Question about CPU needed for FreeNAS build

I am thinking about building a freeNAS server, but I don't plan on installing Plex or any services on the server itself. I have a HTPC that has Plex server installed. The thought of going ZFS is nice.

I was looking at the following components for a freeNAS server:

Case: Fractal Design Node 304
Motherboard: ASRock E3C226D2I Mini ITX Server Motherboard LGA 1150
Processor: Intel G3258 3.2 GHz LGA1150 Boxed Processor
Ram: Crucial 16GB Kit (8GBx2) DDR3L 1600MT/s (PC3-12800) DR x8 ECC UDIMM...

Question about CPU needed for FreeNAS build