Looking Beyond the SilverStone Extreme 550W SFX Gold? 6 Alternatives Worth a Look
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
The silverstone technology extreme 550rz gold alternatives offer different specifications for small form factor builds. You might look beyond the SilverStone Extreme 550W SFX Gold if you need more wattage, a different efficiency rating, or a distinct brand. This unit provides 550W of power with 80 PLUS Gold certification and fits the standard SFX12V 4.1 size. It includes a 92mm fan and a single 12V-2x6 connector for modern graphics cards.
The 6 alternatives in this guide were chosen because their specs overlap with the original. Each option shares the compact SFX footprint, ensuring compatibility with your case. Some models offer higher wattage, such as 700W or 750W, while others provide Platinum efficiency or fully modular cabling. You can compare these options based on your specific needs for power density, silence, or connector type. This list helps you find a power supply that matches your system requirements without sacrificing space.
Our top pick: SilverStone Extreme 550W SFX Gold Power Supply.
Comparing SFX Alternatives to the SilverStone 550W
SilverStone 700W Platinum SFX-L Power Supply
The SilverStone 700W Platinum SFX-L offers 150W more output than the 550W original. It reaches Platinum efficiency, which reduces energy waste at high loads. The 120mm fan may run quieter than the original’s 92mm unit, though the larger footprint requires more case depth. You get fully modular cables for cleaner builds. This choice suits users who need extra power headroom for stronger GPUs while maintaining high efficiency standards in a compact frame.
SilverStone 700W Platinum SFX Power Supply
This SilverStone 700W Platinum unit matches the original’s SFX dimensions but provides 20% more wattage. It upgrades from Gold to Platinum efficiency, delivering better performance at typical loads. The design remains fully compact, fitting standard SFX cases without issue. You gain higher power density and improved energy savings. This option is ideal for builders who find the 550W limit too restrictive but still require a small footprint and top-tier efficiency for their compact system.
Cooler Master V750 SFX Gold PCIe 5.1 PSU
The Cooler Master V750 SFX Gold provides 200W more power than the original. It supports PCIe 5.1, offering newer GPU connector compatibility compared to the original’s 12V-2x6 setup. The unit is lighter, weighing just over 3 pounds. You get a compact form factor with modern connectivity standards. This choice fits users building with the latest graphics cards who need higher wattage and updated cable standards without increasing the physical size of their power supply.
SilverStone 750W Platinum SFX PSU
This SilverStone 750W Platinum unit delivers 200W more than the original 550W model. It achieves Platinum efficiency, surpassing the original’s Gold rating for better energy conservation. The fully modular design allows for customized cable management. It maintains the standard SFX dimensions, ensuring compatibility with most small cases. You get significant power headroom and superior efficiency. This option is best for users who need substantial power for high-end components while prioritizing efficiency and compact sizing.
Lian Li 750W SFX Gold Power Supply
The Lian Li 750W SFX Gold offers 200W more capacity than the original. It matches the Gold efficiency rating but provides fully modular cabling for easier installation. The unit features a standard SFX footprint, fitting into typical small form factor cases. You gain more power for demanding builds without sacrificing space. This choice suits users who want a reliable 750W output with proven efficiency standards, avoiding the need for adapters or excessive wattage found in higher-tier models.
Lian Li 850W White SFX Power Supply
The Lian Li 850W SFX Gold provides 300W more power than the original SilverStone unit. It maintains Gold efficiency while offering fully modular cables. The compact SFX form factor allows it to fit in standard small cases. You get significant power headroom for high-performance GPUs. This option is ideal for users who need maximum wattage in a small package. It sacrifices some efficiency rating for raw power output, making it suitable for systems with heavy graphical workloads.
Quick picks
Our 7 picks
SilverStone Extreme 550W SFX Gold Power Supply
Best for: Compact PCs needing 550W efficiency
- Wattage
- 550W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Modular
- ATX Version
- SFX12V 4.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 92mm
View on Amazon: SilverStone Extreme 550W SFX Gold Power Supply Affiliate link
This Silverstone unit is a 550W SFX power supply certified at 80 PLUS Gold. It features a 92mm fan with smart deactivation for quiet operation and includes Japanese capacitors. The design supports SFX12V 4.1 standards and includes a single 12V-2x6 connector for modern graphics cards. It is built for small form factor PCs that need reliable, efficient power without excessive noise.
