John R Pierce wrote: > On 9/16/2014 1:39 PM, m.roth at 5-cent.us wrote: >> No, I cannot "do the experiment". I've got to get these racked and up >> and >> running, for my users to use. They're not my toys.... > > then call the vendor(s). ask their advice... > > now... if this is a rack mount Dell PowerEdge server, and a > server-oriented RAID card, the airflow is NOT convective heat rising, > its massive forced air from the front of the chassis to the rear. so > orientation and whatever is not very important, lots of air will be > forced past the heatsinks. > Thanks. I was thinking that, except for the fact that it's a 1U, and so the gap between the heat sink on the m/b and the bottom of the card is not exactly large. mark