6 Best Alternatives to the SilverStone SX750 750W SFX Platinum (2026)
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The SilverStone SX750 Platinum is a compact power supply that delivers 750W in a standard SFX form factor. It earns high marks for 80 PLUS Platinum efficiency and features a fully modular design with flat cables. This model suits users who need reliable power in small cases without sacrificing efficiency. However, you might look for silverstone sx750 platinum alternatives if your build requires different specifications. You may need higher wattage for a powerful graphics card, or a smaller SFX-L footprint for ultra-compact chassis. Some builders prefer different brands or specific connector standards like ATX 3.1.
We selected these 6 options because their published specs overlap with the original unit. The list includes other SFX models from SilverStone, such as the 1000W SX1000 and the 700W Gold variant. It also features an ASRock unit with modern PCIe 5.1 support and an EVGA option for standard ATX cases. Each alternative matches the original in key areas like modularity or efficiency rating. You can compare these units to find the exact size, wattage, or feature set your specific build requires. This approach ensures you get a power supply that fits your case and meets your performance needs.
Our top pick: SilverStone SX750 750W SFX Platinum PSU.
How each alternative compares
SilverStone 1000W SFX-L Platinum Power Supply
This SilverStone unit upgrades you to 1000W while shrinking the footprint to SFX-L dimensions. It measures 4.92 by 2.5 by 5.12 inches, making it noticeably smaller than the standard SFX SX750. You gain significant wattage for high-end GPUs, but you must ensure your case supports the SFX-L form factor. The efficiency remains at 80 PLUS Platinum, so power loss stays low. This model is ideal if your chassis is tight and you need more than 750W. The standard SFX model offers more mounting compatibility in typical cases. Choose this if space is your primary constraint and power demand is high.
SilverStone 750W Platinum SFX PSU
This SilverStone model matches the 750W output but uses a compact SFX-L form factor. It measures 4.92 by 2.5 by 3.94 inches, which is smaller and lighter than the standard SFX SX750. You get the same 80 PLUS Platinum efficiency and fully modular cables. The reduced size helps in very tight cases, but it requires SFX-L compatibility. This is a strong alternative if you want maximum wattage density. The standard SX750 fits more cases due to its standard SFX size. Pick this version if your build prioritizes minimal volume over universal case compatibility. The electrical performance remains comparable for standard gaming workloads.
ASRock PG-850PSF 850W SFX ATX 3.1
The ASRock unit provides 850W in a compact SFX form factor. It supports ATX 3.1 and PCIe 5.1 standards, offering modern connector support for new graphics cards. This is a key difference from the SilverStone SX750, which lacks these specific modern standards. It maintains 80 PLUS Platinum efficiency and includes a ten-year warranty. The size is 4.92 by 2.5 by 3.94 inches, similar to SFX-L units. You gain future-proofing and slightly higher wattage. However, you must verify case compatibility with this specific size. This model suits gamers building small form factor PCs with powerful, modern GPUs. It is better than the SX750 if you need the latest PCIe connectors.
EVGA Supernova 1000 P2 Platinum Power Supply
The EVGA Supernova 1000 P2 delivers 1000W but uses a standard ATX form factor. It measures 6 by 3.3 by 7.8 inches, which is much larger than the SFX SX750. This unit is not suitable for small form factor builds. It offers 80 PLUS Platinum efficiency and fully modular cables. The primary advantage is higher wattage for standard ATX cases. You sacrifice compactness for raw power output. This model is ideal if you are building a full-size tower PC. It differs significantly from the SX750 in physical dimensions. Choose this if you have a large case and need more than 750W. The SFX model is strictly for compact builds.
SilverStone 700W SFX 80 Plus Gold Power Supply
This SilverStone model offers 700W in a standard SFX form factor. It has 80 PLUS Gold efficiency, which is lower than the Platinum rating of the SX750. The size is 3.94 by 2.5 by 4.92 inches, making it slightly smaller in some dimensions. You save on cost but lose efficiency and wattage. This unit is suitable for builds under 700W that do not require top-tier efficiency. It is fully modular like the SX750. The difference lies in the efficiency certification and power output. Pick this if your power needs are modest and budget is a concern. The SX750 is better for high-efficiency requirements. This is a mid-range option for standard gaming or workstation PCs.
SilverStone 700W Platinum SFX Power Supply
This SilverStone unit provides 700W in a compact SFX form factor. It matches the 80 PLUS Platinum efficiency of the SX750 but offers less wattage. The size is 4.92 by 2.5 by 3.94 inches, which is smaller than the standard SFX model. You gain a more compact footprint but lose 50W of power. This model is ideal for builds that do not require 750W. It maintains high efficiency and quiet operation. The difference is primarily in wattage and physical dimensions. Choose this if your components need less than 700W. The SX750 is better if you need the extra power headroom. This is a solid choice for efficiency-focused small builds with lower power demands.
