The computing revolution of the 1970`s with the introduction of the microprocessor chip and the resulting miniaturisation of circuitry has given us a new age in computer technology, but we are still held back by limits imposed by the heat generated by circuitry that is packed very tightly together and therefore generates a lot of heat. If we could find a way to create a room temperature superconductor, this would mean that it would not get hot, and a wire could carry a little more current without getting hot. This would result in caps sitting on the motherboard with no fan or heavy heatsink. This would mean a super powered gaming PC, with a Nvidia superconducting GPU and CPU would not need cooling at all. Companies making cooling systems for computers would go out of business. A CPU could have even more cores on it and still work fine. Superconducting underground power cables would not get hot and could carry far more current. This would also mean that all power transmission lines could be underground, and carry far higher voltages, with no loss over distance. Conventional power cables suffer current losses to electrical resistance. If this was a thing of the past, then power might be cheaper.
At the moment in Australia, it is quite expensive, and prone to black outs in the summer due to the heat and the demand on power due to poorly constructed homes that rely on Air Conditioning to provide a comfortable climate in the summer months. Construction of houses with big verandahs and large attics with ventilation would offer better protection from the summer heat. But builders in this country are clueless and just build off the same recycled plans. But getting back to computers, we also need better and more reliable storage technology. Old magnetic drives can fail, and an SSD may not be the most reliable either. There needs to be a large capacity archival storage technology that can allow us to store large amounts of photos and multimedia with the assurance that it is safe in the long term. Since no one uses photo albums anymore, it is all online, there must be the security of data preservation. That is what people expect when using services like Facebook or Flickr to store their photo collection.
The speed of a superconducting CPU would not be that much higher than that of a conventional CPU, but not requiring cooling would be good if there even is a material that can be superconducting at room temperature. Hopefully something will appear some time off in the future. Eventually we might see a 128 bit CPU, but that is a long way off yet.