hashpower (0.8 TH at the time of writing this, 1.2 at maximim 1,2 TH/s), Suprnova and another pool have 13% each, Beepool has another 9% and so on.
Now going back to splitting the total hashpower, Suprnova has ar this moment a reported hashrate of 2.8 TH spread to almost 15K workers. That is 186MH per worker. Taking into account my own rig and all these numbers, i'm pretty sure that ASICs don't run on this network and honestly i don't really think FPGAs exist also.
I know people will start trying to write-off these calculations. These are estimates, and as long as we don't have a clearer view and clear proof of them existing, i stand by my opinion that these doesn't exist.
P.S.: how much would an ASIC kick out by your own opinions? 1-2-3 GHs? do the math