It is a little hard for us to do so since the M.2 devices came in 16GB and 32GB capacities. The U.2 Optane 900p comes in at 280GB only as of now not the multipl

It is a little hard for us to do so since the M.2 devices came in 16GB and 32GB capacities. The U.2 Optane 900p comes in at 280GB only as of now not the multiples of 400GB that many other drives came in. We actually had, for example, an 800GB S3700 tested but left that result out as it was essentially the same as the 400GB drive. On the full drive part, a several hundred GB SSD will almost always nearly "empty" in practice for this application. That is why you see 8GB and 16GB RAM based solutions (e.g. the venerable ZeusRAM.)