Looking Beyond the SilverStone ST30SF V2 80 Plus? 6 Alternatives Worth a Look
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When planning a compact build, exploring silverstone st30sf v2 80 plus alternatives helps you find the right match for your hardware requirements. The SilverStone ST30SF V2 handles low-demand systems well by providing 300W of continuous power at 40°C, an 80 Plus Bronze efficiency level, and a single +12V rail. Its standard SFX dimensions and included ATX adapter bracket give you mounting flexibility in tight cases, while a 92mm fan keeps components cooled.
You might need something else if your components draw more power than 300W, or if you prefer modular cabling to reduce clutter inside your chassis. Other setups require higher efficiency tiers like 80 Plus Gold, standard ATX chassis dimensions, or different manufacturers such as Corsair and EVGA. This guide collects 6 options selected because their specifications overlap with the original unit, balancing compact footprints, varied wattage capacities, and shared efficiency standards for your build.
Our top pick: SilverStone 300W SFX Bronze Power Supply.
Comparing ST30SF V2 Alternative Power Supplies
SilverStone 450W SFX Bronze Power Supply
The SilverStone 450W SFX Bronze unit increases continuous power to 450W over the 300W rating of the ST30SF V2. It brings a single 36A +12V rail, which gives your internal components more electrical headroom. Both power supplies share the compact SFX form factor, bracket mounting flexibility, and 80 Plus Bronze efficiency. However, you give up the ultra-compact 4.92 by 2.5 by 3.94-inch dimensions of the original unit for a larger chassis profile. Pick this 450W alternative if your compact build demands extra continuous wattage without sacrificing the standard SFX layout or 80 Plus Bronze baseline.
Corsair CX-M Modular Power Supply
The Corsair CX-M Modular power supply introduces modular cabling, helping you keep internal clutter down compared to the fixed layout of the ST30SF V2. Both units deliver 80 Plus Bronze efficiency for everyday energy management. However, choosing the CX-M means accepting renewed hardware rather than a factory-fresh unit. You also give up the native SFX form factor, 92mm silent fan, and included ATX adapter bracket that make the 300W model suitable for small cases. Pick this Corsair model if you want cleaner cable routing in a standard setup and do not require a dedicated SFX chassis footprint.
EVGA SuperNOVA 750W Bronze Power Supply
The EVGA SuperNOVA 750W Bronze raises continuous capacity significantly, providing 750W alongside hybrid modular cabling, Japanese capacitors, and multi-rail power delivery. The ST30SF V2 maxes out at 300W on a single +12V rail. Both maintain an 80 Plus Bronze efficiency level. You give up the tiny SFX profile and lightweight footprint of the original 300W unit. The SuperNOVA measures 7.1 inches long, 5.9 inches wide, and 3.4 inches tall while weighing 7 pounds. Pick this EVGA unit if you are assembling a mid-to-high demand desktop inside a spacious ATX chassis and need substantial power headroom.
EVGA 650 BQ 650W Semi-Modular PSU
The EVGA 650 BQ upgrades your output to 650W, more than doubling the 300W limit of the ST30SF V2. It also adds semi-modular cabling, built-in electrical protections, and a 5-year warranty for longer manufacturer backing. Both power supplies run at 80 Plus Bronze efficiency. By switching, you give up the space-saving SFX standard and the included ATX mounting bracket. The 650 BQ uses standard ATX dimensions measuring 5.91 inches wide, 3.35 inches high, and 5.51 inches long, weighing 5 pounds. Pick this EVGA supply if your case fits regular ATX hardware and you want greater capacity with extended warranty coverage.
EVGA 500 BQ 500W Semi-Modular Power Supply
The EVGA 500 BQ provides 500W of power, offering 200W more headroom than the 300W ST30SF V2. It includes semi-modular cables to detach unnecessary leads and a larger 120mm fluid dynamic bearing fan compared to the 92mm fan on the SilverStone unit. Both power supplies carry an 80 Plus Bronze rating. What you sacrifice is the SFX chassis size and installation flexibility in compact cases. The EVGA measures 5.91 by 3.35 by 5.51 inches. Pick the 500 BQ if you are putting together a standard desktop system that fits ATX hardware and requires moderate wattage with organized cabling.
