Many folks on this thread, including myself, are looking for a mini-ITX case that can fit this MB and also provide adequate cooling. With that in mind, I wanted to get more information about HSFs. For the stock Intel HSF, Intel recommends at least 81.3mm (3.2in) of space between the MB surface and anything above that could prevent air flow, what Intel calls the Boxed Processor Fan Heatsink Airspace Keepout Requirements. You can see this in figure 27 of section 7.4.1, Boxed Processor Cooling Requirements, on page 98 of this document:http://download.intel.com/design/pro...hts/318732.pdf
Some cases put the ODD directly above the MB. This means that the case height, minus the height of the ODD, minus the height of the MB above the bottom of the case, must be at least 81.3mm. For example, the LG GGC-H20L ODD is 41.3mm high. If the MB is 10mm above the bottom, the *internal*
case height must be at least 10+81.3+41.3=132.6mm (5.2in). Since the ODD is unlikely to fit flush with the top of the case, adding an extra fudge factor means a minimum *internal*
case height of ~140mm/~5.5in or so.
So this definitely rules out cases like the APEX MI series (5.1"), APEX MW serives (2.8"), or the in-win BM series (112mm) for a configuration with an ODD (even if we assume these are *internal*
heights, which I suspect they are not). However, if a smaller HSF has the same "cooling" ability as the stock Intel HSF, then these cases might work.
Other cases put the ODD next to the MB. This means the *internal*
case height, minus the height of the MB above the bottom of the case, must be at least 81.3mm. For example, the Silverstone LC05 (55mm), LC09 (55mm), and LC19 (68mm) are like this. Again none of these cases would work unless you can get a smaller HSF with the same "cooling" ability as the stock Intel HSF.
All the above assumes that the case can maintain an ambient temperature of 38c or below inside the case, using its own cooling system or whatever.
If anyone thinks these calculations are incorrect, please let me know.
I have not yet found "Airspace Keepout Requirements" for other HSFs. I will keep looking and post anything I find here.