Some silence has been added to the desktop machine:
- A new CPU heatsink (Cooler Master Hyper 212 evo) with a slow-spinning 120mm fan
- A passively cooled Asus GT640-DCSL-2GD3 graphics-card (seems to work without problems in Ubuntu 13.04)
I had a GeForce 9800gt graphics card previously with good performance but bad power-consumption and noise. The new Nvidia GT640 card should be similar-ish in performance but much less power-hungry and completely silent.