I have pollers running on 64 bit servers with 64g of memory. While the poller may only use 8g of memory it won't crash if there is more. Also even though SQL standard edition will only use 64g, the OS will use more than 64g if it is needed. We installed the original database server with OS standard which only accesses 32g of memory and hit the wall on memory utilization. So we upgraded the OS to enterprise so it could access more memory. Memory utilization then dropped from 95% to 9% and performance improved. So there is more to the memory issue on an SQL server than just SQL.
Having said all this, no one should be deploying a server that is bare minimum, that's a recipe for poor performance and ****** off users. I recognize that some of the stats I mentioned are way high, however, I don't have to go back to the well to get more hardware for quite some time. In other words future proof the install. Recognize that the specs the Solarwinds recommends are the minimum specs not the average specs.