SilverStone 700W SFX 80 Plus Gold Power Supply
The SilverStone 700W SFX Gold unit offers a major upgrade in electrical specs while maintaining the same SFX dimensions. It provides 700W of output, fully modular cables, tight 3% voltage regulation, and higher 80 Plus Gold efficiency over the 300W Bronze rating of the ST30SF V2. Both models fit compact SFX enclosures, with this unit measuring 3.94 by 2.5 by 4.92 inches. You give up the simplicity of fixed wiring and the included ATX bracket. Choose this 700W Gold model if you are configuring a high-demand, small-form-factor machine that requires high power delivery, clean modular routing, and superior efficiency.
Quick picks
Our 7 picks
SilverStone 300W SFX Bronze Power Supply
Best for: low-power SFX and ATX compact builds
- Wattage
- 300W
- Efficiency Rating
- 80 Plus Bronze
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 3.94 × 4.92 × 2.5 inches
The SilverStone 300W SFX 80 Plus Bronze Power Supply gives you 300W of continuous power at a 40℃ operating temperature for 24/7 operation. Its compact SFX dimensions measure 4.92 inches wide, 2.5 inches high, and 3.94 inches deep. You also receive an included bracket to mount it into standard ATX cases. With 80 Plus Bronze efficiency and a 92mm fan, it suits you if you build low-draw, small-form-factor systems.
Pros
- Delivers 300W continuous output at 40℃ for 24/7 operation
- Includes bracket to support both SFX and ATX form factors
- 80 Plus Bronze certified for 82% to 85% efficiency
- Equipped with a 92mm silent running fan
Cons
- Limited to 300W maximum continuous output
- Efficiency reaches 80 Plus Bronze rather than higher tiers
Good fit if
- You need a compact SFX power supply with an included ATX adapter bracket.
- You run a low-power PC requiring no more than 300W continuous output.
Skip if
- You need more than 300W of continuous capacity for high-draw hardware.
- You want higher electrical efficiency ratings than 80 Plus Bronze.
Verdict: SilverStone 300W SFX 80 Plus Bronze Power Supply delivers steady continuous output for compact, low-demand builds. Its included bracket and 92mm fan provide practical installation options and cooling for SFX or ATX enclosures.
SilverStone 450W SFX Bronze Power Supply
Best for: compact builds needing 450W continuous power
- Wattage
- 450W
- Efficiency Rating
- 80 Plus Bronze
- Form Factor
- SFX
- Dimensions
- 9 × 7 × 4 inches
This SilverStone unit is an SFX power supply that delivers 450W of continuous output. If you are building a compact PC or need to fit a smaller power supply into an ATX case, the included bracket gives you mounting flexibility. It offers 80 Plus Bronze efficiency between 82% and 85% alongside a single +12V rail providing 36A. This model suits compact systems needing continuous 24/7 power.
Pros
- Supports SFX cases and ATX mounting via an included bracket
- Delivers 450W continuous output rated for 24/7 operation at 40℃
- Single +12V rail outputs up to 36A
- 80 Plus Bronze certified efficiency between 82% and 85%
Cons
- Maximum continuous output is limited to 450W
- Efficiency does not exceed the 85% Bronze threshold
Good fit if
- You need 450W of continuous output for a compact system
- You want an included bracket to install an SFX unit in an ATX chassis
- You require up to 36A on a single +12V rail
Skip if
- You need more than 450W of continuous power
- You require efficiency higher than 85%
Verdict: SilverStone 450W Bronze SFX Power Supply gives you 450W of continuous output and bracket flexibility for compact builds. Its single 36A +12V rail and 80 Plus Bronze rating satisfy standard lower-wattage system requirements.
Corsair CX-M Modular Power Supply
Best for: renewed modular PC power setups
- Efficiency Rating
- 80 Plus Bronze
- Modularity
- Modular
The Corsair CX-M modular power supply provides a renewed hardware option if you need modular cabling and certified efficiency. This unit delivers an 80 Plus Bronze rating to keep energy conversion standardized inside your PC case. Its modular design lets you attach only the cables you need for your components, reducing clutter. It fits your setup if you prioritize modular connections and Bronze-certified efficiency in a renewed package.
