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Rectangular ATX power supply unit with matte black finish and fixed cables visible

Thermaltake

Thermaltake Smart BX1 650W Bronze Non-Modular Power Supply PS-SPD-0650NNFABU-1

SKU CH-H0EZ-VVG7W MPN PS-SPD-0650NNFABU-1

Delivers 650 W continuous power with 80 PLUS Bronze efficiency, a single +12 V rail, 120 mm hydraulic-bearing fan and non-modular cabling

  • Max wattage650 W
  • Modular cablingNon-Modular
  • Fan configuration120 mm Hydraulic bearing fan
  • Power factor correctionActive
  • Main power connector20+4Pin
  • 12V railsSingle

Model ATX 80+ Bronze (650W)

  • 80 PLUS Bronze certification delivers up to 88% efficiency
  • Single +12V rail provides 48A for stable GPU power
  • 120mm hydraulic bearing fan enables near-silent cooling
  • Japanese-made main capacitors ensure long-term reliability
  • Compact 140mm depth fits most standard ATX cases

650 W Bronze ATX power supply

This 650 W unit meets ATX 12V v2.3 and EPS v2.92 standards and carries 80 PLUS Bronze certification for up to 88 % efficiency. A single +12 V rail rated at 48 A delivers stable current to the CPU and graphics card, while Japanese-made main capacitors and low ripple noise support reliable operation at 40 ℃ ambient temperature. The non-modular cable set includes a 20+4 pin main connector, two 6+2 pin PCIe connectors and eight SATA power connectors.

Suited to mid-range builds with a single GPU

The 650 W capacity and dual PCIe connectors cover mainstream gaming PCs and workstations that run one discrete graphics card. Builds that require fully modular cabling, higher wattage for multi-GPU configurations, or a smaller form factor should consider other models. The 120 mm hydraulic-bearing fan runs quietly under typical loads, making the unit a good fit for noise-sensitive environments.

Non-modular design fixes the cable complement

Because the cables are permanently attached, the case must accommodate the full bundle including unused leads. Verify that your chassis has enough routing space for the fixed 20+4 pin, PCIe and SATA cables before purchasing.

How it compares

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

Price $48.99
Cheaper than about 91% 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
Product lineSmart BX1 650 W
Model namePS-SPD-0650NNFABU-1
Product typeATX 12 V v2.3 and EPS v2.92
Graphics
SLI supportReady
CrossFire supportReady
Ports & slots
PCIe power connectors2 × 6+2-Pin
SATA power connectors8
Output type+3.3 V@23A, +5 V@17A, +12 V@48A
Connection types1 x Main Power Connector (24+4pin)
1 x ATX 12 V / EPS 12 V (4+4pin)
8 x SATA (4pin)
2 x PCI-E (6+2pin)
4 x Peripheral (4pin)
1 x Floppy
Power
Max wattage650 W
Modular cablingNon-Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Power good signal100-500 ms
Power hold-up time> 16msec at 70% of full load
Efficiency certification80 PLUS BRONZE Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current12A max
Size & build
Product dimensions3.39 in × 5.51 in × 5.91 in
Shipping weight3.51 kg
Package size257 × 201 × 97 mm
Compatibility
PSU length limit140 mm
Environment & compliance
Regulatory approvalsCE/CB/TUV/ UL/ FCC/ BSMI
More details
Fan configuration120 mm Hydraulic bearing fan
Mean time between failures>100,000 h

Other versions of this model

2 more in the same range

Questions about this item

Does the non-modular 650 W unit ship with every cable attached or do I need to buy extra PCIe or SATA leads?

All cables are fixed to the unit — you receive a 20+4-pin main connector, two 6+2-pin PCIe connectors and eight SATA power plugs with no separate purchase required

How do I know the 650 W model is the right capacity for my build instead of the 450 W or 750 W versions?

The 650 W model delivers 48 A on the single +12 V rail, which covers mid-range GPUs and CPUs; choose 450 W for lower-power systems or 750 W when you need more headroom

What does the 80 PLUS Bronze 88 % efficiency figure mean when the PSU is running inside my PC at 40 °C?

At 50 % load the unit converts at least 88 % of AC input into DC power, so less waste heat reaches your components and the 120 mm hydraulic fan can stay quieter

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