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Antec TruePower 550watt Power Supply Review

By: Asher Moses | Other PSUs in Cases, Cooling & PSU | Posted: Jul 10, 2002 4:00 am
TweakTown Rating: 9.5%Manufacturer: Antec



ATX 12v, 2.03 compliant.


Can be used with either Pentium 4 or AMD motherboards.


Dual ball bearing, thermostatic fans with speed controllers to regulate temperature inside the power supply.


Individual voltage outputs and regulation for stable +5v, +3.3v, +12v outputs.


Gold plated connectors.


MTBF 80,000 hours.


Input Voltage: 115v / 230v AC manually switched.


Frequency: 60Hz / 50 Hz.


Input current: 12A for 115v, 6A for 230v.


- Output Voltage


+5v at 40 amps


+12v at 24 amps


+3.3v at 32 amps


-5v at 0.5 amp


-12v at 1 amp


+5v SB at 2 amp


- Motherboard Connectors


20-pin Main Power Connector


6-pin Aux Power Connector


4-pin +12v Power Connector (Provide for the extra power needs of Pentium 4 CPUs).


- Peripheral Connectors


8x 4-pin peripheral connectors


2x 4-pin floppy drive connectors


2x 2-pin Case fan connectors for controlling 2 case fans for optimum balance between cooling and low noise.


- Power_On Signal


In the ATX Power Supply, this signal supports the ability to power the system down with software. Windows will automatically shut down the computer, rather than display a message that it is safe to shut down the computer. This also allows the optional use of the keyboard to power the system back on.


- +5v_SB (standby) Signal


This voltage is always active, giving the motherboard a limited source of power, even when the computer is switched off (case switch).


- +5v Power_Good (OK) Signal


This is generated in the power supply (+3v to +6v) when it has passed its self-tests and the outputs have stabilised - This takes 100 to 500 milliseconds after the supply is turned on. If the Power_Good signal drops below +3v, it causes the motherboard to issue a systems reset signal and shuts off the CPU clock. The effect of this repeated reset signal stops the computer from operating.


- -5v and -12v Voltage Output


The -5v and -12v voltages are not used at all in many modern systems, although they are still required for backward compatibility.


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