[rescue] SET at home servers

Patrick Finnegan pat at computer-refuge.org
Thu Dec 18 14:21:35 CST 2014

I really doubt your 1U server is drawing 400W of power continuously, unless
you've put a couple of video cards or a Xeon Phi into it, or are really
stressing it pretty continuously.  A 2 proc Xeon E5 1U system from work
draws around 375W max load, and about 110W at idle.  Older 1U dual-proc
Xeon/Opteron systems (Circa 2008-2009) that we have idled around 200W, and
maxed out at 333W.

Note that "max load" means you're doing some well-optimized floating point
math on them, eg the HPL benchmark. Integer loads and I/O don't stress the
CPUs very much.


On Thu, Dec 18, 2014 at 2:55 PM, Lionel Peterson <lionel4287 at gmail.com>
> I can colo a 1U box (400 watts) with some seemingly reasonable amount of
> bandwidth for 7 cents/hr. ($50/mo) I don't think home electricity is any
> cheaper than that, is it?
> Answered my own question - the U.S. Average is about 12 cents/KWh (from
> 2011):
> http://www.npr.org/blogs/money/2011/10/27/141766341/the-price-of-electricity-
> in-your-state
> Lionel
> > On Dec 18, 2014, at 12:18 PM, John Floren <john at jfloren.net> wrote:
> >
> > I've always been pleasantly surprised at how cheap it is to keep
> > computers running 24/7, although the closest I came to one of these
> > was a 1U Sun box I had for a while back in college.
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