Best SilverStone 80 Plus Gold PC Power Supplies in 2026: 7 Picks
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You need the best SilverStone 80 Plus Gold PC power supplies for efficient, reliable builds. We compared 7 models using only their published specifications. The SilverStone 700W SFX 80 Plus Gold Power Supply leads because its 700W output fits high-wattage small-form-factor PC builds. All picks are ranked strictly by data like wattage, form factor, and modularity. This guide helps you decide which unit matches your case size and power needs without guesswork.
Quick picks
The best fit for you
- You need high wattage for a compact SFX build SilverStone 700W SFX 80 Plus Gold Power Supply Its 700W capacity and fully modular cabling fit space-constrained small-form-factor systems.
- You build a continuous-duty Flex ATX system SilverStone 500W Flex ATX Power Supply It supplies 500W of continuous 80 Plus Gold power in the Flex ATX form factor.
- You require Gold efficiency for a TFX desktop case SilverStone 500W Gold TFX Power Supply It delivers 500W of 80 Plus Gold output in a dedicated TFX form factor.
- You need maximum wattage in an SFX build SilverStone 750W Gold SFX Power Supply It delivers 750W of fully modular 80 Plus Gold power inside a compact SFX profile.
Our 7 picks
SilverStone 700W SFX 80 Plus Gold Power Supply
Best for: high-wattage small-form-factor PC builds
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 700W
- 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 unit delivers 700W of power in a compact SFX form factor with 80 Plus Gold efficiency. It features fully modular flexible flat cables, all Japanese capacitors, and a single +12V rail with 3% voltage regulation. A 92mm FDB fan provides cooling starting at 18 dBA. It suits you if you are assembling a compact small-form-factor PC that demands high wattage without extra cable clutter.
Pros
- 700W output with 80 Plus Gold efficiency
- Fully modular design with flexible flat cables
- All Japanese capacitors and 3% voltage regulation
- 92mm FDB cooling fan rated down to 18 dBA
Cons
- Not compatible with standard ATX mounting holes
- Fan operates at a minimum noise floor of 18 dBA rather than zero RPM
Good fit if
- You need 700W of power for a small-form-factor SFX build.
- You want fully modular flat cables to simplify routing in tight spaces.
- You require strict 3% voltage regulation on a single +12V rail.
Skip if
- You need a power supply compatible with standard ATX case mounting holes.
- You require a completely silent fanless mode under low loads.
Verdict: SilverStone 700W Fully Modular SFX Power Supply delivers dependable Gold-rated efficiency and high wattage for small-form-factor enclosures. Its compact size and detachable flat cables make it an ideal backbone for space-constrained desktop builds.
SilverStone 500W Flex ATX Power Supply
Best for: compact 24/7 Flex ATX builds
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 500W
- Form Factor
- Flex ATX
- Dimensions
- 5.91 × 3.21 × 1.59 inches
- Weight
- 2.87 pounds
View on Amazon: SilverStone 500W Flex ATX Power Supply Affiliate link
The SilverStone 500W Flex ATX Power Supply delivers continuous 500W output with an 80 Plus Gold efficiency certification. Built for compact enclosures, it features a single +12V rail and a Japanese primary capacitor rated for continuous 24/7 operation at 40℃. You will find it well suited if you need reliable power delivery in an ultra-compact chassis where larger units do not fit.
Pros
- 80 Plus Gold efficiency rating
- Continuous 500W output at 40℃ rated for 24/7 operation
- Japanese primary capacitor
- Single +12V rail design
Cons
- Flex ATX form factor limits installation to specialized compact cases
- 500W maximum capacity restricts high-draw hardware configurations
Good fit if
- You build inside a chassis that requires the slim Flex ATX form factor.
- You need 500W of continuous power certified for 24/7 operation at 40℃.
- You want 80 Plus Gold efficiency in a 1.59-inch tall unit.
Skip if
- You require more than 500W for higher-power components.
- You have a standard case designed for standard ATX or SFX units.
Verdict: SilverStone 500W Flex ATX Power Supply provides 80 Plus Gold efficiency and continuous 500W output for specialized small-form-factor systems. It is an effective option when your build requires 24/7 operation within the Flex ATX standard.
SilverStone 500W Gold TFX Power Supply
Best for: compact TFX small-form-factor desktop PCs
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 500W
- Modularity
- Fixed Cable
- Fan Size
- 80mm
- Form Factor
- TFX
- Dimensions
- 6.9 × 3.4 × 2.6 inches
View on Amazon: SilverStone 500W Gold TFX Power Supply Affiliate link
The SilverStone 500W Gold TFX Power Supply provides continuous 500-watt output in a slim TFX form factor. You get 80 Plus Gold efficiency, delivering stable power rated for 24/7 operation at 50°C. An integrated 80mm cooling fan operates down to 18 dBA to keep noise low. This unit suits you if you need a compact, high-efficiency power source for a slimline or small-form-factor desktop case.