Pros
- Modular cable connectivity
- 80 Plus Bronze efficiency rating
- Standard black finish
Cons
- Renewed condition rather than brand new
- Efficiency limited to 80 Plus Bronze
Good fit if
- You need modular cabling to manage case clutter.
- You want an 80 Plus Bronze certified power supply.
- You are satisfied using renewed PC components.
Skip if
- You require factory-new hardware.
- You need an efficiency rating higher than 80 Plus Bronze.
Verdict: Corsair CX-M Modular PSU (Renewed) provides modular cable routing and 80 Plus Bronze efficiency for standard system builds. It works well if you accept renewed hardware to keep internal cabling organized.
EVGA SuperNOVA 750W Bronze Power Supply
Best for: roomy ATX builds requiring 750W power
- Wattage
- 750W
- Efficiency Rating
- 80PLUS Bronze
- Modularity
- Hybrid Modular
- Dimensions
- 7.1 × 5.9 × 3.4 inches
- Weight
- 7 pounds
This unit is an ATX power supply delivering 750W of continuous power with an 80 PLUS Bronze efficiency certification. You get a hybrid modular cable layout to manage clutter, Japanese capacitors, and a multi-rail setup with built-in electrical protections including OVP, UVP, OCP, OPP, SCP, and OTP. At 7.1 inches long, it suits you if your system demands higher output and your PC case has sufficient room for a full-size ATX enclosure.
Pros
- 750W output capacity with 80 PLUS Bronze certification
- Hybrid modular cabling reduces internal case clutter
- Japanese brand capacitors for component durability
- Full suite of protections: OVP, UVP, OCP, OPP, SCP, and OTP
- Quiet dual-ball bearing cooling fan
Cons
- 7.1-inch length requires substantial internal case clearance
- Hybrid modular layout leaves main cables permanently attached
- Efficiency rated at Bronze rather than Gold or higher
Good fit if
- You need 750W of power for higher-demand components.
- You have an ATX case with clearance for a 7.1-inch unit.
- You prefer detachable peripheral cables to minimize extra wire bulk.
Skip if
- You are building in a small-form-factor or SFX-only chassis.
- You require fully modular cabling where every lead detaches.
- You want efficiency higher than the 80 PLUS Bronze level.
Verdict: EVGA SuperNOVA 750W Hybrid Modular PSU provides high wattage, multi-rail power delivery, and Japanese capacitors for mid-to-high demand builds. Its 7.1-inch depth makes it best suited for spacious ATX enclosures rather than compact chassis.
EVGA 650 BQ 650W Semi-Modular PSU
Best for: builders needing ATX wattage with five-year coverage
- Wattage
- 650W
- Efficiency Rating
- 80+ Bronze
- Modularity
- Semi Modular
- Fan Size
- 140 millimeter
- Warranty
- 5 Year
- Dimensions
- 5.51 × 5.91 × 3.35 inches
The EVGA 650 BQ is a 650W power supply designed for standard desktop builds needing more headroom than compact units provide. It features an 80 Plus Bronze efficiency rating, semi-modular cable management, and a 140mm Teflon nano-steel bearing cooling fan. You also get a 5-year warranty and a bundled power-on self-tester. It suits you if you need a mid-wattage ATX unit with built-in hardware protections like OVP, UVP, and OCP.
Pros
- 5-year warranty coverage
- 650W continuous output with 80 Plus Bronze efficiency
- Semi-modular cabling design
- Large 140mm Teflon nano-steel bearing cooling fan
- Includes a power-on self-tester in the box
Cons
- Semi-modular rather than fully modular design
- Standard ATX physical dimensions, not compact SFX
- 80 Plus Bronze rating rather than Gold or higher
Good fit if
- You want a 5-year warranty on a 650W power supply.
- You prefer semi-modular cables to reduce chassis clutter.
- You have clearance for a standard ATX power supply rather than SFX.
