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Black rectangular ATX power supply with etched flat cables and a 12cm fan

Thermaltake

Thermaltake Smart BX3 Pro 650W power supply PS-SPD-0650NNFABU-7

SKU CH-4ZZF-HP07X MPN PS-SPD-0650NNFABU-7

A 650 W ATX 3.1 power supply with a native PCIe 5.1 12V-2X6 connector, non-modular etched flat cables, dual-colour H++ connectors, a 105 °C main capacitor and 80 Plus Bronze efficiency

  • Max wattage650 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 platform stability
  • Native PCIe 5.1 12V-2X6 connector delivers up to 450 W to new GPUs
  • 105 °C main capacitor ensures durability under heavy loads
  • 80 Plus Bronze certified efficiency at 650 W continuous power
  • Compact 140 mm length fits a wide range of chassis

Thermaltake Smart BX3 Pro 650W ATX 3.1

The Thermaltake Smart BX3 Pro is a 650W ATX 3.1 power supply with a native PCIe 5.1 12V-2X6 connector. It uses a non-modular design with etched flat cables and a 12cm FDB fan. A 105°C main capacitor and active PFC support continuous output at 40°C. It carries 80 Plus Bronze certification and full protection suite.

Who this suits and who should look elsewhere

This unit suits builds that need a native 12V-2X6 connection for modern graphics cards without cable adapters. The 140mm length fits most standard chassis. Builders who prefer modular cabling for a cleaner interior should consider a modular alternative. Systems requiring higher wattage than 650W need a larger unit.

The specification that decides fit

The native PCIe 5.1 12V-2X6 connector delivers up to 450W directly to the graphics card. If your GPU requires this connector, the Smart BX3 Pro removes the need for an adapter. If your graphics card uses traditional PCIe plugs, the fixed cable set still provides the necessary leads but the 12V-2X6 will remain unused.

How it compares

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

Price $53.99
Cheaper than about 89% of the 10,869 comparable items (median $142.99).
Max wattage 650 W
Lower than about 70% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameThermaltake
Model nameSmart BX3 Pro 650 W
Part numberPS-SPD-0650NNFABU-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 wattage650 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 weight2.18 kg
Package size279 × 216 × 127 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

What does the 650 W rating mean once the unit is installed in a PC?

The PSU delivers 650 W of continuous power at 40 °C, meeting ATX 3.1 timing standards for stable operation under load.

What does the native PCIe 5.1 12V-2×6 connector cap in practice?

It supplies up to 450 W to a modern graphics card, removing the need for adapters and supporting ATX 3.1 power-excursion requirements.

How much clearance does the 140 mm length need inside the case?

The chassis must accept a power supply up to 140 mm deep; the compact size fits most ATX cases without interfering with drive cages or long GPUs.

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