SilverStone 700W SFX 80 Plus Review: Specs, Pros and Cons
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This silverstone technology sst sx700 g 700w sfx review covers a compact power supply built for small form factor builds. It delivers 700W of power in a standard SFX footprint. The unit features fully modular cabling, allowing you to connect only the cables you need. This reduces clutter inside tight cases. It also carries an 80 PLUS Gold efficiency rating, which means less wasted energy as heat. The design includes a 92mm fan for cooling. You get a reliable power source without the bulk of larger ATX units. This makes it a strong candidate for mini-ITX systems that require high wattage in a small space.
What stands out
- 700W output capacity in a compact SFX form factor
- 80 PLUS Gold efficiency rating for reduced energy waste
- Fully modular design with flexible flat array cables
- 92mm FDB fan with silent operation down to 18 dBA
- Strict 3% voltage regulation and low ripple on the single +12V rail
Who it fits
Good fit for
This power supply suits builders using mini-ITX cases that support SFX units. It is ideal for high-performance gaming rigs or workstations that need strong single-rail power. The fully modular design helps manage cable space in tight enclosures. Users who value quiet operation will appreciate the 18 dBA fan rating. The 700W output handles demanding GPUs and CPUs efficiently. If you need gold efficiency and compact size, this fits your setup perfectly.
Who should skip it
You should look elsewhere if your case only supports ATX mounting holes. This unit is not compatible with standard ATX brackets. It also may not suit users who prefer passive cooling, as it relies on a 92mm fan. If you need multiple +12V rails for specific legacy hardware, note that this uses a single rail design. Additionally, users wanting a larger 120mm or 140mm fan for potentially lower noise under load will find the 92mm fan too small for their preference.
Verdict: The SilverStone SST-SX700-G offers robust 700W power in a compact SFX frame with gold efficiency. It is a solid choice for high-end mini-ITX builds that need reliable, quiet performance.
Key specs explained
700W Wattage
This value indicates the maximum continuous power the unit can deliver to your components. You can use this rating to ensure your CPU and graphics card receive sufficient energy under heavy load. Higher wattage provides headroom for future upgrades or power-hungry hardware. You should match this limit to your system’s peak power draw to avoid instability or shutdowns during intensive tasks.
80 PLUS Gold Efficiency Rating
This certification confirms the power supply converts at least 90% of AC input to DC output at typical loads. You will waste less energy as heat, which improves overall system efficiency. This rating helps lower electricity costs and reduces thermal output inside your case. You should compare this against Bronze or Platinum units to balance performance and power consumption for your specific build needs.
Fully Modular Cables
This feature allows you to detach every cable from the unit. You only connect the specific cables required for your components. This reduces clutter inside your case and improves airflow for better cooling. You gain more flexibility when building in tight spaces or customizing cable management. You should compare this with semi-modular options to see if the extra organization is worth the potential cost difference for your setup.
92mm Fan Size
This dimension refers to the cooling fan installed inside the unit. A 92mm fan is standard for SFX form factors. You can expect quieter operation compared to smaller fans that must spin faster to move the same amount of air. This size helps maintain stable temperatures without generating excessive noise. You should consider this when prioritizing acoustic performance in a compact chassis where fan space is limited.
Design and build quality
The SilverStone SST-SX700-G measures 3.94 by 2.5 by 4.92 inches and weighs 3.09 pounds. It uses a standard SFX form factor. This size allows it to fit into small cases that support SFX units. Note that it is not compatible with ATX mounting holes. You must verify your case supports this specific footprint before installation.
The unit features a black finish with lead-free paint. According to the listing, it includes a 92mm FDB fan. This fan size helps maintain silent operation at a minimum of 18 dBA. The fan choice supports efficient cooling in compact spaces without generating excessive noise. All Japanese capacitors are used throughout the build. This component selection contributes to stable voltage regulation and low ripple.
Cabling is fully modular with flexible flat arrays. You can connect only the cables you need for your build. This flexibility reduces clutter inside small chassis. The design prioritizes clean cable management. The single +12V rail offers strict 3% voltage regulation. These build choices ensure reliable power delivery in tight spaces. The compact dimensions and modular layout make it suitable for compact builds where space is limited.
Setup and everyday use
Installing this unit requires a case that supports the standard SFX form factor. You must verify that your chassis has mounting holes compatible with SFX dimensions. The power supply is not compatible with ATX power supply mounting holes, so check your case specifications carefully before proceeding. The fully modular design simplifies cable management. You connect only the cables you need to your components. All cables feature flexible flat arrays, which makes routing them through tight spaces in small form factor builds easier. This flexibility helps you maintain better airflow inside your case. The unit runs with a 92mm fan. This fan size is standard for SFX units. It operates with a minimum noise level of 18 dBA. This low noise floor means you will likely not hear the fan during light tasks. The fan uses a Fluid Dynamic Bearing for smoother operation. Daily use is defined by stable power delivery. The unit offers a class-leading single +12V rail. This design ensures consistent voltage for your CPU and graphics card. Voltage regulation is strict at 3%. Ripple and noise levels are kept low. These specifications imply that your components receive clean power without significant fluctuations. The 80 PLUS Gold certification indicates high efficiency. This means less energy is wasted as heat during operation. The build uses all Japanese capacitors. This component choice supports long-term reliability. You can expect consistent performance under load. The compact size allows it to fit into cases where space is limited. Ensure your case supports the SFX standard for proper installation.
