Vulcan
The Vulcan is a not-so-mistereous government computer. It's cycles can be rented out. It is shared by the M&IC and the ASC. 1.5 out of its 5 petaflops are supporting NASA. It has the RHL OS for login and CNK OS for computing. Its processor clocks in at 3.7 GHz for login and 1.6 GHz during computing. It has 24,576 nodes with 64 cores per node, which totals in at 393,216 cores that have a total of 80 GB of memory each. The cores have a total storage of about 400 Terabytes.
Juqueen
Juqueen is a German supercomputer used for simulations, like weather. It is manufactured by IBM, has 458,752 cores and GB of memory, with a Linuix OS. Its processor clocks in at 1.6 GHz. (MORE DETAIL NEEDED)
Stampede
Stampede is a Dell-built supercomputer. It is in the U.S., and its 5.6 petaflops out of 10 are dedicated to research. It has 10 petaflops,which means it can do nearly 10,000,000,000,000,000 math operations per second. The base cluster has a peak performance of about 2 Petaflops and a peak performance of the co-processors of about 7 Petaflops. It has 6400 nodes, which are each like a powerful desktop PC. It has 522080 processing cores. It has a total memory of 270 terabytes and a 14 petabyte storage system.
Shaheen II
Shaheen II is the most powerful supercomputer in the Middle East, located in Saudi Arabia. It is used for research. It has a theoretical peak of 222 Teraflops. It has 16 racks of 1024 quad-core, 32-bit, 850 MHz compute nodes. It has a total of 65,536 compute cores. Each node has 4 GB of memory, so the entire computer has a total of 64 Terabytes.
Piz Daint
Piz Daint is a Swiss supercomputer. It is used for research, computing, and meteorology. It has 7.8 petaflops, so it could compute in one day more than a laptop can in 900 years. It has 5272 nodes, each of which have an octa-core processor, 64-bit CPU, an NVIDEA Tesla K20X with 6 GB of memory, and 32 GB of host memory. Theoretically, it can process 166.4 gigaflops with its CPU and 1311 gigaflops with its NVIDEA Tesla per node and a theoretical peak preformance of 7.787 petaflops. Each node has a memory bandwidth of 51.2 GB/s DDR3, which means it has a modern type of RAM and a "double data rate" of bandwidth, which has been used since 2007, and 250 GB/s non-ECC GDDR5, which is a graphics type DDR3. It has a total system memory of 169 terabytes of DDR3 and 32 terabytes of non-ECC GDDR5. It's peak bisection bandwidth is 33 terabytes per second and a system storage capacity of 2.5 petabytes. Its peak parallel file system performance is 138 GB/s
Mira
Mira is the third most powerful supercomputer in the US, but it is the greenest, with an output of 2176.58 megaflops per watt. It has 10 petaflops of processing power. In a day, it can do what would take an average PC 20 years to do. It is used for simulations and modeling. It has 786,432 processors and 768 terabytes of memory. It is 20 times faster than its predecessor, Intrepid. Any scientist with a question that requires a lot of processing power can submit a proposal for time using Mira. Mira has billions of hours of computing time every year. It uses a water cooling system. It fits more cores onto a single chip, so it speeds up the communication and reduces energy lost due to information traveling long distances. Water runs close to the cores,miso it skips a cooling step. It is five times as efficient and it is about as big as Intrepd.
K Computer
K Computer, located in Kobe, Japan, is used for research and simulation. It is used to solve energy, sustainability, healthcare, climate change, and industrial and space challenges. It has 88128 SPARC64 VIIIfx processors, a Linuix OS, and a speed of 10.51 petaflops. It is named after the word "kei", meaning 10 quadrillion. It is based on a distributed memory architecture. Its processors run at 2 GHz and and have 8 cores each, which means it has a total of over 640000 cores. It is contained in 864 cabinets containing 96 computing nodes, as well as 6 I/O nodes. Every node has 16 GB of memory. It has a water cooling system, which was made to minimize failure rate and power consumption. It uses 9.89 megawatts, but it is efficient, with 824.6 gigaflops per kilowatt.
Sequoia
US-based Sequoia is slightly odd in the fact that it doesn't use GPU Accelerators. Its manufacturer is IBM. It has 1572864 cores. It's best recorded performance is 171732 teraflops per second, with a theoretical peak at 20132.7 teraflops per second. It uses up 7890 kilowatts. It's processors run at 1.6 GHz with a custom interconnect. It has a Linuix OS.
Titan
Titan is the most powerful supercomputer in the US, with 17.59 petaflops. It is used for simulation and meteorology. It has 18688 compute nodes (NVIDEA Tesla K20 GPU Accelerators), with 299008 cores, 38 GB of memory per node, and a total system memory of 710 terabytes. It takes up 4352 square feet of floor space. It is the first major supercomputer to use both NVIDEA accelerators and AMD Opteron CPUs. It is about 10 times more powerful than its predecessor, Jaguar, even though it takes up about the same amount of space and power. It has a theoretical peak performance of 20 petaflops.
Tianhe-2
Tianhe-2, or Milky Way 2, has 33.86 petaflops of computing power. It is used for simulations, analysis, and security. It has 16000 nodes, with each one having two Intel Ivy Bridge Xenon processors and three Xenon Phi chips. It has a total of 3120000 cores. Each node possesses 88 GB of memory. The total memory is 1375 tebibytes.