Here's the specs behind a small local server development box I am making:
Feel free to leave any comments/opinions on it, or even suggest improvements!
So far, my only initial thought was perhaps switching out the RAM to 2x4. That, and I have a bit of an overkill PSU (however the modularity and efficiency was my aim). However, I'll leave those considerations to other people.
The current SSD is somewhat a preferred choice due to quality/speed of it (good experiences with the drive in the past). I don't need to blow away money but something like a $50 difference for something that is going to be running for years likely won't make much difference to me.
Also, can't stand wires. Efficient and modular PSU's are a major plus in builds I work with.
I would just opt for a cheaper PSU. The cost savings of the improved efficiency will likely be negated by the significantly higher cost of the unit, especially since efficiency would be low anyway if the entire system is peaking at 100w load. Modularity really isn't that useful for a low-wattage unit either, since they don't include that many cables to begin with. For that kind of a system, I would recommend this unit instead (the labelling on PCPP is wrong, it's actually a bronze rated unit).\
i3 is more in the realm of development for Java and Ruby, and running server instances side-by-side while doing so. It also doesn't limit me in a future capacity if I decide to put more load onto the box.
As for the PSU, 450W is definitely higher than I need, but I can't find a simple, modular PSU that has low wattage. (It's a small case, so modularity is a big plus).