PlayStation 3 cluster provided high-performance computing for reasonable price. One example was Condor Cluster (a US Air Force supercomputer built out of 1,760 Sony PlayStation 3s running the Linux operating system, the 33rd largest supercomputer in the world at that time).
However this declined since Sony's OS update in 2010 which disabled ability to run other operating systems such as direct installation of Linux.
Are there any alternative video game consoles which can be used for clustered computing which you can recommend? With reasonable compute power vs price ratio.