Advanced Tranfer Cache (ATC) is a type of L2 cache contained within the Pentium III series processor that is embedded on the same die as the CPU itself. The ATC was first implemented on the Pentium III "Coppermine" processor, where it offered a significant boost in cache performance resulting in notable per clock performance gains for the CPU when compared to its predecessor, "Katmai". Diagram of a CPU memory cache A CPU cache is a cache used by the central processing unit of a computer to reduce the average time to access memory. ... Pentium III logo The Pentium III is an x86 (more precisely, an i686) architecture microprocessor by Intel, introduced on February 26, 1999. ... CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ...

Characteristics on the Pentium III "Coppermine":

• Cache is at the same clock speed as the processor
• 256-bit data bus
• Improved buffering between the cache and CPU
• Significantly lower cache latency
• 8-way associativity