Besides that I don't get why someone needs three 1GB-SSDs in a cracking-rig: if you you want to cluster 5 hosts and share the load, which software do you want to use with hashcat? hashtopus is a nice piece of software, but spending 30K and then rely on an free soft project you have to be some sort of a chancer.
The only reliable working alternative is hashstack, which is binded to Sagitta systems. Maybe you should get two of those instead of building rigs on your own, which does not seem to be your profession (otherwise you would not ask for advice here).
EDIT: You also need to tell us if these machines are supposed to run 24/7 or only on certain occasions. In case of the first latter, most of your hardware is not ready for that. You're building a gaming rig, nothing professional.
And the GPU you've chosen is also for gaming only. For your use, no matter what, it has to look like this:
![[Image: msi-gtx-980ti.png]](http://cdn.idealo.com/folder/Product/4779/6/4779619/s10_produktbild_mittelgross/msi-gtx-980ti.png)
The only reliable working alternative is hashstack, which is binded to Sagitta systems. Maybe you should get two of those instead of building rigs on your own, which does not seem to be your profession (otherwise you would not ask for advice here).
EDIT: You also need to tell us if these machines are supposed to run 24/7 or only on certain occasions. In case of the first latter, most of your hardware is not ready for that. You're building a gaming rig, nothing professional.
And the GPU you've chosen is also for gaming only. For your use, no matter what, it has to look like this: