Intel SE7221BK1 User Guide - Page 21

Intel® Entry Server Board SE7221BK1-E User Guide Server Board Features Hardware Requirements To avoid integration difficulties and possible board damage, your system must meet the requirements outlined below. For a list of qualified components see the links under http://www.support.intel.com/support/motherboards/server/SE7221BK1-E. Processor One 2.8 GHz or greater Intel® Pentium® 4 processor in an LGA775 package for an 800 MHz system bus. For a complete list of supported processors, see the links under http://www.support.intel.com/support/motherboards/server/SE7221BK1-E. Memory One to four DIMMs Unbuffered DDR2 400/533 MHz ECC or non-ECC (ECC will be disabled if any non-ECC DIMMs are used) 256MB to 1GB DIMMs Should support Serial Presence Detect (SPD) data structure. This allows the BIOS to read the SPD data and program the chipset to accurately configure memory settings for optimum performance. If non-SPD memory is installed, the BIOS will attempt to correctly configure the memory settings, but performance and reliability may be impacted or the DIMMs may not function under the determined frequency. For a complete list of supported memory DIMMs, see the links under http://support.intel.com/support/motherboards/server/SE7221BK1-E. Power Supply The Power Supply must be a minimum of 450 Watts. Suggested connectors include: ƒ 2x12 for Main Power Connector ƒ 2x2 (yellow/black) wires in a 2x4 connector for +12v auxiliary power to Processor ƒ Split 12v rails to SATA ƒ Standard IDE 4 wire connector Table 4. Board Power Supply Voltage Specification PARAM TOLERANCE MIN NOM + 3.3V - 5% / +5% +3.14 +3.30 + 5V - 5% / +5% +4.75 +5.00 + 12V - 5% / +5% +11.40 +12.00 - 12V - 10% / +10% -11.40 -12.00 + 5VSB - 5% / +5% +4.75 +5.00 MAX +3.46 +5.25 +12.60 -13.08 +5.25 UNITS Vrms Vrms Vrms Vrms Vrms 7