Jim,
I am a big fan of the Xeon-D but they take 45Watts for the CPU alone. Full
featured Xeon and two 10gig ports on board though.
I would be looking at one of the Nvidia boards intended for in-car systems.
________________________________
From: Beowulf [beowulf-boun...@beowulf.org] on behalf of Lux, Jim (337C)
[james.p....@jpl.nasa.gov]
Sent: 19 January 2017 14:36
To: beowulf@beowulf.org
Subject: [Beowulf] Mobos for portable use
This comes up every few years..
Someone at work was complaining at lunch that the latest laptops have nice
screens but don’t have much memory, largely because they want to keep the
battery size reasonable ("thin is in”).. my suggestion was “well, why don’t you
just use your laptop as the user interface to a bigger more powerful compute
node/nodes”
That devolved into a “but what I really want is the horsepower of my desktop
machine”..
Leaving aside the “use the network to connect to a CPU somewhere else”
We then started discussing whether anyone makes motherboards with high
performance processors, lots of RAM, maybe a GPU for computation (but no
display hooked up), but none of the other stuff, and then run off batteries..
Like a battery powered Intel NUC, but with way more horsepower
The top of the line NUC seems to have a 19V, 65W power supply.. arstechnica
says they burn about 50W running full out. Let’s say you want to run for 4
hours, so you need 200 Whr.
A 18650 Li battery is 3.4 Ah @ 3.6V, that’s about 23 Wh, so you’d need 9 of
them. That’s not all that big a package.. Arranged in a row, they’d be 65mm by
162 mm..
Prismatic (brick shaped) batteries are 350 Wh/Liter, 135Wh/kg.. so 200 Wh is
going to be about half a liter (50x100x100 mm) and 1.5 kg
James Lux, P.E.
Task Manager, DHFR Space Testbed
Jet Propulsion Laboratory
4800 Oak Grove Drive, MS 161-213
Pasadena CA 91109
+1(818)354-2075
+1(818)395-2714 (cell)
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