As expected, Intel released the Pentium II microprocessor on Wednesday. The Pentium II is a Pentium Pro-class chip with MMX extensions and an L2 cache that runs at half the speed of the processor. This new CPU sits on a daughtercard and will therefore require new types of motherboards: it is not backwards compatible with existing Pentium or Pentium Pro motherboards.
OEMs demonstrated systems using 233 and 266 MHz Pentium II microprocessors. A 300 MHz version will be available later this year