Be Quiet! SFX L 600W Gold Alternatives: 6 Similar Picks Compared
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You might be looking for be quiet sfx l quiet performance alternatives if you need a different form factor or wattage. The original be quiet! SFX L 600W Gold is a solid choice for Mini ITX gaming builds. It offers 80 Plus Gold efficiency and a 120mm fan for quiet operation. However, its small size limits power output. You may need more watts or a standard ATX shape for a larger case.
This list covers 6 similar power supplies. We selected these options because their specifications overlap with the original. Some provide higher wattage for modern graphics cards. Others offer different connector standards like ATX 3.0 or 3.1. You can compare their sizes, modularity, and efficiency ratings here. Each pick serves a specific build need. You can find a unit that fits your case dimensions and power requirements.
Our top pick: be quiet! SFX L 600W Gold Modular Power Supply.
Comparing SFX L 600W Alternatives
FSP 300W Flex ATX Power Supply
The FSP 300W Flex ATX is significantly smaller than the be quiet! SFX L, measuring just 3.2 by 1.6 inches. It shares the 80 Plus Gold efficiency rating, ensuring low heat and noise for quiet systems. However, you lose half the wattage, limiting this unit to low-power Mini ITX builds. It is ideal if your case has extreme space constraints and your components draw less than 300 watts. The be quiet! model remains better for gaming rigs needing higher stable power output.
GAMEMAX 1050W ARGB Fully Modular PSU
The GAMEMAX 1050W ARGB shifts from Mini ITX to standard ATX form factor, offering vastly more power for high-end gaming. It features ATX 3.0 support and fully modular cables, matching the be quiet! modularity but in a larger chassis. You gain 450 extra watts and RGB lighting, but sacrifice compactness entirely. This unit fits standard desktop cases, not small form factor boxes. Choose this if you prioritize raw gaming performance and modern connector standards over the space-saving benefits of the original SFX L design.
GAMEMAX 1050W ATX 3.0 ARGB Power Supply
This GAMEMAX 1050W ATX 3.0 unit provides high wattage and a 10-year warranty, extending coverage beyond the original three-year term. It supports modern PCIe connections for next-gen graphics cards, which the SFX L lacks. The trade-off is size; it is a standard ATX unit, not a compact SFX. It is best for users with large cases who need robust power for gaming without worrying about space. The be quiet! SFX L remains the choice for tight builds where this large unit simply will not fit.
MSI MAG 1000W Gold Modular Power Supply
The MSI MAG 1000W Gold offers ATX 3.1 and PCIe 5.1 support with a 12V-2x6 connector, updating the connectivity standards found in the original. It delivers 400 more watts than the be quiet! unit, suitable for high-performance large case builds. You get a 10-year warranty, doubling the original coverage. However, it is a standard ATX size, making it incompatible with Mini ITX cases. Pick this if you need maximum power and modern connectors in a spacious desktop case rather than a compact system.
ASRock Phantom Gaming 1300W ATX 3.1 PSU
The ASRock 1300W ATX 3.1 PSU provides the highest wattage in this comparison, offering 700 watts more than the be quiet! SFX L. It includes a 12V-2x6 connector for modern GPUs and fits standard ATX cases. The efficiency remains at 80 Plus Gold. You give up compactness entirely for raw power capacity. This unit is ideal for high-end workstations or gaming rigs with multiple graphics cards. If you need a small form factor, the original is the only viable option here.
MSI 1000W Fully Modular Gold PSU
The MSI MPG A1000GS ATX 3.1 delivers 1000 watts with PCIe 5.1 support and a 12V-2x6 connector, exceeding the be quiet! power output significantly. It includes a 10-year warranty, providing longer peace of mind than the original three-year term. This is a standard ATX unit, so it does not fit Mini ITX cases. It is designed for users who need high wattage and the latest connector standards in a full-size desktop build. Choose the original if your priority is compact size and silence.
Quick picks
Our 7 picks
be quiet! SFX L 600W Gold Modular Power Supply
Best for: quiet Mini ITX gaming builds
- Wattage
- 600W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Modular
- Fan Size
- 120mm
- Warranty
- 3-Year
- Form Factor
- Mini ITX
View on Amazon: be quiet! SFX L 600W Gold Modular Power Supply
This is a 600W SFX-L power supply with 80 PLUS Gold efficiency. It features a 120mm fan for quiet operation and modular cables for clean builds. The unit supports multi-GPU setups and includes an adapter bracket for larger cases. It suits Mini ITX gamers who need reliable power without excessive noise.