Skip if
- You need an SFX form factor supply for a small form factor case.
- You require a fully modular cable layout.
- You want higher energy efficiency than 80 Plus Bronze.
Verdict: EVGA 650 BQ 650W Semi-Modular Power Supply delivers solid mid-range wattage with a 5-year warranty and semi-modular convenience. It is a practical alternative if your case fits standard ATX hardware and you want built-in electrical protections.
EVGA 500 BQ 500W Semi-Modular Power Supply
Best for: 500W standard ATX desktop builds
- Wattage
- 500W
- Efficiency Rating
- 80+ Bronze
- Modularity
- Semi Modular
- Fan Size
- 120 millimeter
- Warranty
- 3 Year
- Dimensions
- 5.51 × 5.91 × 3.35 inches
The EVGA 500 BQ provides 500 watts of continuous power with 80 Plus Bronze efficiency, reaching at least 85% efficiency under typical loads. It uses a semi-modular cable layout that lets you disconnect unused peripheral cables to clean up your chassis interior. Cooling is handled by an intelligent 120mm fluid dynamic bearing fan. This unit suits you if you need moderate wattage for standard desktop builds requiring standard ATX dimensions.
Pros
- 80 Plus Bronze certified for at least 85% typical efficiency
- Semi-modular cabling reduces clutter in your case
- 120mm fluid dynamic bearing fan for cooling
- Includes OVP, UVP, OCP, OPP, and SCP protections
Cons
- Semi-modular design leaves core cables permanently attached
- Standard ATX dimensions do not fit compact SFX-only chassis
- 3-year warranty is shorter than higher-tier alternatives
Good fit if
- You need a 500W power supply for a standard ATX enclosure.
- You want semi-modular cabling to leave unused auxiliary wires out of your case.
- You require built-in protections including OVP, UVP, OCP, OPP, and SCP.
Skip if
- You need a compact SFX power supply for a small form factor build.
- You require a fully modular cable setup where every cable detaches.
Verdict: EVGA 500 BQ 500W Semi-Modular PSU delivers 500W of 80 Plus Bronze power with a 120mm fluid dynamic bearing fan and semi-modular cabling. It is a solid standard-size desktop option if you do not need an ultra-compact SFX unit.
SilverStone 700W SFX 80 Plus Gold Power Supply
Best for: high-wattage compact SFX PC 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
This SilverStone unit is a compact SFX power supply delivering 700 watts of output with 80 PLUS Gold efficiency. It features fully modular flat cables, all Japanese capacitors, and a 92mm fluid dynamic bearing fan. You get tight 3% voltage regulation on a single +12V rail. This power supply suits you if you need high wattage and clean cable management inside a space-constrained small-form-factor PC enclosure.
Pros
- 80 PLUS Gold certified efficiency
- Fully modular design with flexible flat cables
- 700W capacity in a standard SFX chassis
- All Japanese capacitors and 3% voltage regulation
Cons
- Not compatible with ATX mounting holes
- No fan shutoff mode listed (18 dBA minimum)
Good fit if
- You need 700W of power for high-demand hardware in an SFX enclosure.
- You want 80 PLUS Gold efficiency with fully modular cabling.
- You prefer flexible flat cables for tight chassis routing.
Skip if
- You need native compatibility with standard ATX mounting holes.
- You want zero fan noise at idle.
Verdict: SilverStone 700W SFX Gold Power Supply delivers high output and 80 PLUS Gold efficiency in a standard SFX footprint. It provides fully modular cabling and tight 3% voltage regulation for compact systems.
