I currently have a FreeNAS setup with an Intel Pentium G3250 (3.2 GHz), 16gb of ram, 6 drives in a raid-z2 configuration, and a 1 Gbps NIC. This configuration is able to saturate the 1 Gbps link and I have been very happy with the performance. However, I am considering going to encrypted drives and the G3250 doesn't have AES-NI hardware support. I am concerned the G3250 won't be powerful enough to do software encryption and still saturate the 1 Gbps link. Does anyone have any experience using encryption with a similar setup?