200W, mini-itx, what's the fastest system I can get?

Too bad, but I guess the fact that I could undervolt easily from 1.4 basic vid to 1.15 means already that the E version wouldn't offer much more, could probably go even lower as I remember my speedstep dropping as low as 0.8v, low speed tho but for movies, web browsing this is more than enough. And the temps never went above 38c and my case has next to no airflow.
 
Clamp is definitely capable of DC, intended for currents around 50A or so meaning accuracy won't be as good as using a multimeter. A lot easier though. Showed 1.2A for my pump which is about right, but can't get readings from the rest of the hardware yet since all the wires are sleeved, and the magnetic field around three 12V and five 0V wires isn't going to be terribly informative.

The pico is very high efficiency, 90ish or something daft, but you're right in that it doesn't include the efficiency of the mains ac to 12V conversion. Efficiency of the brick is somewhat variable, 75 to 90ish depending on which one you get. The pico is also rated in terms of output currents, so the nominally 150W pico needs a 180W brick to operate at full capacity. The DA-2 is around 83%. I'm concerned that the 12V will be excessively variable and lead to lower overclocks, but not sure there's anything to be done about this.
 
If you are after cheap high power AC to 12V bricks to power the pico PSU, I've found that the older XBOX 360 bricks are rated at a very precise 203W and are <£15 aftermarket. Needs a minor bit of fettling to get the 12V enabled (need to pull the enable pin up to switch it on), though. The bricks also supply +5 standby, so it is possible to bypass the locally generated pico PSU's one.

Later 360 bricks are 175W or 150W, so beware.
 
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