Message boards :
Number crunching :
Cost of acquisition + performance per W for newer single board computers vs. desktop and dedicated GPUs.
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NON Send message Joined: 22 May 99 Posts: 4 Credit: 4,019,968 RAC: 0 |
Apologies if this has been covered before recently but the last through comparison I found was for the now severely aging RPi3 and 3-4 year old GPUs/CiSCs. Has anyone done a cost vs. performance analysis of any of the more recent 8 core, 64 bit arm SBCs vs current GPUs/CISC setups? Compared to a Raspberry Pi 3 the newer generation of SBC's seem to get about %240 the performance with the same upfront cost ($35ish) but with a 2-3W higher power consumption (about 25% increase on average compared to my Rpi3's) |
spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
Link examples of these newer SBCs. |
NON Send message Joined: 22 May 99 Posts: 4 Credit: 4,019,968 RAC: 0 |
I totally missed that I got a reply to this post for a good month :) The most direct comparison to the Rpi3 that conforms to the stats I posted is the Nanopi Fire 3, http://nanopi.io/nanopi-Fire3.html .Same price, double the cores working roughly 20% faster per core on my systems. Then there's the Odroid Xu4 http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143452239825 which is $60 but has 4 cores working at near 210% the speed of a RPI3 core and the remaining 4 working at the aforementioned 120% improvement for about the same gain per dollar. Then you have what seems about a million boards going for 20$ using the same A53 cores as the Rpi3 but clocked higher. |
David Anderson (not *that* DA) Send message Joined: 5 Dec 09 Posts: 215 Credit: 74,008,558 RAC: 74 |
Just a single datapoint here. I thought the sbc concept was interesting. (Not using rasbperry pi for seti: have a couple doing record-keeping/control though). I acquired an odroid-xu4 (16GiB eMMC disk, 4 core,2GiB ram, 2GhZ clock) and finished the setup a day or so ago. Preliminary results suggest that it will accumulate about 700-900 cobblestones per day total across the 4 cores. One built-in 40mm fan cooling the cpu. Preliminary results indicate that Ubuntu-Mate 16.04 sees the 4 cores as 8 (some threading bios setting) but (again, preliminary) it appears that running more than 4 seti threads is not helpful. A single core takes about 8 hours for each current task it gets. Power use is under 40 watts at 5V. I had been running an old HP laptop (68 watts, 1 AMD core) as an experiment (it took 4-5 hours per task) but it was big/heavy at 17-inches and its screen and keyboard were failing so I've junked it. |
David Anderson (not *that* DA) Send message Joined: 5 Dec 09 Posts: 215 Credit: 74,008,558 RAC: 74 |
I decided that I should measure power instead of just quoting the max power the ac-dc converter can deliver. Running seti (four tasks) its power use bounces around between 11W and 12.x watts. I'll call it 12W. |
David Anderson (not *that* DA) Send message Joined: 5 Dec 09 Posts: 215 Credit: 74,008,558 RAC: 74 |
I'm measuring the (12 W) power use at the wall plug with a Brand Electronics Digital Power Meter. |
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