The Seasonic FOCUS SGX-650 (2021) is a premium category ultra-compact power supply specially designed for the smallest (SFF - Small Form Factor) builds. Compared to the previous version, its length is only 100 mm, so it leaves significantly more space for routing cables in narrow ITX cases.

Main features:
- Certificate: 80 PLUS Gold efficiency (up to 90% efficiency at 50% load).
- Size (SFX): 125 mm (W) x 100 mm (D) x 63.5 mm (H). This is the true SFX standard, not the longer SFX-L.
- Cooling: 92 mm fluid bearing (FDB) fan, which is quieter and more durable than traditional ball bearing solutions.
- Hybrid Silent Fan Control: At low load (up to approx. 30%), the fan stops completely, so the power supply remains completely silent.
- Fully Modular: You only need to use the cables you really need, maximizing airflow in the house.

Technical data:
- Power: 650 W
- Color: Black
- Weight: ~1.1 kg
- Cabling: Flat, black cables (easy to bend in tight spaces).

Connectors:
1 pc 24-pin motherboard
1 x 8/4-pin CPU
2 x 6+2-pin PCI-E (GPU)
3 SATA
3 Molex

Protection: OPP, OVP, UVP, OCP, OTP, SCP.