Pros
- 80 PLUS Gold efficiency up to 92%
- 120mm temperature-controlled fan for low noise
- Fully modular cables for build flexibility
- Includes SFX-to-ATX adapter bracket
Cons
- 600W output is lower than high-end alternatives
- 3-year warranty is shorter than 10-year options
- SFX-L form factor may not fit all small cases
Good fit if
- You need quiet operation in a Mini ITX build
- You want 80 PLUS Gold efficiency
- You are building a multi-GPU system
Skip if
- You require more than 600W of power
- You need a standard ATX form factor
- You want a 10-year warranty
Verdict: be quiet! SFX L 600W Gold is a quiet, efficient choice for Mini ITX systems that do not demand extreme wattage.
FSP 300W Flex ATX Power Supply
Best for: low-power Mini ITX systems
- Wattage
- 300W
- Efficiency Rating
- 80Plus Gold
- Fan Size
- 40mm
- Form Factor
- Mini ITX
- Dimensions
- 5.9 × 3.2 × 1.6 inches
- Weight
- 1.8 pounds
This FSP unit delivers 300 watts of power with 80 Plus Gold efficiency. It uses a 40mm ball-bearing fan for low-noise operation. The compact dimensions of 3.2 by 1.6 by 5.9 inches fit Mini ITX builds. It includes standard protections like over-voltage safety. This model suits small form factor PCs that require quiet, efficient power.
Pros
- 80 Plus Gold efficiency rating
- Compact Mini ITX form factor
- 40mm ball-bearing fan for low noise
- Over-voltage protection included
Cons
- Only 300W output limits high-power components
- Small 40mm fan may spin faster under load
- Not suitable for gaming rigs with discrete GPUs
Good fit if
- You build a Mini ITX office PC
- You need ultra-quiet operation for media centers
- You have low power requirements under 300W
Skip if
- You require more than 300W of power
- You use a high-end graphics card
- You need an ATX standard size
Verdict: FSP 300W Mini ITX Gold PSU is a compact, efficient choice for small builds with modest power needs. It fits Mini ITX cases where space is tight and silence matters.
GAMEMAX 1050W ARGB Fully Modular PSU
Best for: High-power standard ATX gaming builds
- Wattage
- 1050W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.0
- PCIe Connector Type
- 12VHPWR 16pin
- Fan Size
- 140mm
This GAMEMAX unit delivers 1050W of power with 80 Plus Gold efficiency. It supports ATX 3.0 and PCIe 5.0 standards, featuring a 12VHPWR connector for modern graphics cards. The fully modular design helps manage cable clutter. A 140mm fan ensures quiet operation. The included ARGB lighting syncs with motherboard software. This high-wattage supply suits gamers needing robust power for high-end components.
Pros
- 1050W output capacity
- 80 Plus Gold efficiency rating
- ATX 3.0 and PCIe 5.0 ready
- 12VHPWR 16-pin connector included
- 140mm whisper-quiet fan
Cons
- Standard ATX form factor is large for small cases
- ARGB lighting may not suit minimalist builds
- 3.53 pounds weight adds bulk
Good fit if
- You need high wattage for a powerful GPU
- You want PCIe 5.0 native support
- You prefer fully modular cabling
Skip if
- You are building a small form factor PC
- You require a silent fanless design
- You need a compact SFX power supply
Verdict: GAMEMAX 1050W ATX 3.0 Gold PSU is a high-capacity choice for standard desktop cases. It fits users prioritizing raw power and modern connector support over compact size.
GAMEMAX 1050W ATX 3.0 ARGB Power Supply
Best for: High-power gaming builds with ATX cases
- Wattage
- 1050W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.0
- PCIe Connector Type
- 12VHPWR 16pin
- Fan Size
- 140mm
This is a 1050W ATX 3.0 power supply with 80 Plus Gold efficiency. It includes a 12VHPWR 16-pin connector for high-end graphics cards. The unit features a 140mm fan and fully modular cables. You get RGB lighting sync with motherboards. It suits gamers needing high wattage and modern PCIe 5.0 support in a standard ATX form factor.
Pros
- 1050W output with 80 Plus Gold efficiency
- ATX 3.0 and PCIe 5.0 ready with 12VHPWR connector
- Fully modular cable design
- 10-year warranty coverage
- 140mm fan for quiet operation
Cons
- Large 11.4-inch length may not fit small cases
- Standard ATX form factor is not compact
- RGB lighting may not suit minimal builds
Good fit if
- You need high wattage for modern GPUs
- You want PCIe 5.0 native support
- You have a standard ATX case
Skip if
- You require a compact SFX power supply
- You need a non-RGB minimalist design
- You have a small form factor case
Verdict: GAMEMAX 1050W ATX 3.0 Gold PSU delivers high power and modern connectivity for gaming rigs. It fits users with standard ATX cases who need robust support for next-gen graphics cards.
