It is essentially the same as the PC Chips M789CG except for color scheme (I actually bought a PC Chips board first and used it for another project
). The heatsink is stuck to the CPU with double-sided adhesive thermal tape, and I suspect removing it before powering it up will be easier (before the glue melts). The board actually only measure 17x23cm (even though website states 19x23cm), so it's only 5 cm wider than mini-ITX.
The C3 CPU has been compared to a Pentium III - 500mhz in terms of performance, but for non-processor intensive tasks it's acutally not too bad. Windows XP actually booted up quite quickly with this board. The CPU supposedly consumes a typical 5W and has a TDP of 8.5W, so it shouldn't be too hard to cool, maybe I got such high temps because I tested in a small room with little airflow and a 29C ambient. I suspect the board temp readings should not be too far off as the Zalman heatsink was quite hot to the touch when running fanless.
As for image quality at 1600x1200, I haven't spent extensive time with this system yet, but it looks fine. Web browsing refresh is a little slow (switching between browser windows) but I suspect that has more to do with Puppy Linux or the Sea Monkey browser.