Pros
- 80 Plus Gold certified efficiency
- 500W continuous output at 50°C rated for 24/7 operation
- Silent 80mm fan operating down to 18 dBA minimum
- Built-in multiple protection circuitry
Cons
- Fixed cables cannot be removed
- 500W output limits high-draw hardware configurations
Good fit if
- You need a dedicated power supply for a standard TFX chassis.
- You run systems continuously in operating temperatures up to 50°C.
Skip if
- You require modular cables for simplified cable management.
- You build a high-demand PC requiring more than 500W of power.
Verdict: SilverStone 500W Gold TFX Power Supply delivers certified Gold efficiency and continuous 24/7 output for compact systems. It provides reliable small-form-factor power if you do not need modular cables.
SilverStone 750W Gold SFX Power Supply
Best for: compact small-form-factor high-power PC builds
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 750W
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 3.94 × 4.92 × 2.5 inches
View on Amazon: SilverStone 750W Gold SFX Power Supply Affiliate link
This SilverStone unit delivers 750W of continuous power in a compact SFX form factor. It carries an 80 Plus Gold efficiency certification and features a fully modular cable design with flexible flat arrays. Inside, it uses all Japanese electrolytic capacitors and runs on a single +12V rail with ±3% voltage regulation. It suits you if you build a small-form-factor PC requiring high wattage.
Pros
- 750W output in a standard SFX form factor
- 100% modular flat flexible cable design
- All Japanese electrolytic capacitors on a single +12V rail
- Strict ±3% voltage regulation with low ripple and noise
Cons
- 92mm fan size constrained by compact SFX housing
- No ATX mounting bracket listed in specifications
- No zero-RPM fan mode listed
Good fit if
- You need 750W of power inside a small-form-factor SFX enclosure.
- You want fully modular flat cables to streamline cable routing in tight spaces.
- You prioritize Japanese electrolytic capacitors and tight voltage regulation.
Skip if
- You require a standard full-size ATX power supply.
- You only need lower capacity, such as 350W to 500W, for basic systems.
Verdict: SilverStone 750W SFX Fully Modular PSU provides 750W of Gold-rated power in a space-saving SFX profile. Its modular flat cables and tight voltage regulation fit compact systems with high power demands.
SilverStone DA850R Gold 850W ATX
Best for: Standard ATX cases with white themes
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 850W
- ATX Version
- ATX 3.0
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 120mm
- Dimensions
- 5.51 × 5.91 × 3.39 inches
View on Amazon: SilverStone DA850R Gold 850W ATX Affiliate link
The SilverStone DA850R Gold is an 850W ATX 3.0 power supply designed for high-performance builds. It features a white casing and meets the PCIe 5.0 standard with a Gen5 12V-2x6 connector. This unit supports 2x power excursion and operates at 50℃. It includes a 120mm fan with semi-fanless operation. It suits users needing reliable 24/7 continuous power output in a standard ATX form factor.
Pros
- 850W power output capacity
- ATX 3.0 and PCIe 5.0 compatibility
- White casing and fan design
- Semi-fanless operation with 120mm fan
Cons
- Lower 850W wattage compared to higher-tier options
- Larger physical dimensions than SFX or TFX units
Good fit if
- You need ATX 3.0 compatibility for new GPUs
- You prefer a white aesthetic for your build
- You require 850W for high-end components
Skip if
- You are building in a small form factor case
- You need more than 850W of power
- You prefer a black color scheme
Verdict: SilverStone DA850R Gold 850W ATX is a solid choice for builders needing ATX 3.0 support and a white aesthetic. It fits standard mid-tower cases well but is too large for compact builds.
SilverStone 400W TFX Power Supply
Best for: compact TFX systems running continuous workloads
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 400W
- PCIe Connector Type
- 6+2pin
- Fan Size
- 80mm
- Form Factor
- TFX
- Dimensions
- 6.9 × 3.4 × 2.6 inches
View on Amazon: SilverStone 400W TFX Power Supply Affiliate link
The SilverStone 400W TFX Power Supply delivers 400W of continuous power in a standard TFX form factor. It carries an 80 Plus Gold efficiency certification and is rated for continuous 24/7 operation at a 40°C operating temperature. Cooling relies on an 80mm fan with an 18 dBA minimum noise level. This unit fits slim chassis when you need dedicated power for a single PCI-E 6+2pin graphics card.
Pros
- 80 Plus Gold efficiency certification
- Continuous 400W power output rated for 24/7 operation at 40°C
- Silent 80mm fan with 18 dBA minimum rating
- Includes a PCI-E 6+2pin connector for discrete graphics
Cons
- Limited to a single PCI-E 6+2pin connector
- Total continuous output restricted to 400W
Good fit if
- You need a standard TFX power supply for a compact or low-profile PC case.
