Antec TruePower 550W review

Antec has been putting PSUs together forever, so surely you can't go wrong with this 550 watts, 80Plus Bronze certified, SLI ready model?

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  • Should be compatible with most standard PC cases
  • Very good total power efficiency
  • Meets manufacturers' performance specifications
  • Very low voltage noise


  • • A tiny bit louder than some PSU peers in terms of decibel noise

Aimed at power-hungry desktop users and the more ambitious gamer the Antec TruePower 550W can deliver power to a range of system components that include dual GPUs and dual/quad-core CPUs from its four 12 volt rails.

Rather impressively in regards to total efficiency, the Antec TruePower 550W led the field, beating out other lower-range power supplies in its class, including the Xigmatek NRP 600W and the OCZ StealthXStream 2 600W.

It also achieved a very respectable third place out of seven contenders in terms of standby efficiency, narrowly losing out to the OCZ StealthXStream 2 600W and the Corsair HX 650W.

This PSU produced slightly more decibel noise compared to similar power supplies in its class like that Xigmatek PSU and the Fractal Design Tesla 650W, although it was still among the quietest under test. The 120mm fan performed well to vent heat and the cables remained fairly cold during high load testing.

Throughout all the testing the Antec TruePower 550W achieved 100 per cent of the manufacturer's claimed performance over its 12 volt rails. These tested rails were all within the ATX-specified tolerances, successfully adhering to the standard.

The TruePower produced the least amount of jitter voltage of all similar power supplies under test at the 75 per cent load level, making an almost perfect flat line translating to very-low electrical interference for the end user.

Antec truepower 550w

The PSU has a black casing, complimented by a square patterned grate at the rear, used as an exhaust to vent excess heat. The build quality of the Antec TruePower 550W is generally robust. It is of a standard design and has dimensions of 150 x 86 x 150mm and weighs in at an average 2.135kg.

The manufacturers' stated AC power input is 100-240V 8A -4A 50-60Hz. It comes with a total of 24 well selected output connectors; 1x ATX 24-pin connector, 1x CPU 8-pin connector, 1x ATX 4-pin connector, 1x PCI Express 6/8-pin connector, 1x PCI Express 6-pin connector, 9x SATA connectors, 9x 4-pin peripheral (MOLEX) connectors, and 1x floppy connectors.

A well-engineered PSU with very good overall performance; it leaves little in regards to improvements for its class and met the manufacturer's specifications for 100 per cent of its loads.

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Tech Specs

Product TypeATX12V & EPS12V Power Supply
NVIDIA SLI SupportedYes
Number of +12V Rails4
Product FamilyTruePower
Brand NameAntec
Form FactorInternal
Input Voltage110 V AC, 220 V AC
Output Power550 W
Output Voltage3.3 V DC, 5 V DC, 12 V DC, -12 V DC, 3.3 V DC @ 25 A, 5 V DC @ 25 A, 12 V DC @ 20 A, -12 V DC @ 800 mA, 5 V DC @ 3 A
Number of Fans1
Green CompliantYes
Green Compliance Certificate/AuthorityRoHS, 80 Plus Bronze
Height86.4 mm
Width149.9 mm
Depth149.9 mm

Dual/Quad Core CPUs

ManufacturerAntec, Inc
Product ModelTP-550
Product NameTruePower TP-550 ATX12V & EPS12V Power Supply
Product LineTruePower
Manufacturer Part Number0761345-01803-6
Manufacturer Website Address
Marketing Information

TruePower, the original high-performance power supply, has been totally re-engineered to satisfy today's demands for quality, reliability and performance. Antec's TP-550 offers users its most advanced power supply yet, featuring Japanese brand capacitors for reliability, DC to DC converters for exceptional voltage regulation, a Japanese brand 120mm PWM fan for quiet operation and 80 PLUS Bronze certification for greater efficiency. The TP-550 is the ideal solution for power users, elite system builders and quality-minded enthusiasts alike.

Limited Warranty5 Year
Weight (Approximate)2.30 kg