Comments on: Fan upgrade at ORNL will save $150,000 a year http://insidehpc.com/2010/02/10/fan-upgrade-at-ornl-will-save-150000-a-year/ HPC News Without the Noise for Supercomputing Professionals | insideHPC Sun, 19 May 2013 10:46:54 +0000 hourly 1 http://wordpress.org/?v=3.1.1 By: John West http://insidehpc.com/2010/02/10/fan-upgrade-at-ornl-will-save-150000-a-year/#comment-207299 John West Wed, 10 Feb 2010 19:23:34 +0000 http://insidehpc.com/?p=9938#comment-207299 Paul, that's 0.3:1, as in better than 0.8:1. Paul, that’s 0.3:1, as in better than 0.8:1.

]]> By: Paul Adams http://insidehpc.com/2010/02/10/fan-upgrade-at-ornl-will-save-150000-a-year/#comment-207270 Paul Adams Wed, 10 Feb 2010 16:27:32 +0000 http://insidehpc.com/?p=9938#comment-207270 "Whereas most centers use 0.8 watts of power for cooling per every watt of power used for computing, ORNL enjoys a far more efficient ratio of 0.3 to 1" Is that quote correct? That is a large range. It includes 0.3 watts of cooling which is better than the 0.8 watts of cooling they are comparing with, but it also includes 1.0 watt of cooling which is worse than the 0.8 watts of cooling they are comparing with. Since it includes both ends of the spectrum - both better and worse values, it makes the quote meaningless. “Whereas most centers use 0.8 watts of power for cooling per every watt of power used for computing, ORNL enjoys a far more efficient ratio of 0.3 to 1″

Is that quote correct? That is a large range. It includes 0.3 watts of cooling which is better than the 0.8 watts of cooling they are comparing with, but it also includes 1.0 watt of cooling which is worse than the 0.8 watts of cooling they are comparing with. Since it includes both ends of the spectrum – both better and worse values, it makes the quote meaningless.

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