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Compact black SFX power supply with modular cables and a 90mm fan

Thermaltake

Thermaltake Toughpower SFX 850W power supply PS-STP-0850FNFAPU-1

SKU CH-S4DT-G74XC MPN PS-STP-0850FNFAPU-1

An SFX form-factor power supply delivering 850 W with 80 PLUS Platinum efficiency, full modular cables and a native 12V-2x6 connector for ATX 3.1 builds

  • ColorBlack
  • TypeATX 12V 3.1
  • Maximum Power850 W
  • Fans9cm FDB Fan
  • PFCActive
  • PCI-Express Connector2 x 6+2-Pin

Options SFX 850W ATX 3.1 Platinum

  • Delivers 850 W for demanding builds
  • 80 PLUS Platinum efficiency at 115 V input
  • ATX 12V 3.1 compliant for modern platforms
  • Native 12V-2x6 connector supports up to 450 W
  • Full modular design simplifies cable management

SFX 850 W power supply

This SFX-form-factor unit delivers 850 W of continuous power and meets the ATX 12V 3.1 specification. It is built for compact systems that still demand high output, such as small-form-factor gaming rigs or workstation builds. Full modular cabling keeps the interior tidy and improves airflow in tight chassis. The 90 mm fluid-dynamic-bearing fan runs quietly under typical loads.

80 PLUS Platinum efficiency and 12V-2x6 connector

The supply is 80 PLUS Platinum certified at 115 V input, so it wastes less energy and generates less heat across the load range. A native 12V-2x6 connector rated for 450 W feeds modern graphics cards without adapters. Two 6+2-pin PCIe cables provide additional GPU power options. The single +12 V rail design simplifies power distribution for high-draw components.

125 mm depth fits SFX cases

At 125 mm long the unit fits standard SFX mounting brackets and leaves room for cable routing behind the motherboard tray. Full modularity means only the cables the build actually needs are installed, freeing space for storage drives or custom loops. Active PFC and a 100-240 V input range allow worldwide use without a voltage switch. Protection circuits include OVP, UVP, OCP, OPP, SCP and OTP.

Highlights

  • Delivers 850 W for demanding builds
  • 80 PLUS Platinum efficiency at 115 V input
  • ATX 12V 3.1 compliant for modern platforms
  • Native 12V-2x6 connector supports up to 450 W
  • Full modular design simplifies cable management

Specifications

BrandThermaltake
SeriesToughpower SFX
ModelSFX-0850AH8FLP
Part NumberPS-STP-0850FNFAPU-1
ColorBlack
TypeATX 12V 3.1
Maximum Power850 W
Fans9cm FDB Fan
PFCActive
PCI-Express Connector2 x 6+2-Pin
Max PSU Length125 mm
ModularFull Modular
Power Good Signal100-150 msec
EfficiencyMeet 80 PLUS® Platinum at 115Vac input.
Energy-Efficient80 PLUS PLATINUM Certified
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current15A - 8A
MTBF>100,000 Hours
ApprovalsCE/UKCA/FCC/ICES/CB/TUV/cTUVus/LVD/CCC/BSMI/S-MARK/EAC/RCM
Hold-up Time> 17msec at 80% load
Dimensions125mm(W)x63.5mm(H)x103.8mm(D)
Shipping weight2.09 kg
Package size254 × 178 × 114 mm

Other versions of this model

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Questions about this item

Will this SFX unit fit in a case that only accepts 100 mm power supplies?

The power supply measures 125 mm in length, so it will not fit in a case limited to 100 mm.

Does the unit include the 12V-2x6 connector needed for modern graphics cards?

Yes, a native 12V-2x6 connector rated for 450 W is included and supports ATX 12V 3.1.

Is the fan diameter small enough for tight SFX clearances?

The unit uses a 90 mm FDB fan, which is the standard size for SFX form factor builds.

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