Description
The SilverStone SX1000 Platinum represents a milestone in power supply engineering, packing 1000W of 80 PLUS Platinum certified efficiency into the SFX-L form factor. Designed for enthusiasts who refuse to compromise on performance in small-volume chassis, this unit provides a massive 83.3A on a single +12V rail. With its 100% modular design and flexible flat cables, it simplifies cable management in tight spaces while ensuring peak electrical stability through high-quality Japanese electrolytic capacitors and strict ±3% voltage regulation.
This product is for:
This power supply is engineered for five primary users: SFF enthusiasts building in Mini-ITX cases that support SFX-L; high-end gamers utilizing power-hungry GPUs like the RTX 4090; workstation professionals requiring 24/7 reliability for multi-core rendering; overclockers who need precise voltage control and low ripple noise; and minimalist builders who prioritize clean aesthetics with short, manageable cabling.
Detailed specifications:
- Form Factor: SFX-L (125mm W x 63.5mm H x 130mm D)
- Efficiency: 80 PLUS Platinum (89% to 92% efficiency at 20% to 100% load)
- Power Output: 1000W continuous at 50°C operating temperature
- Cooling: 120mm dual ball bearing fan with intelligent semi-fanless mode
- Protection: Over current, Over power, Over voltage, Short circuit, and Over temperature protection
- Connectivity: Dual EPS 8-pin and six PCIe 8/6-pin connectors for high-end hardware compatibility
- MTBF: 100,000 hours of expected lifespan
In real-world application, the SX1000 Platinum operates with exceptional silence. The 120mm dual ball bearing fan remains inactive during low-load scenarios, and even under heavy stress, the noise level peaks at a manageable 36 dBA. The inclusion of short, flat cables is a critical advantage for SFF builds, significantly improving airflow by reducing internal clutter. Its ability to maintain full 1000W output at a constant 50°C ambient temperature ensures that even the most compact, heat-dense systems remain stable under sustained workloads.
Compared to standard SFX power supplies, the SFX-L dimensions of the SX1000 allow for a larger 120mm fan, which provides superior cooling at lower RPMs than the 80mm or 92mm fans found in smaller units. While it is 30mm longer than a standard SFX PSU, it remains significantly smaller than traditional ATX units, offering a middle ground that maximizes both power capacity and thermal efficiency for modern high-performance small-form-factor cases.
Q&A:
Can this power supply fit in a standard SFX case? It requires SFX-L compatibility, as it is 130mm deep compared to the 100mm depth of standard SFX units.
Is the SX1000 Platinum sufficient for an NVIDIA RTX 4090? Yes, with 1000W and a high-amperage +12V rail, it comfortably handles the transient power spikes of flagship GPUs.
Does it come with a warranty for 24/7 operation? It is rated for continuous 24/7 power delivery at 50°C, making it suitable for industrial-grade uptime.
Are the cables compatible with standard SilverStone modular sets? Yes, it uses SilverStone's standard modular interface, though the included cables are specifically shortened for SFF use.
How quiet is the fan during normal desktop use? The fan features a zero-RPM mode, meaning it stays completely silent during light tasks like web browsing or office work.
