Last mini owned was a 2009 Core2Duo that I eventually upgraded to 4GB ram and a 64GB SSD. So, I anticipate the 2014 2.3Ghz 8GB model I just ordered to be a vastly significant upgrade. Later, I will most likely add either a SSD HD or PCIe flash drive. Maybe I won't get the five years of use I got out of the 2009 all things considered, but perhaps three years before wanting/needing to upgrade. Given the amazing resell value, and the daily workhorse the mini proved to be, I'm always impressed with the incredible value Macs offer. Considering limited trouble shooting and downtime, nothing compares to the TCO of Mac. I also understand that Mac was a closed system on purpose from the very beginning, upgradability has always been sort of schizophrenic for Apple, so my expectations are not high in this regard.