Power supply ASUS ROG Loki SFX-L 850W Platinum ATX 3.0, PCIe Gen5 PSU, ARGB Fan Aura Sync - 90YE00N3-B0NA00

The ASUS ROG Loki SFX-L 850W Platinum is a compact yet serious power supply, aimed at high-end gaming and compact enthusiast configurations. The SFX-L format allows you to fit it into small cases without sacrificing power, and 850W is sufficient for a powerful CPU and a modern high-end GPU. The 80+ Platinum certification and the declared 92% efficiency mean fewer losses and lower heat. Add ATX 3.0 / PCIe Gen 5.0 support and you get a PSU ready for modern graphics cards with a 16-pin connector.

What you get here: a stable and efficient power supply with Active PFC, which operates in a wide 100–240 VAC range, so you don't have to worry about mains voltage. The fully modular design allows you to attach only the cables you need, which is critical in small SFX-L cases – better airflow and less cable clutter. With a PCI-E 16-pin connector for Gen 5 GPUs and three PCI-E 8-pin connectors, you are covered for both new and previous generations of graphics cards. The addressable RGB lighting integrates with the ASUS Aura Sync ecosystem, so you can synchronize the colors with the other components. Despite the compact 100 x 125 x 63.5 mm chassis, you get enough connectors for drives and peripherals via 6 SATA and 4 peripheral outputs.

• 850W Power – sufficient for a high-end GPU and a multi-core CPU in a compact or standard gaming configuration.
• 80+ Platinum certification and 92% efficiency – lower losses, less heat, and a quieter system under load.
• SFX-L format with 125 mm length – ideal for small cases, but also compatible with most ATX cases with a suitable adapter.
• ATX 3.0 / PCIe Gen 5.0 with PCI-E 16-pin – readiness for modern graphics cards with the new 16-pin power connector.
• Modular design – all cables are separate, which facilitates cable management and improves airflow.
• Rich connector set – MB 24/20-pin, two CPU 4+4-pin, three PCI-E 8-pin, six SATA, and four peripheral for flexible configurations.
• Addressable RGB lighting in a black chassis – visually fits modern ARGB builds and synchronizes with the rest of the hardware.

This power supply is suitable if you are building a compact SFX-L or a cleaner ATX build with a powerful graphics card and care about efficiency and a modern standard (ATX 3.0 / Gen 5). It is an especially good choice for gaming and streaming configurations where you want reliability and stable voltages under prolonged load. If you are chasing an ultra-cheap budget build or need a PSU for a much weaker system, this combination of power and Platinum class might be excessive for you.

The most meaningful aspect here is the combination of 850W power, 80+ Platinum efficiency, and the SFX-L form factor, plus the readiness for PCIe Gen 5 – you really get a compact, quiet, and future-oriented power supply that you will not need to replace soon.