I'm considering to build my own mini itx system for a small and very efficient windows 7 server, based on the passively cooled Asus E35M1-I DELUXE. I want this system to be as power efficient as is possible.
The setup I have in mind will be according to the following criteria:
- no optical drive, no keyboard mouse display
- system will be in the metering cupboard, so no audio or video connections needed to TV etc
- just user ethernet, no wifi
- Operating system running on a usb stick
- 2GB memory, low voltage for power reasons
- two 2.5" hdd's in raid 0 for large storage, that spin down when not used (made possible by doing OS on USB stick)
- ideally fully passively cooled yet small
The question I have:
- what is the realistic minimal power usage of such system (idle cpu with the two harddisks spinned down), as I read on some forums that 30 watt is drawn in idle mode from the Asus system (this would be way too high in my opinion, below 10 watt should be easily possible)?
- what is the most efficient power supply that you recommend? I could considering an enclose with built in PSU (e.g. Antec ISK100 which comes with a 95 watt PSU) or a PicoPSU (they are very small, but are they really worth getting if space is not a big issue?
- what enclosure do you recommend? Looks not important, functionality is.
Any thoughts highly appreciated!
I've been looking at the latest Fusion Based motherboards and been thinking of doing something similar to what you have mentioned.
I personally would look at getting a standard PSU over the Pico, just as its better value for money and also has a better efficiency rating than the Pico. In the majority of cases anyway.
Another option to an SSD is to use a CF card which would be better than a USB stick imo.
Also RAID 0 won't give you a great performance boost as bodger mentioned having a JBOD or if you can spare the loss in space RAID 1 would be better. RAID 5 would give the best of both worlds regarding redundancy and performance.