The company claimed the X1 could perform 52 trillion floating-point operations per second (flops), more than double the speed of NEC's top-end system, the SX-7, which peaks at 18.1Tflops.
The X1 also outperforms NEC's specialised Earth Simulator supercomputer, which is rated at 35.9Gflops. These speeds are several thousand times faster than a desktop PC - an Apple Power Mac G4 desktop system with a dual 1.25GHz PowerPC G4 processor configuration is rated at just over 18Gflops, for example.
Typical applications for high-end supercomputers include weather simulations, automotive, aerospace, chemical and pharmaceutical industry applications, plus classified and unclassified government work.
The X1's processing core consists of four 800MHz 12.8Gflops proprietary Cray vector processors per node, with systems consisting of between two and 1,024 nodes.
Each processor comes with 16Gbytes of memory, giving a maximum memory of 66Tbytes. Shared memory connects processors within each node, and the nodes are connected in a three-dimensional network with 1.2Gbps I/O links. Pricing begins at $2.5m (£1.58m).
Cray also said it had accepted the "petaflop challenge", an attempt to build a machine capable of performing 1,000Tflops by 2010.
One initiative under way is building a $90m supercomputer called Red Storm, which will consist of over 10,000 Advanced Micro Devices' 64-bit Opteron processors.