Intel Xeon Phi coprocessors are PCI Express form factor add-in cards that work synergistically with Intel Xeon processors to enable dramatic performance gains for highly parallel code - up to 1.2 double-precision teraFLOPS (floating point operations per second) per coprocessor.
Manufactured using Intel's industry-leading 22nm technology with 3-D Tri-Gate transistors, each coprocessor features more cores, more threads, and wider vector execution units than an Intel Xeon processor. The high degree of parallelism compensates for the lower speed of each core to deliver higher aggregate performance for highly parallel workloads.