Efficient board with small design flaws - good for office applications

I currently have two boards from this series run as thrifty computer for Office, Internet and Email, which are each equipped with 4 GB RAM and an SSD. In these facilities (with 300 watts of power supplies BeQuiet) are the computer practically inaudible (silent fan noise of the power supplies) and quickly called sufficient for the applications; Applications and Windows 7 quickly start (boot time Windows 7 less than 10 seconds), the network performance (copying large files on Windows shares) since the last firmware update with 60-90 MB / s normal, before the network speed was unacceptably low. The CPU has in the Windows System Assessment 6.4 Consumption is in idle mode at 14 watts and under normal load at max. 17 Watt - very good values. With a PICO PSU, so completely fanless, which consumption in standby is only 10.9 watts, which is only slightly more than the standby power consumption of (quite Hohen-) 3 Watt.

Only with power-hungry applications (compress, unpack, video decoding), the CPU reaches its limits and is significantly slower than similar fast processors from AMD or Intel. By comparison, I have a computer with AMD Phenom II X2 550 with 3.1 Ghz with also 6.4 points in the Win7 system assessment, but felt for unpacking files takes only half the time. For swallows such a computer but operating loosely 60-70 watts; a switch worthwhile even at the high cost of electricity and longer operating times. I would say that the CPU for 90% of all normal office applications is fully sufficient.

Very annoying but are mistakes in bios (currently 1.20) and chipset: When Task Switch (by an active window to the next application), the computer sometimes swallows and freezes for a few seconds. Very annoying in the office operation. Properly corrosive is the faulty design of all ACPI functions: On a computer Wake worked on USB keyboard not first. I had to explicitly set to Enabled USB Legacy function in the BIOS. Both computers monitored constantly and uncontrollably -kontrollierbar once WOL or Resume / Wakeup events are activated in any way. Even the selective disconnection of individual ACPI functions (WOL, timer events, USB, etc.) did not help. Only when I disabled all ACPI functions except USB keyboard, was finally quiet. Now restart the computer only by pressing the power button or keyboard - annoying in larger networks. I'm hoping for a BIOS upgrade, which also improves the task changes. An unrivaled effective and energy-efficient design is validated here by unpleasant teething. The largely baugliche Board ASRock Q1900B-ITX motherboard socket (micro-ATX, 2x DDR3 memory, 3x USB 2.0) with additional front USB is more stable and is preferable. From a server application I'd foreseen at present because of the streaky network performance and the enigmatic problems in task switching more. Here, the Board would be ideal for a small NAS or server.