- You require continuous 24/7 operation at operating temperatures up to 40°C.
- You run a discrete graphics card that requires only one 6+2pin PCI-E cable.
Skip if
- You need more than 400W of total system power.
- You require multiple PCI-E power cables for high-demand components.
Verdict: SilverStone 400W TFX Power Supply provides continuous 24/7 Gold-certified power in a standardized TFX layout. It suits compact, lower-wattage builds that require quiet cooling and a single PCI-E 6+2pin connection.
SilverStone 500W SFX Fully Modular Power Supply
Best for: compact 500W small-form-factor PC builds
- Efficiency Rating
- 80 Plus Gold (what this guide is about)
- Wattage
- 500W
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 3.94 × 4.92 × 2.5 inches
View on Amazon: SilverStone 500W SFX Fully Modular Power Supply Affiliate link
This SilverStone unit delivers 500 watts of power in a compact SFX form factor with 80 Plus Gold efficiency. You get fully modular flat cables that simplify routing inside tight enclosures, alongside a 92mm cooling fan rated down to 18 dBA. Built with all Japanese capacitors and strict 3 percent voltage regulation, it suits you if you need reliable, clean power for a compact small-form-factor desktop build.
Pros
- 80 Plus Gold certified efficiency
- 100% modular flexible flat cables
- All Japanese capacitors
- 92mm fan with 18 dBA minimum noise level
Cons
- 500W output limits high-power graphics card choices
- Minimum noise floor remains at 18 dBA without passive fan-stop mode
Good fit if
- You need a compact SFX power supply with fully modular flat cabling.
- You build a small-form-factor desktop operating within a 500W limit.
- You require Japanese capacitors and strict 3 percent voltage regulation.
Skip if
- You run high-draw PC components requiring more than 500 watts.
- You need a Flex ATX or TFX form factor rather than standard SFX.
Verdict: SilverStone 500W SFX Fully Modular PSU provides 80 Plus Gold efficiency and Japanese internal capacitors inside a compact SFX footprint. It offers a dependable, low-noise power delivery system for mid-tier small-form-factor PC builds.
Specifications side by side
| Spec | SilverStone 700W SFX 80 Plus Gold Power Supply | SilverStone 500W Flex ATX Power Supply | SilverStone 500W Gold TFX Power Supply | SilverStone 750W Gold SFX Power Supply | SilverStone DA850R Gold 850W ATX | SilverStone 400W TFX Power Supply | SilverStone 500W SFX Fully Modular Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 700W | 500W | 500W | 750W | 850W | 400W | 500W |
| Efficiency Rating | 80 PLUS Gold | 80 PLUS Gold | 80 PLUS Gold | 80 Plus Gold | 80 PLUS Gold | 80 PLUS Gold | 80 PLUS Gold |
| Modularity | Fully Modular | not stated | Fixed Cable | Fully Modular | not stated | not stated | Fully Modular |
| ATX Version | not stated | not stated | not stated | not stated | ATX 3.0 | not stated | not stated |
| PCIe Connector Type | not stated | not stated | not stated | not stated | 12V-2x6 | 6+2pin | not stated |
| Fan Size | 92mm | not stated | 80mm | 92mm | 120mm | 80mm | 92mm |
| Form Factor | SFX | Flex ATX | TFX | SFX | ATX | TFX | SFX |
| Size | 700W | 500W | 500W | 750W | 850W | 400W | 500W |
| Dimensions | 4.92 × 3.94 × 2.5 inches | 5.91 × 3.21 × 1.59 inches | 6.9 × 3.4 × 2.6 inches | 3.94 × 4.92 × 2.5 inches | 5.51 × 5.91 × 3.39 inches | 6.9 × 3.4 × 2.6 inches | 3.94 × 4.92 × 2.5 inches |
| Weight | 3.09 pounds | 2.87 pounds | not stated | 4.45 pounds | not stated | not stated | 4.17 pounds |
| Color | Black?Lead-Free Paint? | not stated | black (lead-free paint) | not stated | White | black (lead-free paint) | not stated |
| Model | SST-SX700-G | not stated | SST-TX500-G | not stated | SST-AX0850MCGD-D | SST-TX400-G | not stated |
If you plan your enclosure clearance, review asus a31 plus black atx PC case alternatives to confirm component fit.
Choosing a SilverStone Gold Power Supply
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Calculate System Wattage
Calculate the combined power draw of your processor and graphics card before selecting a wattage tier. Compact configurations with high-draw components demand higher headroom to sustain peak loads smoothly. The SilverStone 750W Gold SFX Power Supply accommodates power-hungry hardware while keeping tight voltage regulation. For standard desktop builds with modest hardware, a lower rating between 350W and 500W prevents overspending on unused output. Review the continuous output specifications of your components to ensure your selected wattage sustains full operating loads without tripping internal protections.
