picoPSU-120-WI-25 (max 80W continous load on the 12V rail)
mainboard: ASRock Q1900M (with Intel Celeron J1900)
RAM: 2* Corsair Vengeance 1600MHz 4GB DDR3
HDD: Toshiba PX3006E-1HL0 HDD 2TB SATA2
(+ the usual HID devices)
As candidates, i'm considering:
- Radeon HD 7750 1GB (power consumption too high?)
- Radeon HD 6450 / Radeon R5 230
- NVIDIA GeForce GT 710
- NVIDIA GeForce GT 720
- NVIDIA GeForce GT 730 GDDR5 (best fitting choice?)
EDIT: i've found some good tips here.