Up front capital invested can range from as low as $500 for a small, shallow pond aeration system to as much as $8,000 or more for a larger system or a solar aerator.Operating cost is dependent on the number of amps needed to power an electric motor multiplied by the electricity cost in your area.ome electric aerators might run for 2-3 years without any major issues and others might run 5-7 years or longer. The table below is based on a set of assumptions that is fairly representative of actual costs for a 1 to 2 acre pond or small lake.
The Surface Hub is available in two sizes. The first measures 55 inches and is designed for huddle spaces, smaller conference rooms, and offices. Its cost is set at $6,999 (USD). For larger meeting spaces, there's an 84-inch model that costs $19,999. These prices are not unreasonable when compared to what Polycom and other companies charge for their conference room solutions.
Finally, RPis are cheap! The RPi platform has to be one of the cheapest ways to create a cluster of 32 nodes. The cost for an RPi with an 8GB SD card is ~$45. For comparison, each node in the Onyx cluster was somewhere between $1,000 and $1,500.So, for near the price of one PC-based node, we can create a 32 node Raspberry Pi cluster!.his modest, by supercomputer standards, currently has 32 nodes, each of which has a 3.1GHz Intel Xeon E3-1225 quad-core processor and 8GBs of RAM. A Beowulf cluster is simply a collection of inexpensive commercial off the shelf (COTS) computers networked together running Linux and parallel processing software.