Celeron is Intel‘s brand name for low-end IA-32 and x86-64 computer microprocessor models targeted at low-cost personal computers. These processors are compatible with IA-32 software.

They typically offer less performance per clock speed compared to flagship Intel CPU lines, such as the Pentium or Core brands. Celeron branded processors often have less cache or intentionally disabled advanced features, with variable impact on performance. While some Celeron designs have achieved strong performance for their segment, most of the Celeron line has exhibited noticeably degraded performance. This has been the primary justification for the higher cost of other Intel CPU brands versus the Celeron range.

Introduced in April 1998, the first  CPU was based on the Pentium II. Subsequent  CPUs were based on the Pentium IIIPentium 4Pentium M, and Intel Core.

Dual-processor support

As a budget processor, it does not support a dual-processor configuration using multiple CPU sockets, however it has been discovered that multiprocessing could be enabled on Slot 1 Celeron processors by connecting a pin on the CPU core to a contact on the processor card’s connector. In addition, Mendocino Socket 370 processors can use multiprocessing when used on specific dual Slot 1 motherboards by using a slot adapter. The unofficial SMP support was removed in the Coppermine Celerons, and dual-socket support is now limited to higher-end Xeon server-class processors. Conroe/Allendale based Celeron processors and later support multiprocessing using multi-core chips, but are still limited to one socket.

The ABIT BP6 motherboard also allows two Mendocino Socket 370  processors to operate in a symmetric multiprocessing (SMP) configuration without any modification to the CPUs or the motherboard.

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