On 01/16/2013 10:20 AM, Hearns, John wrote: > http://www.theregister.co.uk/2013/01/16/amd_roadrunner_open_compute_motherboard/
The pictured 1U has what looks like 12 15k RPM fans (not including the power supplies). Or 6 double fans if you prefer. In my experience those fans burn an impressive amount of power (40-60 watts), make an impressive amount of noise, and introduce substantial vibration into the chassis. That might be worth it, but they don't actually move much air. I'd much rather have a quad node 2U chassis (with 2U fans). When compared to the picture 1U you get: * 1/4th the power cables per node * less chassis per node * efficient fans/airflow * better power efficiency * a price that's often less than the four 1 U nodes. _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