Quick picks
Our 7 picks
SilverStone SX750 750W SFX Platinum PSU
Best for: Compact high-efficiency builds
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS Platinum
- Modularity
- Fully Modular
- Fan Size
- 92mm
- Form Factor
- SFX
- Dimensions
- 10 × 8 × 4 inches
View on Amazon: SilverStone SX750 750W SFX Platinum PSU Affiliate link
This SilverStone unit delivers 750W of power in a standard SFX form factor. It carries 80 PLUS Platinum efficiency certification and features a fully modular design. The 92mm fan supports silent operation by starting only under load. You get flexible flat array cables for easier cable management in tight cases. It suits users needing high efficiency and compact dimensions.
Pros
- 80 PLUS Platinum efficiency rating
- Standard SFX form factor
- Fully modular cable design
- 92mm fan with auto-start technology
Cons
- 750W output is lower than 1000W alternatives
- 4.47 pounds weight is heavier than some SFX units
- Single +12V rail limits multi-rail flexibility
Good fit if
- You need a compact SFX power supply
- You prioritize high efficiency ratings
- You want fully modular cables
Skip if
- You require more than 750W of power
- You prefer a larger ATX form factor
- You need multiple +12V rails
Verdict: SilverStone 750W SFX Platinum PSU offers compact efficiency for small builds. It fits users who need 750W in an SFX case with modular cables.
SilverStone 1000W SFX-L Platinum Power Supply
Best for: High-wattage small form factor builds
- Wattage
- 1000W
- Efficiency Rating
- 80 Plus Platinum
- Modularity
- Fully Modular
- Fan Size
- 120mm
- Form Factor
- SFX
- Dimensions
- 5.12 × 4.92 × 2.5 inches
View on Amazon: SilverStone 1000W SFX-L Platinum Power Supply Affiliate link
This SilverStone unit delivers 1000W of continuous power in a compact SFX-L form factor. It carries an 80 PLUS Platinum efficiency rating and uses a single +12V rail. The 120mm fan supports semi-fanless operation for quiet performance. You should choose this if you need high wattage in a small case. It is built for 24/7 operation at 50℃. The fully modular design helps manage cable clutter.
Pros
- 1000W continuous power output
- 80 PLUS Platinum efficiency
- Semi-fanless operation with 120mm fan
- Fully modular cable design
- Single +12V rail with 83.3A
Cons
- SFX-L height requires specific case compatibility
- Heavier than standard SFX units at 3.06 pounds
- Not compatible with ATX form factor without adapter
Good fit if
- You need 1000W in a small form factor case
- You want high efficiency for lower heat output
- You prefer silent operation at low loads
Skip if
- You have a standard ATX case without SFX-L support
- You need more than 1000W of power
- You require multiple +12V rails for specific legacy hardware
Verdict: SilverStone SX1000 1000W SFX Platinum fits users who need maximum wattage in a compact build. It is ideal for high-end small form factor PCs that demand efficiency and silence.
SilverStone 750W Platinum SFX PSU
Best for: Compact high-efficiency builds
- 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
The SilverStone SX750-PT is a 750W SFX power supply with 80 PLUS Platinum efficiency. It features a fully modular design and a 92mm dual ball bearing fan that stays silent until needed. This unit suits users who need high efficiency in a compact case. The standard SFX size fits most small form factor builds. It delivers reliable power for modern components.
Pros
- 80 PLUS Platinum efficiency rating
- Fully modular cable design
- 92mm dual ball bearing fan
- Auto-start fan for silent operation
Cons
- Lower wattage than 850W or 1000W alternatives
- Standard SFX dimensions limit airflow in tight cases
- No mention of NVIDIA certification or specific rail details
Good fit if
- You need high efficiency in a small case
- You want fully modular cables for clean builds
- You prefer silent operation under low loads
Skip if
- You require more than 750W of power
- You need NVIDIA-specific certifications
- You want a larger 120mm fan for better cooling
Verdict: SilverStone SX750-PT 750W SFX Platinum offers top-tier efficiency in a compact form. It fits users prioritizing power savings and silence in small chassis.
ASRock PG-850PSF 850W SFX ATX 3.1
Best for: compact high-wattage builds
- Wattage
- 850W
- Efficiency Rating
- 80 Plus Platinum, Cybenetics Platinum
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 92mm
View on Amazon: ASRock PG-850PSF 850W SFX ATX 3.1 Affiliate link
This ASRock unit delivers 850W of power in a compact SFX form factor. It carries 80 Plus Platinum and Cybenetics Platinum efficiency ratings, ensuring low heat and high reliability. The ATX 3.1 and PCIe 5.1 compliance includes a native 12V-2x6 connector for modern graphics cards. Japanese capacitors support stable performance. The fully modular design helps manage cables in tight spaces, making it suitable for high-performance small builds.