MSI MAG 1000W Gold Modular Power Supply
Best for: High-performance large case builds
- Wattage
- 1000W
- Efficiency Rating
- 80 PLUS GOLD
- Modularity
- Fully modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Warranty
- 10-year
This is a 1000W ATX 3.1 power supply with 80 Plus Gold efficiency. It features a fully modular design and a 12V-2x6 connector for modern GPUs. The unit measures 11.5 by 9.25 inches and weighs 7.25 pounds. It suits builders who need high wattage and the latest PCIe 5.1 standards for gaming systems.
Pros
- 1000W output capacity
- 80 Plus Gold efficiency rating
- Fully modular cable management
- Supports ATX 3.1 and PCIe 5.1
- Includes a 10-year limited warranty
Cons
- Large 11.5-inch length may not fit small cases
- 7.25-pound weight adds bulk to the build
- Standard ATX form factor lacks compact SFX footprint
Good fit if
- You are building a high-end gaming PC
- You need 1000W for future GPU upgrades
- Your case has ample space for long PSUs
Skip if
- You are building a compact SFX form factor
- You need a smaller footprint for tight cases
- You are on a strict budget for lower wattage
Verdict: MSI MAG A1000GL 1000W ATX 3.1 Gold is a high-wattage option for large cases. It fits users who prioritize raw power and modern connectors over compact dimensions.
ASRock Phantom Gaming 1300W ATX 3.1 PSU
Best for: high-end ATX gaming workstations
- Wattage
- 1300W
- Efficiency Rating
- 80 Plus Gold, Cybenetics Platinum
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6, PCIe 6+2pin
- Fan Size
- 135mm
The ASRock PG-1300G is a high-wattage ATX power supply built for extreme gaming rigs and content creation workstations. It delivers 1300W of continuous power with 80 Plus Gold and Cybenetics Platinum efficiency ratings. The unit features native PCIe 5.1 12V-2x6 connectors and a large 135mm fan for quiet operation. It includes a 5V BOOST mode for ARGB lighting and comes with a 10-year warranty.
Pros
- 1300W continuous power output for high-end builds
- 80 Plus Gold and Cybenetics Platinum efficiency ratings
- Native PCIe 5.1 12V-2x6 connectors for next-gen GPUs
- 10-year warranty coverage
- 135mm FDB fan with intelligent iCool control
Cons
- Standard ATX form factor is too large for SFX cases
- 1300W capacity exceeds the needs of most single-GPU systems
- No mention of low-noise or zero-RPM fan mode
Good fit if
- You are building a high-end ATX gaming workstation
- You need native PCIe 5.1 support for new GPUs
- You want a 10-year warranty for long-term reliability
Skip if
- You are building in a small SFX case
- You need a power supply under 600W
- You are looking for a compact Mini ITX solution
Verdict: ASRock PG-1300G ATX 3.1 1300W is a powerful choice for users with large ATX cases and high-end multi-GPU setups. It fits buyers who prioritize maximum wattage and modern PCIe 5.1 connectivity over compact size.
MSI 1000W Fully Modular Gold PSU
Best for: High-wattage gaming builds
- Wattage
- 1000W
- Efficiency Rating
- 80+ Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Warranty
- 10 Year
This is a 1000W ATX 3.1 power supply designed for high-performance gaming systems. It features 80 Plus Gold efficiency and fully modular cabling. The unit supports PCIe 5.1 standards with dual 12V-2x6 connectors for modern graphics cards. It uses server-grade capacitors and includes comprehensive industrial-level protections. This unit suits users needing significant power headroom and stable voltage delivery for demanding builds.
Pros
- 1000W output capacity
- 80 Plus Gold efficiency rating
- ATX 3.1 standard support
- Dual 12V-2x6 PCIe connectors
- Fully modular cable design
Cons
- Large physical dimensions at 11.5 inches long
- Heavy build at 8.82 pounds
- Standard ATX form factor limits small case compatibility
Good fit if
- You need 1000W for high-end gaming rigs
- You require PCIe 5.1 native support
- You want fully modular cabling for clean builds
Skip if
- You are building in a small form factor case
- You need SFX or SFX-L dimensions
- You prefer a lower wattage unit
Verdict: MSI MPG A1000GS 1000W ATX 3.1 delivers robust power for modern GPUs. It fits users prioritizing high wattage and latest connector standards over compact size.
