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Black rectangular ATX power supply unit with fixed flat cables and a 12 cm fan grille

Thermaltake

Thermaltake Smart BX3 Pro 750W ATX 3.1 power supply PS-SPD-0750NNFABU-7

SKU CH-ZDNQ-G0DJ5 MPN PS-SPD-0750NNFABU-7

A 750W ATX 3.1 unit with a native PCIe 5.1 12V-2x6 connector, 80 Plus Bronze efficiency and 105°C main capacitor for modern GPU builds

  • Max wattage750 W
  • Modular cablingNon-Modular
  • Fan configuration12 cm FDB Fan
  • Power factor correctionActive
  • PSU length limit140 mm
  • Power good signal100-150 msec
  • ATX 3.1 compliant for modern system stability
  • Native PCIe 5.1 12V-2×6 connector delivers up to 600 W to new GPUs
  • 105 °C main capacitor ensures durability under high temperatures
  • 80 Plus Bronze certified at 750 W continuous output at 40 °C
  • 140 mm compact length fits a wide range of chassis

ATX 3.1 power supply for modern builds

This 750 W unit meets the Intel ATX 3.1 specification and includes a native PCIe 5.1 12V-2X6 connector rated for up to 600 W. A 12 cm FDB fan and a 105°C main capacitor support continuous output at 40°C. The non-modular design uses etched flat cables for easier routing.

Suits single-GPU systems needing ATX 3.1 compliance

Builders who want a native 12V-2X6 cable without adapters will benefit from the direct connection. Systems that require fully modular cabling or a higher total wattage should consider other models. The compact 140 mm length fits most chassis, but very small cases may still be tight.

Verify case clearance and cable needs

Confirm the case accepts a 140 mm deep non-modular PSU and that fixed cables will reach all components. Check the motherboard requires an ATX 3.1 power-good signal of 100-150 msec and hold-up time above 17 msec at 80% load. Ensure the mains supply provides 100-240 V at 50/60 Hz.

How it compares

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

Price $61.99
Cheaper than about 84% of the 10,869 comparable items (median $142.99).
Max wattage 750 W
Lower than about 60% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameThermaltake
Model nameSmart BX3 Pro 750 W
Part numberPS-SPD-0750NNFABU-7
Product colorBlack
Product typeATX 3.1
Ports & slots
Output type+3.3 V@18A, +5 V@18A, +5VSB@3A
Connection types1 × 12VHPWR (12+4) PCIe / 1 × 24 pin ATX / 2 × 8 pin (4+4) EPS (CPU) / 3 × 8 pin (6+2) PCIe / 4 × 4 pin Peripheral / 4 x SATA
Power
Max wattage750 W
Modular cablingNon-Modular
Power factor correctionActive
Power good signal100-150 msec
Power hold-up time> 17msec at 80% load
Efficiency certification80 PLUS BRONZE Certified
Built-in protectionOCP/OVP/OPP/OTP/UVP/SCP
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current15A-6A
Size & build
Product dimensions150 × 140 × 86 mm
Shipping weight2.22 kg
Package size272 × 216 × 124 mm
Compatibility
PSU length limit140 mm
Environment & compliance
Regulatory approvalsCE/UKCA/LVD/UKCA/FCC/ICES/TUV/CB/cTUVus/BSMI/CCC
More details
Fan configuration12 cm FDB Fan
Mean time between failures100,000 hrs minimum

Questions about this item

Will my graphics card work with the native PCIe 5.1 12V-2x6 connector that delivers up to 600W?

The unit includes a native PCIe 5.1 12V-2x6 cable rated for 600W, so any GPU using that connector will receive full power without an adapter.

Does the 140 mm length leave room for my existing drive cages and cable routing?

At 140 mm the housing fits most ATX cases, and the flat etched cables are more flexible than round ones, making routing around drive cages easier.

How can I confirm the matcha dual-coloured H++ connector is seated correctly after I plug it in?

The matcha colour disappears when the connector is fully inserted, giving a clear visual cue that the connection is secure.

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