Description
The SilverStone SST-ST45SF stands as a benchmark for small form factor power delivery, offering 450W of continuous output in a compact SFX chassis. Engineered for 24/7 operation at temperatures up to 50°C (V2.0) or 40°C (V3.0), this unit ensures system stability for high-demand mini-ITX builds. With 80 PLUS Bronze certification, it achieves up to 85% efficiency, reducing waste heat and energy consumption while maintaining a power density of 567W per liter.
This product is for:
- Mini-ITX Enthusiasts: Users building compact gaming rigs or HTPCs requiring reliable SFX power.
- SFF System Integrators: Professionals needing a standardized, high-density power solution for small enclosures.
- Retrofitters: Builders using the included ATX adapter to install an SFX PSU into larger cases for improved airflow.
- Budget-Conscious Gamers: Those seeking 80 PLUS Bronze efficiency and a dedicated +12V rail for mid-range GPUs.
- 24/7 Workstation Users: Individuals requiring a power supply rated for continuous operation under heavy loads.
Detailed specifications:
- Form Factor: SFX (includes ATX adapter bracket for cross-compatibility).
- Total Output: 450W continuous power output.
- Efficiency: 80 PLUS Bronze certified (82% - 85% efficiency at 20% - 100% load).
- +12V Rail: Single rail design providing up to 37.5A (V3.0) or 36A (V2.0).
- Cooling: 92mm silent fan (V3.0) or 80mm silent fan (V2.0) with a minimum noise level of 18dBA.
- Connectors: 1x 24/20-pin motherboard, 1x 8/4-pin EPS, 1x 8/6-pin PCIe, 1x 6-pin PCIe, 3x SATA, 2x 4-pin Peripheral, 1x 4-pin Floppy.
- Protection Suite: Over Current (OCP), Over Voltage (OVP), Short Circuit (SCP), Over Load (OPP), and Under Voltage (UVP).
Operating the SST-ST45SF reveals a focus on thermal management and acoustic performance. The V3.0 model utilizes a 92mm fan that maintains a low noise floor of 18dBA during idle and light loads, ensuring a quiet environment for HTPC or office use. The active PFC and comprehensive protection suite provide peace of mind, while the high power density allows for significant hardware support, including mid-range GPUs, without the bulk of a standard ATX unit.
Unlike standard ATX power supplies that occupy significant internal volume, the SST-ST45SF is purpose-built for space-constrained environments. While many SFX units struggle with heat at high loads, SilverStone’s design supports continuous 450W output even at elevated ambient temperatures. Compared to entry-level SFX units, the inclusion of an ATX adapter bracket and dual PCIe connectors makes it more versatile for varying case sizes and GPU configurations.
Q&A:
- Can I use this SFX PSU in a standard ATX case? Yes, the SST-ST45SF includes a bracket that allows it to be mounted in standard ATX power supply slots.
- What is the difference between V2.0 and V3.0? V3.0 features a larger 92mm fan for quieter operation and updated protection circuits, while V2.0 uses an 80mm fan and is rated for 50°C operation.
- Does this power supply support modern graphics cards? Yes, it includes one 8/6-pin and one 6-pin PCIe connector, supporting mid-range GPUs.
- Is the SST-ST45SF compatible with ATX12V v2.4? Yes, it is fully compatible with the ATX12V v2.4 standard.
- What safety protections are included? The unit features Over Current (OCP), Over Voltage (OVP), Short Circuit (SCP), and in V3.0, Over Load (OPP) and Under Voltage (UVP) protections.