Pros
- 80 PLUS Gold efficiency rating
- Single 12V-2x6 PCIe connector
- Silent 92mm FDB fan with smart deactivation
- Japanese capacitors for stability
Cons
- Lower 550W wattage compared to 700W alternatives
- Requires separate purchase of 12V-2x6 cable
- Smaller 92mm fan may spin up sooner than larger units
Good fit if
- You need a compact SFX power supply for a small case
- You want 80 PLUS Gold efficiency for better energy savings
- You are building a PC with a single modern GPU
Skip if
- You require more than 550W of continuous power
- You prefer a fully modular unit with included cables
- You need a larger 120mm fan for silent operation
Verdict: Silverstone Extreme 550Rz Gold 550W SFX is a solid choice for small builds needing efficient power. It fits users who prioritize compact size and modern PCIe connectivity over higher wattage.
SilverStone 700W Platinum SFX-L Power Supply
Best for: quiet high-efficiency small form factor builds
- Wattage
- 700W
- Efficiency Rating
- 80 PLUS Platinum
- Modularity
- Fully Modular
- PCIe Connector Type
- PCI-E 8/6pin
- Fan Size
- 120mm
- Form Factor
- SFX
View on Amazon: SilverStone 700W Platinum SFX-L Power Supply Affiliate link
This SilverStone unit delivers 700W of continuous power in an SFX form factor. It features an 80 PLUS Platinum efficiency rating and a fully modular design. The standout feature is the silent 120mm fan with semi-fanless operation. It supports Quad PCI-E 8/6pin connectors for modern graphics cards. This power supply suits builders needing high efficiency and quiet performance in compact cases.
Pros
- 80 PLUS Platinum efficiency certification
- Silent 120mm fan with semi-fanless mode
- Fully modular cable design
- Supports Quad PCI-E 8/6pin connectors
Cons
- Heavier at 5.07 pounds
- SFX-L height of 2.5 inches
- No mention of PCIe Gen 5 native support
Good fit if
- You need high efficiency for low heat
- You want silent operation in small cases
- You require multiple PCIe power connectors
Skip if
- You need the smallest SFX height
- You prefer a lighter power supply
- You require Gen 5 specific certification
Verdict: SilverStone 700W SFX Platinum offers top-tier efficiency and quiet cooling for compact builds. It fits users prioritizing silence and power density over minimal weight.
SilverStone 700W Platinum SFX Power Supply
Best for: small cases needing efficient power
- Wattage
- 700W
- Efficiency Rating
- 80 PLUS Platinum
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 3.94 × 4.92 × 2.5 inches
- Weight
- 4.59 pounds
View on Amazon: SilverStone 700W Platinum SFX Power Supply Affiliate link
This SilverStone unit delivers 700W of power in a compact SFX form factor. It carries an 80 PLUS Platinum efficiency rating, meaning less wasted energy and heat. The 92mm FDB fan runs quietly at 18 dBA. You get a strong single +12V rail and all Japanese capacitors for stable performance. It fits standard SFX cases without extra adapters. This is a high-efficiency option for small builds.
Pros
- 80 PLUS Platinum efficiency certification
- 700W output in SFX size
- Quiet 92mm FDB fan at 18 dBA
- Single +12V rail design
Cons
- Heavier build at 4.59 pounds
- 92mm fan may be louder than 120mm alternatives
- No mention of PCIe 5.1 support
Good fit if
- You need high efficiency in a small case
- You want a quiet 700W SFX unit
- You prefer a single +12V rail
Skip if
- You need PCIe 5.1 cable support
- You want a lighter power supply
- You prefer a 120mm silent fan
Verdict: SilverStone SX700-PT 700W SFX Platinum suits users who prioritize efficiency and compact size over maximum silence. It provides solid power for small form factor systems without requiring extra adapters.
Cooler Master V750 SFX Gold PCIe 5.1 PSU
Best for: Compact PCs with next-gen GPUs
- Efficiency Rating
- Gold
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12VHPWR
- Form Factor
- SFX
- PCIe Version
- PCIe 5.1
- Dimensions
- 3.94 × 4.92 × 2.5 inches
View on Amazon: Cooler Master V750 SFX Gold PCIe 5.1 PSU Affiliate link
This Cooler Master V750 SFX Gold power supply delivers 750W in a compact SFX form factor. It features ATX 3.1 compliance and PCIe 5.1 readiness, supporting up to 450W for modern GPUs via a 12VHPWR connector. The unit includes 90-degree durable cables and customized short lengths to reduce clutter in small cases. It is ideal for builders needing high efficiency and next-gen GPU support in tight spaces.
