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Compact SFX power supply unit with matte black finish and modular cable sockets visible

Seasonic

Seasonic FOCUS SGX-750 2021 750W SFX power supply

SKU CH-VEQ9-XSDPD MPN FOCUS SGX-750 2021

Compact SFX unit delivers 750 W through a fully modular design with 80 Plus Gold efficiency and a 92 mm fluid-dynamic fan

  • Max wattage750 W
  • Modular cablingFull Modular
  • Fan configuration1 × 92 mm Fluid Dynamic Bearing Fan
  • Main power connector20+4Pin
  • 12V railsSingle
  • PCIe power connectors4 × 6+2-Pin

Model SFX Gold (750W)

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  • Delivers 750 W from a 100 mm SFX frame
  • 80 PLUS Gold efficiency reduces wasted energy during conversion
  • Full-modular cables let you install only what the build needs
  • 92 mm fluid-dynamic fan enables fanless operation at low load
  • Single +12 V rail rated at 62 A powers demanding GPUs

Compact SFX power for small builds

The Seasonic FOCUS SGX-750 2021 is a 750 W SFX12V unit built for compact systems that still demand high output. Its 100 mm length and full-modular cable set let builders use only the connections they need, keeping tight interiors tidy and airflow clear.

750 W headroom with Gold efficiency

A single +12 V rail delivers 62 A, giving ample headroom for modern GPUs and CPUs while the 80 PLUS Gold rating keeps waste heat low under typical loads. The unit tops out at its rated 750 W, so sustained draws beyond that will trip protection circuits.

Hybrid fan control and broad protection

A 92 mm fluid-dynamic-bearing fan runs in three stages, starting with a fanless mode at low load before moving to silent and cooling modes as temperature rises. Full modular cables include two EPS, four PCIe 6+2-pin, six SATA and three peripheral connectors, while OPP, OVP, UVP, OCP, OTP and SCP safeguard the rest of the build.

How it compares

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

Price $122.99
Cheaper than about 58% 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 nameSeaSonic
Product lineFOCUS SGX (2021)
Model nameFOCUS SGX-750 (Y7751GXSFS)
Product typeSFX12 V
Ports & slots
PCIe power connectors4 × 6+2-Pin
SATA power connectors6
Output type+3.3 V@20A, +5 V@20A, +12 V@62A, +5VSB@3A
Connection types1 × 24 pin (20+4) ATX
2 × 8 pin (4+4) EPS (CPU)
4 × 8 pin (6+2) PCIe
6 x SATA
3 × 4 pin Peripheral
Power
Max wattage750 W
Modular cablingFull Modular
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Built-in protectionOPP, OVP, UVP, OCP, OTP, SCP
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current10–5 A
Size & build
Product dimensions2.5 in × 4.92 in × 3.94 in
Product weight2.29 lb (1.04 kg)
Shipping weight1.94 kg
Package size178 × 178 × 127 mm
Compatibility
PSU length limit100 mm
Environment & compliance
Regulatory approvalscTUVus, TUV, CB, CCC, BSMI, EAC, CE
Energy Star, RoHS, WEEE, ErP Lot 6, REACH
More details
Fan configuration1 × 92 mm Fluid Dynamic Bearing Fan
Mean time between failures>100,000 h

Other versions of this model

5 more in the same range

Questions about this item

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

The housing is 125 mm long, so it exceeds a 100 mm limit and will not fit in that case.

Can the included cables reach the motherboard and graphics card in a mid-tower build?

The 24-pin cable is 350 mm, each CPU cable is 400 mm, and the PCIe cables are 500 mm, which is sufficient for most mid-tower layouts.

Does the fan stay off under light loads?

Yes, the hybrid control runs in Fanless Mode at low load, then moves to Silent Mode and Cooling Mode as temperature rises.

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