btw, worth noting is those DIMM's came out of a Sun T5140 server (1U server) when we upgraded to higher density memory, considering that it's a 1U server they came from they didnt exactly need a ton of airflow to stay within range. A low volume 80mm fan should be plenty, or whatever you happen to have laying around for that matter 
looking good man, keep us posted!
looking good man, keep us posted!