I own a BP655. Been running it for 3 years with moderate power draw, power supply is decent quality (can be noisy at 60% load or higher). I initially had heat problems when I added a video card, but I hole sawed out two 2" holes over the video card side of the case a week after I got the case - paired with a Sapphire Radeon 4650 LP. That card ran pretty cool under full load. (but failed on me a year later.)
I was running a Zotac G9300 w/ Celeron e3200 @ 3.16 ghz stock voltage. CPU temps reached max 62c full load, added a EVGA GeForce GT 430 running 75c 100% full load (I never allowed the fan to get higher than 70% with the software control, because it was noisy.) 75c was well within tolerance of the card and I ran that for about 2 years straight, not a single hiccup. The power supply still runs great.
All the hardware is in a box now.
I plopped in the A10-5700 and FM2A75M-ITX, the very next day it exploded. Major performance problems during that time .. especially whenever the thermal throttle would kick in (this was very obvious when it did - even for 2D apps and desktop software.) I didn't figure that this is what was occurring, I thought initially my powersupply with the BP655 was starting to fail - it was running full fan speed ALL the time (even in idle). No components other than the mainboard were damaged though, so that's great. The powersupply works as it did after the board exploded too, I had hooked up my old Celeron setup to test loads to see if there was any suspicious behaviour from the power supply. Ran fine under full loads.
What I don't get is this - The Celeron e3200 has a TDP of 65w. So does the A10-5700.
The e3200 - when paired with a video card - would spin the powersupply fan down to minimal noise under idle or watching movies 480 / 720 / 1080 / web browsing or otherwise light tasks.
Zotac generally has decent power efficiency in my experience with the 5 products I have purchased from them, never had a single one of their products fail on me, or otherwise generate excessive amounts of heat.
I didn't pair a video card with the A10-5700 / FM2A75M-ITX. At idle in windows, or light tasks, the powersupply would spin to 100% speed. While the processor itself was using no more than rated TDP, the board itself was a different story.
My postulation on this was that the efficiency of the power delivery into the processor was EXTREMELY poor. Less than 60%. So the actual power draw was more like 100w,
,which is probably what caused the VRM fire... just a guess, though.
You can rely on the BP655 to hold through whatever you throw at it. It's decent quality construction, included case fan is garbage so replace that (If you can). The case itself is a bit ugly when it's on, but you can easily fix that with custom modifications (if it annoys you .. The power LED is quite annoying ..)
If you plan to add Dual Graphics to your setup, definitely drill two circular holes in the side of the case - it needs ventilation for any card above 40w TDP.
EDIT : the powersupply included with my BP655 is a 200w TFX.Edited by Mildaine - 2/7/13 at 6:20pm