Intel MB440LX manual Pentium II Processor, Memory Module

Pentium® II Processor

The system board has two connectors for Pentium II processors. The secondary processor requires a plug-in DC to DC converter on the system board to provide power to the processor.

In a symmetric multiprocessor (SMP) environment, all processors are equal and have no preassigned tasks. Distributing the processing loads between both processors increases system performance. This is particularly useful when application demand is low and the I/O request load is high. In an SMP environment, both processors share a common bus, the same interrupt structure, and access to common memory and I/O channels. The SMP implementation conforms to the Multiprocessor Specification Version 1.4.

Memory Module

The memory module has eight DIMM sockets. The module supports from 16 MB to 1 GB of extended data out (EDO) ECC memory 3.3 V 60 ns DRAMs, mounted on JEDEC DIMMs. You may install mixed sizes and types of DRAM DIMMS in the eight memory banks; however, their speeds must be the same. The BIOS automatically detects and initializes the memory array.

ECC memory detects and corrects single-bit errors from DRAM in real time, allowing your system to function normally. It detects all double-bit errors but does not correct them; it also detects all three-bit and four-bit adjacent errors in a DRAM nibble but does not correct them. When one of these multiple-bit errors occurs, the PAC generates an SERR (system error) that usually halts the system. ECC is calculated on a 64 bit wide memory basis.

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