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Check Continuous Duty Ratings
Identify whether your system requires nonstop operation or standard desktop cycling. Units engineered for continuous 24/7 duty run reliably in always-on environments like home servers and network appliances. The SilverStone 500W Flex ATX Power Supply delivers continuous 500W output for specialized hardware configurations that do not shut down. Check the manufacturer specifications for continuous power delivery instead of peak ratings. Choosing a supply rated for 24/7 output prevents hardware degradation caused by heat accumulation during prolonged operational cycles under persistent workloads.
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Verify Graphics Connector Counts
Confirm the exact power inputs your expansion cards require before you purchase a supply. Dedicated graphics cards frequently require auxiliary 6-pin or 8-pin PCI-E connections directly from the power unit. The SilverStone 400W TFX Power Supply includes a single PCI-E 6+2pin connection suited for compact cards with moderate power draw. If your card requires dual power inputs, verify that your chosen model supplies sufficient dedicated leads without splitters. Matching connector counts directly prevents stability issues and avoids incompatible wiring adapters inside compact enclosures.
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Inspect Internal Capacitor Quality
Examine the internal component specifications to assess expected lifespan and electrical stability. Power supplies built with Japanese internal capacitors handle electrical stress and heat with greater durability over extended deployment. The SilverStone 500W SFX Fully Modular Power Supply incorporates Japanese internal capacitors to support reliable power delivery and low electrical noise. Check the published component details for capacitor origin when choosing a unit for tight spaces where heat dissipation is limited. High-grade capacitors maintain clean output voltages even in confined enclosures.
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Measure Chassis Depth Clearance
Measure your internal mounting bracket and depth clearance before committing to a specific form factor. Although standard form factors like Flex ATX and TFX share exterior widths, body length varies significantly across models. For instance, the SilverStone 350W Gold Flex ATX PSU measures 6 inches in length, requiring adequate clearance in front of the unit for fixed wiring bundles. Check the published length and width measurements against your chassis layout. Ensuring sufficient clearance prevents bent cables and keeps internal ventilation passages unobstructed.
Frequently asked questions
How do the dimensions of SilverStone SFX, TFX, and Flex ATX power supplies compare?
Form factor determines the enclosure dimensions you must accommodate. SilverStone SFX supplies measure roughly 4.92 by 3.94 by 2.5 inches. Flex ATX units are narrower and shallower, measuring around 3.2 to 3.3 inches wide and 1.6 inches high. TFX power supplies adopt an elongated profile, measuring 3.4 inches wide, 2.6 inches high, and 6.9 inches long.
Which SilverStone 80 Plus Gold models feature fully modular cables?
SilverStone equips its SFX models with fully modular flat cabling. Units like the 700W SST-SX700-G, the 750W SFX model, and the 500W SFX model allow you to detach unneeded cables completely. In contrast, the Flex ATX and TFX options, such as the SST-TX500-G and SST-FX350-G-VT, utilize fixed wire harnesses suited for compact specialized cases.
What is the highest wattage SilverStone 80 Plus Gold power supply on this list?
The highest-capacity unit in this selection is the SilverStone 750W Gold SFX power supply. It provides 750W of continuous output alongside fully modular flat cables and tight voltage regulation. If your system requires slightly less power headroom, the 700W SST-SX700-G serves as the next highest wattage option within the same compact SFX form factor.
Are SilverStone Flex ATX and TFX power supplies rated for continuous operation?
Yes, SilverStone specifies continuous 24/7 output ratings across its Flex ATX and TFX models. The 500W Flex ATX, 350W SST-FX350-G-VT, 500W SST-TX500-G, and 400W SST-TX400-G are engineered to support constant power delivery. This continuous capability makes them suitable for always-on 1U server racks, compact office workstations, and dedicated home servers.
What type of internal capacitors does the SilverStone 500W SFX supply use?
The SilverStone 500W SFX Fully Modular Power Supply utilizes Japanese internal capacitors. These components support consistent power delivery and low electrical noise within a compact SFX casing measuring 4.92 by 2.50 by 3.94 inches. The unit also features an 80 Plus Gold rating and modular cabling to streamline small-form-factor cable routing.
Does the SilverStone 400W TFX power supply include dedicated PCI-E power connectors?
The SilverStone 400W TFX Power Supply includes a single PCI-E 6+2-pin connector for discrete components. This wiring allows you to power a dedicated entry-level graphics card inside a slim chassis. The unit delivers continuous 24/7 power at 80 Plus Gold efficiency within a standardized 6.9-inch-long TFX casing.