I work at a coffee house as a barista. But I mean that compared to what my dad spends on things he leaves on, my computer is hardly noticeable. It's energy efficient for the most part anyway. 
My Computer
- OS
- Windows 7 Ultimate 64-Bit (Build 7600)
- CPU
- Intel Q9550 2.83 GHz
- Motherboard
- ASUS P5E3 Premium
- Memory
- OCZ Platinum DDR3 1600
- Graphics Card(s)
- ATI Radeon 2400 HD
- Monitor(s) Displays
- Acer X221W
- PSU
- PC P&C 610W
- Case
- Antec 1200