I don't go out of my way to replace PC parts unless they brake or I think the PC is getting bit slow now - which is normally about 3-4 years after upgrading.
Parts I will spend a lot on:
GPU, CPU/MB, RAM
Other stuff like SSD I view as nice to haves. I'm not going to spend a stupid amount on fast storage when I can run W7 on a 20GB SSD and everything else on a standard 7200rpm
Oh and air cooled - had my Antec case for many years now. Its not quiet but it keeps the room warm in the winter
Parts I will spend a lot on:
GPU, CPU/MB, RAM
Other stuff like SSD I view as nice to haves. I'm not going to spend a stupid amount on fast storage when I can run W7 on a 20GB SSD and everything else on a standard 7200rpm
Oh and air cooled - had my Antec case for many years now. Its not quiet but it keeps the room warm in the winter
