Source : Free On-Line Dictionary of Computing

Celeron
     
         {Intel Corporation}'s trade name for its family of
        {Pentium II} {microprocessors} meant for use in low-end
        computers.
     
        The Celeron is constructed on the 0.25 micron Deschutes base.
        {Clock rates} of 266, 300 and 333 {MHz} are supported.  It is
        built on the same {daughterboard} as the Pentium II without
        the black plastic case and {heat sink}.  Four Celeron models
        are in production as of October 1998.  The 266 and 300 MHz
        models are essentially Pentium II {CPU}s without the Level 2
        {cache} {RAM}.  The 300A and 333 MHz Celerons include 128k of
        Level 2 cache.
     
        A special mounting bracket on the motherboard is used to
        secure the Celeron in place in its standard 242-pin Slot 1
        socket.  Intel calls the caseless design SEPP (Single Edge
        Processor Package) to differentiate it from the Pentium II SEC
        (Single Edge Cartridge).  Some believe that the real purpose
        for the different mounting configurations is to prevent users
        from placing lower cost processors onto Pentium II
        motherboards.
     
        A Celeron is about one third the cost of a similar speed
        Pentium II.  Hardware {hackers} claim that the Celeron 300
        without Level 2 cache could be {overclocked} to perform as
        well as a Pentium II at a fraction of the price.
     
        {Home (http://www.intel.com/Celeron/)}.
     
        {Tom's Hardware (http://www2.tomshardware.com/cpuslot1.html)}.
     
        (1998-10-06)