Pros
- 750W output in SFX form factor
- ATX 3.1 and PCIe 5.1 ready
- Supports up to 450W for GPUs
- 90-degree 12VHPWR connector for safety
- 80 Plus Gold efficiency rating
Cons
- Heavier at 3.13 pounds
- May need extended cables for larger cases
- Only 2.5 inches in height
Good fit if
- You need PCIe 5.1 support for new GPUs
- You are building a compact SFF PC
- You want high efficiency in a small form factor
Skip if
- You require a larger ATX form factor
- You need more than 750W of power
- You prefer a lighter power supply under 3 pounds
Verdict: Cooler Master V750 SFX Gold provides essential PCIe 5.1 readiness and high efficiency for compact builds. It fits users who need modern GPU support without sacrificing case space.
SilverStone 750W Platinum SFX PSU
Best for: small builds needing high efficiency
- Wattage
- 750W
- Efficiency Rating
- 80 Plus Platinum
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 3.94 × 4.92 × 2.5 inches
View on Amazon: SilverStone 750W Platinum SFX PSU Affiliate link
This SilverStone unit delivers 750W in a standard SFX form factor. It features 80 Plus Platinum efficiency and fully modular cabling. The 92mm fan supports silent operation through auto-start-top technology. All Japanese capacitors support reliable performance. You get a compact, high-efficiency power supply suitable for small form factor builds that require stable power delivery.
Pros
- 80 Plus Platinum efficiency rating
- Fully modular cable design
- 92mm dual ball bearing fan
- Standard SFX dimensions
Cons
- 92mm fan is smaller than the 120mm options on this list
- 750W output is lower than the 850W LIAN LI alternative
- No PCIe Gen 5 support mentioned unlike other listed units
Good fit if
- You need maximum efficiency for a small case
- You want fully modular cables for clean builds
- You prioritize 80 Plus Platinum certification
Skip if
- You require PCIe Gen 5 connectivity
- You need more than 750W of power
- You prefer a larger 120mm silent fan
Verdict: SilverStone SX750-PT-X 750W SFX suits users who need high efficiency in a compact SFX footprint. It fits small builds where Platinum certification and modular cabling matter more than peak wattage.
Lian Li 750W SFX Gold Power Supply
Best for: Standard SFF builds needing 750W
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- Form Factor
- SFX
- Dimensions
- 4 × 3 × 5 inches
View on Amazon: Lian Li 750W SFX Gold Power Supply Affiliate link
The Lian Li SP750 is a 750W SFX power supply with 80 PLUS Gold efficiency and fully modular cabling. It measures 4 by 3 by 5 inches. This compact unit suits small form factor builds that need reliable power without excess bulk. You get high efficiency in a small footprint, making it a solid option for tight cases.
Pros
- 750W output capacity
- 80 PLUS Gold efficiency rating
- Fully modular cable design
- Compact SFX form factor
Cons
- No PCIe 5.1 native support listed
- Standard 120mm fan not included
- Lacks visible power display
Good fit if
- You need 750W in an SFX case
- You want fully modular cables
- You prioritize high efficiency
Skip if
- You require PCIe 5.1 support
- You need a silent 120mm fan
- You prefer Platinum efficiency
Verdict: The Lian Li SP750 750W SFX Gold fits users who need high efficiency and modular cabling in a small space. It works well for standard SFF builds that do not require the latest PCIe 5.1 connectors.
Lian Li 850W White SFX Power Supply
Best for: Small cases needing high wattage
- Wattage
- 850 WATT
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- Form Factor
- SFX
View on Amazon: Lian Li 850W White SFX Power Supply Affiliate link
The Lian Li SP850 is an 850-watt SFX power supply with 80 Plus Gold efficiency. It is fully modular, letting you connect only the cables you need. The white finish suits matching builds. It fits small form factor cases. This unit provides reliable power for high-end components in tight spaces.
Pros
- 850 watts of continuous power
- 80 Plus Gold efficiency rating
- Fully modular cable design
- Compact SFX form factor
- White color finish
Cons
- Higher wattage may exceed needs for low-power systems
- SFX size limits airflow compared to larger units
- White finish may clash with black interiors
Good fit if
- You need high wattage in a small case
- You want efficient power delivery for gaming
- You prefer a white cable management look
Skip if
- You require ATX form factor compatibility
- You need Platinum efficiency for maximum savings
- You are building a low-power office PC
Verdict: The Lian Li SP850 850W SFX Gold PSU delivers solid 850W power in a compact SFX frame. It suits builders who need high performance in small cases and value efficient operation.
