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Thermaltake

Thermaltake Toughpower SFX 450W Gold PS-STP-0450FPCGUS-G power supply

SKU CH-MMD5-ZB64C MPN PS-STP-0450FPCGUS-G

SFX power supply delivering 450 W continuous power with 80 PLUS Gold efficiency, fully modular cables and a zero-RPM smart fan for quiet operation

  • Max wattage450 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 80 mm Double Ball Bearing Fan (Zero RPM Smart Fan System
  • Power factor correctionActive
  • Main power connector20+4Pin
  • 80 PLUS Gold certification delivers up to 90% efficiency reducing power loss
  • Fully modular flat cables simplify cable management for cleaner builds
  • Single +12V rail rated at 37A provides stable power delivery
  • Zero RPM smart fan system stops fan at low loads for silent operation
  • SFX to ATX adapter bracket included enables installation in standard ATX cases

Thermaltake Toughpower SFX 450W Gold

This SFX form-factor power supply delivers 450 W of continuous power with 80 PLUS Gold certified efficiency above 90 percent. A fully modular cable set and an included SFX-to-ATX adapter bracket allow installation in both compact and standard chassis. The unit meets Intel SFX 12V 3.3 and ATX 12V 2.4 specifications.

Best for compact builds needing efficient.

Builders assembling small-form-factor systems who want full modular cabling and Gold-level efficiency will find this unit a direct fit. The single +12 V rail rated at 37 A supports modern graphics cards requiring two 6+2-pin PCIe connectors. Buyers needing more than 450 W total output or more than three SATA power connectors should look at higher-capacity models.

450 W continuous power with 80 PLUS Gold efficiency

The 450 W rating is the decisive specification; it sets the hard limit for total system draw. Active PFC, a 100-240 V input range and protections including over-voltage, under-voltage and short-circuit complete the core feature set. A 16 ms minimum hold-up time and 100-500 ms power-good signal meet the stated ATX 12V 2.4 timing requirements.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $81.99
Cheaper than about 75% of the 10,869 comparable items (median $142.99).
Max wattage 450 W
Lower than about 86% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameThermaltake
Product lineToughpower SFX 450 W
Model namePS-STP-0450FPCGUS-G
Product typeIntel SFX 12 V 3.3 / ATX 12 V 2.4
Ports & slots
PCIe power connectors2 × 6+2-Pin
SATA power connectors3
Output type+3.3 V@19A, +5 V@14A, +12 V@37A
Connection types1 × 24-pin ATX main connector
1 × 4+4pin EPS 12 V connector
2 × 6+2 PCI-E
3 x SATA connectors
2 x Peripheral & 1 x FDD connectors
Power
Max wattage450 W
Power efficiency> 90%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Power good signal100-500 ms
Power hold-up time16 ms min.
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current3.5A - 7A
Size & build
Product dimensions2.5 in × 3.94 in × 4.9 in
Shipping weight1.70 kg
Package size185 × 165 × 97 mm
Environment & compliance
Regulatory approvalsCE / FCC / UL / Bauart Mark+CB / EAC certification
More details
Fan configuration1 × 80 mm Double Ball Bearing Fan (Zero RPM Smart Fan System)
Mean time between failures>120,000 h

Questions about this item

How loud and hot does the 80mm double ball bearing fan get during all-day operation?

The Zero RPM Smart Fan System stops the fan at low loads and spins it up only when temperatures rise, keeping noise minimal and heat controlled during extended use.

What cables or connectors must I already have to use the fully modular design?

You only need the cables supplied with the unit — 20+4-pin main, two 6+2-pin PCIe and three SATA connectors — because every output is detachable at the PSU side.

Will the single +12V rail rated at 37A work reliably with older components that expect multi-rail limits?

Yes, the single +12V rail delivers up to 37A without per-rail caps, so legacy parts draw exactly what they need without tripping over-current protection.

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