Specifications side by side
| Spec | be quiet! SFX L 600W Gold Modular Power Supply | FSP 300W Flex ATX Power Supply | GAMEMAX 1050W ARGB Fully Modular PSU | GAMEMAX 1050W ATX 3.0 ARGB Power Supply | MSI MAG 1000W Gold Modular Power Supply | ASRock Phantom Gaming 1300W ATX 3.1 PSU | MSI 1000W Fully Modular Gold PSU |
|---|---|---|---|---|---|---|---|
| Wattage | 600W | 300W | 1050W | 1050W | 1000W | 1300W | 1000W |
| Efficiency Rating | 80 PLUS Gold | 80Plus Gold | 80 Plus Gold | 80 Plus Gold | 80 PLUS GOLD | 80 Plus Gold, Cybenetics Platinum | 80+ Gold |
| Modularity | Modular | not specified | Fully Modular | Fully Modular | Fully modular | Fully Modular | Fully Modular |
| ATX Version | not specified | not specified | ATX 3.0 | ATX 3.0 | ATX 3.1 | ATX 3.1 | ATX 3.1 |
| PCIe Connector Type | not specified | not specified | 12VHPWR 16pin | 12VHPWR 16pin | 12V-2x6 | 12V-2x6, PCIe 6+2pin | 12V-2x6 |
| Fan Size | 120mm | 40mm | 140mm | 140mm | not specified | 135mm | not specified |
| Warranty | 3-Year | not specified | not specified | 10 Year | 10-year | 10 Years | 10 Year |
| Form Factor | Mini ITX | Mini ITX | ATX | ATX | ATX | ATX | ATX |
| PCIe Version | not specified | not specified | not specified | not specified | PCIe 5.1 | not specified | PCIe 5.1 |
| Recommended Use | Gaming | not specified | Gaming | Gaming | Gaming | Gaming | Gaming |
| Connector | not specified | not specified | not specified | not specified | 12V-2x6 Connector | 12V-2x6 Connector | 12V-2x6 Connector |
| Size | 600W | 300W_Gold | ARGB PRO SERIES | not specified | not specified | 1300W | 1000W |
| Dimensions | 5.12 × 4.92 × 2.52 inches | 5.9 × 3.2 × 1.6 inches | 6.61 × 5.91 × 3.35 inches | 11.4 × 10.3 × 5.24 inches | 11.5 × 9.25 × 5 inches | 7.09 × 5.91 × 3.39 inches | 11.5 × 9.5 × 5.4 inches |
| Weight | 2.56 pounds | 1.8 pounds | 3.53 pounds | not specified | 7.25 pounds | not specified | 8.82 pounds |
| Color | Black | Gold | not specified | white | Black | not specified | Black |
| Model | BN639 | FSP300-60FAG | GMX-RGB-1050PRO | not specified | MAGA1000GLPCIE5 | 90-UXP130-GFUAAB | MPG A1000GS PCIE5 |
If you are selecting a chassis, compare be quiet silent base 802 black alternatives to confirm PSU bracket compatibility.
Frequently asked questions
Is there a quieter SFX power supply than the be quiet! SFX L?
The be quiet! SFX L 600W Gold is specifically designed for quiet Mini ITX gaming builds. It features an 80 Plus Gold efficiency rating, which reduces heat and fan noise. While other options exist, this model prioritizes silence in a compact 4.92 by 2.52 inch form factor.
What is the smallest SFX power supply available?
The FSP 300W Flex ATX is the most compact option listed. It measures just 3.2 by 1.6 inches, making it ideal for tight Mini ITX cases. It offers 80 Plus Gold efficiency for low power consumption, though its 300W output suits only low-power systems.
Which ATX power supply supports the latest PCIe 5.1 standard?
Several ATX models support PCIe 5.1 for modern graphics cards. The MSI MAG 1000W Gold and MSI 1000W Fully Modular Gold both feature this connector. They also adhere to the ATX 3.1 specification, ensuring compatibility with high-end gaming rigs and next-generation hardware.
Can I find a white ATX power supply for my build?
Yes, the GAMEMAX 1050W ATX 3.0 ARGB Power Supply comes in white. It is a fully modular unit with 80 Plus Gold efficiency. This model provides 1050W of power, making it suitable for high-performance gaming builds that require robust support for multiple components.
What is the highest wattage power supply in this list?
The ASRock Phantom Gaming 1300W ATX 3.1 PSU offers the highest wattage at 1300W. It is designed for high-end ATX gaming workstations with multi-GPU setups. It includes a 12V-2x6 connector and maintains 80 Plus Gold efficiency for reliable power delivery.
Are there fully modular options for standard ATX cases?
Most ATX models here are fully modular for cleaner cable management. The GAMEMAX 1050W units, MSI 1000W models, and ASRock 1300W PSU all feature full modularity. This allows you to connect only the cables you need, reducing clutter inside your desktop case.