Specifications side by side
| Spec | SilverStone Extreme 550W SFX Gold Power Supply | SilverStone 700W Platinum SFX-L Power Supply | SilverStone 700W Platinum SFX Power Supply | Cooler Master V750 SFX Gold PCIe 5.1 PSU | SilverStone 750W Platinum SFX PSU | Lian Li 750W SFX Gold Power Supply | Lian Li 850W White SFX Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 550W | 700W | 700W | not stated | 750W | 750W | 850 WATT |
| Efficiency Rating | 80 PLUS Gold | 80 PLUS Platinum | 80 PLUS Platinum | Gold | 80 Plus Platinum | 80 PLUS Gold | 80 Plus Gold |
| Modularity | Modular | Fully Modular | not stated | not stated | Fully Modular | Fully Modular | Fully Modular |
| ATX Version | SFX12V 4.1 | not stated | not stated | ATX 3.1 | not stated | not stated | not stated |
| PCIe Connector Type | 12V-2x6 | PCI-E 8/6pin | not stated | 12VHPWR | not stated | not stated | not stated |
| Fan Size | 92mm | 120mm | 92mm | not stated | 92mm | not stated | not stated |
| Form Factor | SFX | SFX | SFX | SFX | SFX | SFX | SFX |
| PCIe Version | not stated | not stated | not stated | PCIe 5.1 | not stated | not stated | not stated |
| Size | not stated | 700W SFX12V | 700W | 750 | 750W | not stated | not stated |
| Dimensions | 3.94 × 4.92 × 2.5 inches | 5.12 × 4.92 × 2.5 inches | 3.94 × 4.92 × 2.5 inches | 3.94 × 4.92 × 2.5 inches | 3.94 × 4.92 × 2.5 inches | 4 × 3 × 5 inches | not stated |
| Weight | not stated | 5.07 pounds | 4.59 pounds | 3.13 pounds | not stated | not stated | not stated |
| Model | SST-SX0550MCGD-A | SST-SX700-LPT | SX700-PT | MPY-7501-SFHAGV-3U1 | PS-SX750-PT-X | SP750 | SP850W |
| Color | not stated | not stated | not stated | Black Edition | not stated | Black | white |
If your system build requires a compatible case, you can evaluate silverstone technology alta t1 aluminum alternatives.
Frequently asked questions
What is the best SFX power supply for compact PCs needing 550W efficiency?
The SilverStone Extreme 550W SFX Gold Power Supply is the top choice. It fits users who prioritize compact size and modern PCIe connectivity over higher wattage. The unit measures 4.92 inches wide, 2.5 inches high, and 3.94 inches long. This makes it ideal for small builds requiring efficient power delivery.
Which SFX power supply offers the best budget option for quiet high-efficiency small form factor builds?
The SilverStone 700W Platinum SFX-L Power Supply is the best budget pick. It offers top-tier efficiency and quiet cooling for compact builds. This unit features a 120mm fan and is fully modular. It measures 5.12 inches in length, making it slightly longer than standard SFX units but fitting many small cases.
Are there alternatives to the SilverStone Extreme 550W SFX Gold that provide 700W of power?
Yes, the SilverStone 700W Platinum SFX Power Supply is an also great option. It suits users who prioritize efficiency and compact size over maximum silence. This model measures 3.94 inches in length and weighs 4.59 pounds. It provides solid power for small form factor systems without requiring extra adapters for standard connections.
Which SFX power supply is best for compact PCs with next-gen GPUs requiring PCIe 5.1?
The Cooler Master V750 SFX Gold PCIe 5.1 PSU is the best premium choice. It provides essential PCIe 5.1 readiness and high efficiency for compact builds. This unit weighs only 3.13 pounds and measures 3.94 inches long. It fits users who need modern GPU support without sacrificing case space.
What is the best 750W SFX power supply for small builds needing high efficiency?
The SilverStone 750W Platinum SFX PSU is the best 750W option. It suits users who need high efficiency in a compact SFX footprint. This fully modular unit measures 3.94 inches long and delivers Platinum certification. It fits small builds where modular cabling and efficiency matter more than peak wattage.
Does Lian Li offer a 750W SFX power supply for standard small form factor builds?
Yes, the Lian Li 750W SFX Gold Power Supply is an also great pick. It fits users who need high efficiency and modular cabling in a small space. This unit measures 3 inches wide, 5 inches high, and 4 inches long. It works well for standard SFF builds that do not require the latest PCIe 5.1 connectors.
Which SFX power supply is best for small cases needing high wattage up to 850W?
The Lian Li 850W White SFX Power Supply is the best high-wattage option. It delivers solid 850W power in a compact SFX frame. This fully modular unit is suitable for builders who need high performance in small cases. It values efficient operation while providing ample power for demanding components.