My actual (2008-2019) rig based on a Q6600 with 6 GB of DDR2.
All pieces are 11 years old now (just to say that hardware can be durable sometimes) except the cooler I changed for convenience and the graphic card for silence (fanless) and convenience (no special requirement for this old model to work on FreeBSD).
Planned to upgrade it ASAP to a new build based on an i5 9400 as my biggest issue right now is that I haven't enough RAM