SSD caching (Intel Smart Response) is an Intel-specific technology. I could be wrong, but I am not aware of an AMD version of the technology. SSD caching pairs a small (~32 GB) SSD with a mechanical HDD to speed up data access.
The good news is that it is superfluous and unneeded if you use an SSD as your primary boot drive, as marrying a smaller SSD to it would see negligible gains (if any).
For $68, you can get 8GB of DDR3 1866: »
www.newegg.com/Product/P ··· 866C10DCI would also recommend the AMD 760K CPU for $10 more, you get a 400 mhz boost in clock speed (and is the newer Richland vs. older Trinity): »
www.newegg.com/Product/P ··· D%20760k