Before you buy this SFX unit
You need a case that explicitly supports the standard SFX form factor. The mounting holes for this SilverStone unit do not align with ATX power supply holes. Verify your chassis compatibility before purchasing. This 700W unit is fully modular, meaning you must source all cables separately. The listing notes flexible flat arrays for easier routing in tight spaces. You should also ensure your components draw less than 700W total. This rating provides headroom for high-end CPUs and graphics cards. The 92mm fan helps keep noise low during light loads. Keep the unit clean to maintain airflow. This option sits among other SFX choices by offering full modularity and high efficiency. It suits builders who need compact size without sacrificing cable management flexibility. Check your specific case dimensions to ensure the 4.92-inch length fits your build. This unit is not a universal fit for all small cases.
Check before you buy
- Verify your case supports standard SFX mounting holes.
- Confirm your total system power draw is under 700W.
- Ensure you have space for fully modular cables.
- Check that the 4.92-inch length fits your chassis.
The product at a glance
SilverStone 700W SFX 80 Plus Gold Power Supply
Best for: Small form factor high-power builds
- Wattage
- 700W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 4.92 × 3.94 × 2.5 inches
View on Amazon: SilverStone 700W SFX 80 Plus Gold Power Supply Affiliate link
This SilverStone unit delivers 700W of power in a compact SFX form factor. It features 80 PLUS Gold efficiency and a fully modular cable design. The 92mm fan operates quietly at 18 dBA. Japanese capacitors support stable voltage regulation. It suits users needing high performance in small cases. The flat cables aid airflow management.
Pros
- 700W output capacity
- 80 PLUS Gold efficiency rating
- Fully modular cable design
- Quiet 92mm FDB fan
- Japanese capacitors for stability
Cons
- SFX form factor limits ATX compatibility
- Heavier build at 3.09 pounds
- Compact dimensions may restrict cable routing
Good fit if
- You need high wattage in a small case
- You want efficient power delivery
- You prefer fully modular cables
Skip if
- You require an ATX form factor
- You need a larger fan for cooling
- You prefer a lighter power supply
Verdict: SilverStone 700W SFX Gold PSU offers robust power for small form factor builds. It fits users prioritizing efficiency and modularity in tight spaces.
Specifications side by side
| Spec | SilverStone 700W SFX 80 Plus Gold Power Supply |
|---|---|
| Wattage | 700W |
| Efficiency Rating | 80 PLUS Gold |
| Modularity | Fully Modular |
| Fan Size | 92mm |
| Form Factor | SFX |
| Dimensions | 4.92 × 3.94 × 2.5 inches |
| Weight | 3.09 pounds |
| Size | 700W |
| Color | Black?Lead-Free Paint? |
| Model | SST-SX700-G |
Frequently asked questions
Is the SilverStone 700W SFX fully modular?
Yes, this power supply is fully modular. This means you can detach all cables from the unit itself. You only need to connect the cables required for your specific build. This feature helps reduce clutter inside your case and improves airflow within your small form factor chassis.
What efficiency rating does this unit have?
The SilverStone SST-SX700-G carries an 80 Plus Gold efficiency rating. This certification indicates that the power supply converts AC power to DC power with high effectiveness at typical loads. Higher efficiency reduces wasted energy as heat. This helps keep your system cooler and more energy-efficient during operation.
What are the exact dimensions of the SilverStone 700W SFX?
The unit measures 3.94 inches in width, 2.5 inches in height, and 4.92 inches in length. It weighs 3.09 pounds. These dimensions conform to the standard SFX form factor. You must ensure your case supports this specific size, as it does not fit standard ATX mounting holes.
Can I use this power supply in a standard ATX case?
No, this unit is designed strictly for the SFX form factor. Its mounting holes do not align with standard ATX power supply holes. You must use a case that explicitly supports SFX power supplies. Attempting to force it into an ATX chassis will not work due to the physical size and hole placement.
Is the SilverStone 700W SFX suitable for high-end builds?
This unit delivers 700W of continuous power. This wattage is robust for small form factor builds. It provides sufficient headroom for high-performance CPUs and graphics cards. The 80 Plus Gold rating ensures efficient power delivery under heavy loads, making it a strong choice for demanding compact systems.
What is the model number for this SilverStone power supply?
The model number is SST-SX700-G. This identifier distinguishes it from other SilverStone products. You can use this code to verify compatibility with your case or to find technical documentation. It confirms you are looking at the 700W fully modular SFX unit with Gold efficiency.