That is, not green in color, understandably, but a device that does far less damage to the environment than similarly powerful supercomputers. The Japanese announced that their supercomputer would be ready soon, back in June. Shortly thereafter, Grape-DR was ranked number one on the Little Green500 List, which is published monthly. By the way, the Japanese supercomputer’s energy efficiency is 815.4 megaflop/W, a 5% improvement over the previous leader, IBM’s system with energy efficiency of 773.38 megaflop/W. Thus, Grape-DR rightfully takes the first place in the "green" list of super systems.
The Japanese have managed to develop a gas pedal chip that can significantly reduce power consumption. Without the chip, the computer would consume 150 megaflop/W, so the chip can improve system performance by more than five times.
By the way, Grape-DR has 64 pairs of Intel Core i7-920 processors, plus four gas pedal chips. To evaluate performance, the researchers worked with the Linpack test, which is used to test supercomputers from the Top500 Rankings. The Japanese supercomputer, according to the developers, will be used exclusively for astronomy, science and engineering computing needs.
Of course, the fact that supercomputers are "going green" cannot help but rejoice, however, it is clear that they are not the leaders in environmental pollution among computing devices. Much more damage to the environment are caused by ordinary PCs and laptops. In addition to power consumption, there are other indicators of "environmental friendliness" of the computer, but still the main emphasis now put on power consumption. Probably the creation of such a computer has done more harm than the harm that this super-computer will do over its lifetime. I once heard that the smaller the computer (laptop, netbook, portable PC), the more damage to the environment its production causes. I don’t know how much of this information is true.
Nevertheless, in today’s computer industry there are already positive shifts into the "green" field, large and small corporations have long been working to improve and line production, trying to save energy and use still not so and harmful materials for production (everything is relative, of course). Even Chinese companies that have never been "green" are beginning to position some "green" products, such as motherboards with reduced power consumption that use recycled materials to produce them.
Here’s the English-language one primary source if you’re interested