Specifications side by side
| Spec | SilverStone 300W SFX Bronze Power Supply | SilverStone 450W SFX Bronze Power Supply | Corsair CX-M Modular Power Supply | EVGA SuperNOVA 750W Bronze Power Supply | EVGA 650 BQ 650W Semi-Modular PSU | EVGA 500 BQ 500W Semi-Modular Power Supply | SilverStone 700W SFX 80 Plus Gold Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 300W | 450W | not specified | 750W | 650W | 500W | 700W |
| Efficiency Rating | 80 Plus Bronze | 80 Plus Bronze | 80 Plus Bronze | 80PLUS Bronze | 80+ Bronze | 80+ Bronze | 80 PLUS Gold |
| Modularity | not specified | not specified | Modular | Hybrid Modular | Semi Modular | Semi Modular | Fully Modular |
| Fan Size | 92mm | not specified | not specified | not specified | 140 millimeter | 120 millimeter | 92mm |
| Warranty | not specified | not specified | not specified | not specified | 5 Year | 3 Year | not specified |
| Form Factor | SFX | SFX | not specified | not specified | not specified | not specified | SFX |
| Size | 300W V2 | 450W | not specified | not specified | 650W | 500W | 700W |
| Dimensions | 3.94 × 4.92 × 2.5 inches | 9 × 7 × 4 inches | not specified | 7.1 × 5.9 × 3.4 inches | 5.51 × 5.91 × 3.35 inches | 5.51 × 5.91 × 3.35 inches | 4.92 × 3.94 × 2.5 inches |
| Weight | not specified | not specified | not specified | 7 pounds | 5 pounds | 1.1 pounds | 3.09 pounds |
| Model | SST-ST30SF V2 | SST-ST45SF-V3-USA | not specified | 120-PB-0750-KR | 110-BQ-0650-V1 | 110-BQ-0500-K1 | SST-SX700-G |
| Color | not specified | not specified | not specified | Black | not specified | not specified | Black?Lead-Free Paint? |
If you need CPU cooling alongside your power supply, you can compare silverstone sst ar08 v2 alternatives by physical dimensions.
Frequently asked questions
Which alternative provides the highest wattage in the compact SFX form factor?
The SilverStone 700W SFX (SST-SX700-G) offers the highest output among the compact SFX alternatives at 700W. It features 80 Plus Gold efficiency and fully modular cabling, measuring 3.94 inches wide, 2.5 inches high, and 4.92 inches long. This gives you substantial capacity for demanding components while maintaining a small-form-factor footprint.
Can you use a standard ATX power supply as an alternative to the SilverStone ST30SF V2?
You can use standard ATX units if your computer case provides sufficient space. The EVGA 500 BQ and EVGA 650 BQ both measure 5.91 inches wide, 3.35 inches high, and 5.51 inches long. While the ST30SF V2 is built for compact SFX layouts, these larger ATX options offer semi-modular cabling and 80 Plus Bronze efficiency for standard desktop cases.
Which alternative models offer modular cable management?
Several options provide modular setups to reduce interior cable clutter. The SilverStone 700W Gold model features fully modular cabling. If you prefer semi-modular connections, the EVGA 500 BQ and EVGA 650 BQ allow you to detach unnecessary peripheral lines. The Corsair CX-M also features modular cabling alongside an 80 Plus Bronze efficiency rating for cleaner cable routing inside your PC build.
What is the largest ATX power supply option on this list of alternatives?
The EVGA SuperNOVA 750W Bronze is the largest option featured, with a length of 7.1 inches, width of 5.9 inches, and height of 3.4 inches. Weighing 7 pounds, it delivers 750W of power with Japanese capacitors and 80 Plus Bronze efficiency. Its extended depth requires a roomy ATX chassis rather than a small SFX enclosure.
Which alternative offers higher efficiency than 80 Plus Bronze?
The SilverStone 700W SFX is the only alternative on this list that reaches an 80 Plus Gold rating. The ST30SF V2 and most other alternatives, including the EVGA BQ series and Corsair CX-M, carry 80 Plus Bronze ratings. The 700W Gold model also includes tight 3% voltage regulation and full modularity in a standard SFX frame.
How do the physical dimensions of the SilverStone 700W SFX compare to the ST30SF V2?
Both models share standard SFX chassis dimensions. The SilverStone ST30SF V2 measures 4.92 inches wide, 2.5 inches high, and 3.94 inches long. The SilverStone 700W SFX matches these profile measurements closely at 3.94 inches wide, 2.5 inches high, and 4.92 inches long. This shared form factor allows you to upgrade your power capacity to 700W without needing a larger enclosure.