Intel unsuccessfully tried to market a server RISC processor in 1989. The i860/960 flopped. However, the Pentium Pro x86 CPU was a breakthrough chip for the company. Intel managed to get the processor into the ASCI Red and claim a world record of computing performance. 9,298 200 MHz Pentium Pro processors helped the system break the 1 TFlop computing performance barrier for the first time. Architecture wise, the Pentium Pro was Intel's sixth generation x86 processor, also referred to as the P6 or i686. Intel originally intended to replace the Pentium/Pentium MMX with the Pentium Pro, but dropped the plan and focused on servers and workstations instead. Pentium Pro processors were made in 500 nm and 350 nm, had 5.5 million transistors (compared to 4.5 million of the regular Pentium MMX versions) and were available with 150 MHz and 200 MHz clock speeds. The P6 was phased out in 1998.