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Compact SFX power supply with matte black finish and modular cable ports

Seasonic

Seasonic FOCUS SPX-750 2021 750W SFX power supply

SKU CH-0B1J-Y2X0W MPN FOCUS SPX-750 2021

Compact SFX12V unit delivers 750 W through a single +12 V rail with 80 PLUS Platinum efficiency and full modular cables

  • TypeSFX12V
  • Maximum Power750 W
  • Fans1 x 92 mm Fluid Dynamic Bearing Fan
  • Main Connector20+4Pin
  • +12V RailsSingle
  • PCI-Express Connector4 x 6+2-Pin

Options SFX Platinum (750W)

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  • Compact SFX design fits small cases at 125 mm length
  • 80 PLUS Platinum efficiency cuts wasted energy during conversion
  • Full modular cabling reduces clutter and improves airflow
  • Hybrid fan control enables fanless operation at low loads
  • Single +12V rail delivers 62 A for stable GPU power

750 W SFX Platinum Power Supply

The Seasonic FOCUS SPX-750 2021 is a compact SFX12V unit rated at 750 W. It fits small-form-factor builds that need high output without the bulk of a standard ATX supply. Full-modular cabling lets you connect only the cables your build requires. The single +12 V rail delivers up to 62 A for modern graphics cards and CPUs.

Hybrid Fan Control and Platinum Efficiency

A 92 mm fluid-dynamic-bearing fan runs in three stages: Fanless Mode at low load, Silent Mode for moderate work, and Cooling Mode under heavy demand. The 80 PLUS Platinum rating means less energy is wasted as heat during conversion. Protections include OPP, OVP, UVP, OCP, OTP and SCP for safe operation across 100-240 V input.

SFX Dimensions and Cable Reach

The housing measures 125 mm long, 100 mm wide and 63.5 mm high, matching the SFX form factor. Included cables provide a 350 mm 24-pin motherboard lead, two 400 mm 4+4-pin CPU leads, four PCIe 6+2-pin connectors on 500 mm leads, six SATA connectors on two 600 mm leads, and three peripheral connectors on a 700 mm lead.

Helstu kostir

  • Compact SFX design fits small cases at 125 mm length
  • 80 PLUS Platinum efficiency cuts wasted energy during conversion
  • Full modular cabling reduces clutter and improves airflow
  • Hybrid fan control enables fanless operation at low loads
  • Single +12V rail delivers 62 A for stable GPU power

Tæknilýsing

BrandSeaSonic
SeriesFOCUS SPX (2021)
ModelFOCUS SPX-750 (Y7751PXSFS)
TypeSFX12V
Maximum Power750 W
Fans1 x 92 mm Fluid Dynamic Bearing Fan
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector4 x 6+2-Pin
SATA Power Connector6
Max PSU Length100 mm
ModularFull Modular
Energy-Efficient80 PLUS PLATINUM Certified
ProtectionOPP, OVP, UVP, OCP, OTP, SCP
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current10 - 5 A
Output+3.3V@20A, +5V@20A, +12V@62A, [email protected] , +5VSB@3A
MTBF>100,000 Hours
ApprovalscTUVus, TUV, CB, CCC, BSMI, EAC, CE
Energy Star, RoHS, WEEE, ErP Lot 6, REACH
Connectors1 x 24 pin (20+4) ATX
2 x 8 pin (4+4) EPS (CPU)
4 x 8 pin (6+2) PCIe
6 x SATA
3 x 4 pin Peripheral
Cable Spec24Pin MB: One cable (350mm)
4+4Pin CPU: Two cables (400mm)
2 x PCI-E 6+2Pin: One cable (500mm)
PCI-E 6+2Pin: Two cables (500mm)
3 x SATA: Two cables (600mm)
3 x Molex: One cable (700mm)
Dimensions2.50" x 4.92" x 3.94"
Weight2.29 lbs.
Sendingarþyngd1.94 kg
Stærð sendingar178 × 178 × 127 mm

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How do I install the SFX12V unit and its cables, and what step do builders often miss?

Mount the 125 x 100 x 63.5 mm chassis with the four screws supplied, connect the 24-pin ATX cable at 350 mm, the two 4+4-pin CPU cables at 400 mm, the four 6+2-pin PCIe cables at 500 mm, and the SATA and peripheral cables — use only the cables your build requires because the design is fully modular.

What maintenance or replacement will the power supply need later?

The 92 mm fluid-dynamic-bearing fan is the only moving part; dust it periodically and replace it if bearing noise appears after many years — the Japanese capacitors and >100,000-hour MTBF mean no other routine service is expected.

What limit appears first under sustained heavy load?

The single +12 V rail tops out at 62 A, so total +12 V power cannot exceed 750 W — that ceiling is reached before any thermal or efficiency boundary in normal operation.

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