I'm currently running a hitachi Hts547564A9E384 with SATA/300 5400RPM 8MB buffer and an average latency of 5.5 ms as my main and only memory storage in my newest rig. My motherboard is a MSI 970 Gaming, I'm running a AMD R9 380 4GB graphics card, 16 GB Ram across 4 4GB sticks, and my cpu is an AMD FX 4350 quad core 4.2GHz. Should I invest in changing my SSD out or getting a secondary HDD? Or will there be little to no change regarding performance and disk transfer rate?