Pros
- 850W output in SFX size
- 80 Plus and Cybenetics Platinum efficiency
- ATX 3.1 and PCIe 5.1 ready
- Native 12V-2x6 connector
- 10-year warranty
Cons
- Smaller 92mm fan compared to standard units
- Higher wattage may exceed needs for low-power builds
- SFX form factor limits airflow options
Good fit if
- You need 850W in a small case
- You want ATX 3.1 compliance
- You prefer ultra-quiet operation
Skip if
- You require a standard ATX size
- You need more than 850W
- You prefer a larger 120mm fan
Verdict: ASRock PG-850PSF 850W SFX fits users who need high efficiency and modern connector support in a compact chassis. It suits gamers building small form factor PCs with powerful graphics cards.
EVGA Supernova 1000 P2 Platinum Power Supply
Best for: high-wattage ATX builds
- Wattage
- 1000W
- Efficiency Rating
- 80 PLUS Platinum
- Modularity
- Fully Modular
- Fan Size
- 140mm
- Warranty
- 10 Year
- Dimensions
- 7.8 × 6 × 3.3 inches
View on Amazon: EVGA Supernova 1000 P2 Platinum Power Supply Affiliate link
This EVGA unit delivers 1000W of power with 80 PLUS Platinum efficiency. It features a 140mm double ball bearing fan and fully modular cables. The build uses 100% Japanese capacitors for stability. It is designed for high-end systems requiring significant wattage. You should consider this if you need more power than the 750W alternatives in this list.
Pros
- 1000W output capacity
- 80 PLUS Platinum efficiency rating
- 140mm double ball bearing fan
- Fully modular cable design
- 10-year warranty coverage
Cons
- Larger physical dimensions than SFX form factor
- Heavier build at 4.41 pounds
- Higher wattage than typical SFX alternatives
Good fit if
- You need 1000W of power
- You have a standard ATX case
- You want Platinum efficiency
Skip if
- You require an SFX form factor
- You need a smaller power supply
- You are building a compact PC
Verdict: EVGA Supernova 1000 P2 1000W Platinum offers high wattage and efficiency for standard ATX cases. It suits users who prioritize power output over compact size. This unit is not suitable for small form factor builds.
SilverStone 700W SFX 80 Plus Gold Power Supply
Best for: Standard builds under 700W
- 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 carries an 80 PLUS Gold efficiency rating, meaning it wastes less energy as heat. The design uses a 92mm fan for quiet operation at low loads. You get fully modular cables with flat arrays for easier cable management. This model suits users who need reliable power but do not require the higher wattage of Platinum options.
Pros
- 80 PLUS Gold efficiency certification
- Fully modular cable design
- 92mm fan for silent running
- Japanese capacitors for stability
Cons
- Lower 700W wattage than 750W competitors
- 80 PLUS Gold rating below Platinum tier
- Heavier at 3.09 pounds
Good fit if
- You need a reliable 700W SFX unit
- You prioritize efficiency over maximum wattage
- You want quiet operation with a 92mm fan
Skip if
- You require 750W or more power
- You need 80 PLUS Platinum efficiency
- You want the lightest possible PSU
Verdict: SilverStone 700W SFX Gold is a solid mid-range option for builds that do not demand high wattage. It offers good efficiency and quiet cooling for standard gaming or workstation PCs.
SilverStone 700W Platinum SFX Power Supply
Best for: SFX builds needing high efficiency
- 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
The SilverStone SX700-PT delivers 700W of power in a standard SFX form factor. It holds an 80 PLUS Platinum efficiency rating and uses a 92mm fluid dynamic bearing fan. This unit features all Japanese capacitors and a class-leading single +12V rail. It suits builders who need high efficiency and reliable power delivery in a compact case. Note that it requires an adapter for ATX cases.
Pros
- 80 PLUS Platinum efficiency certification
- 700W power output in SFX size
- Silent 92mm FDB fan with 18 dBA minimum
- All Japanese capacitors for reliability
- Class-leading single +12V rail design
Cons
- Lower wattage than the 750W SX750 Platinum
- Requires separate PP08 adapter for ATX cases
- Heavier at 4.59 pounds than lighter SFX units
Good fit if
- You need Platinum efficiency in a compact SFX form factor
- You are building in an SFX case and want high reliability
- You prefer a single +12V rail for stable power delivery
Skip if
- You need more than 700W of power
- You are building in an ATX case without buying an adapter
- You require a higher wattage like 850W or 1000W
Verdict: SilverStone SX700-PT 700W SFX Platinum is a solid choice for SFX builds prioritizing efficiency and stability over raw wattage. It fits users who value quiet operation and premium components in a small footprint.
Specifications side by side
| Spec | SilverStone SX750 750W SFX Platinum PSU | SilverStone 1000W SFX-L Platinum Power Supply | SilverStone 750W Platinum SFX PSU | ASRock PG-850PSF 850W SFX ATX 3.1 | EVGA Supernova 1000 P2 Platinum Power Supply | SilverStone 700W SFX 80 Plus Gold Power Supply | SilverStone 700W Platinum SFX Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 750W | 1000W | 750W | 850W | 1000W | 700W | 700W |
| Efficiency Rating | 80 PLUS Platinum | 80 Plus Platinum | 80 Plus Platinum | 80 Plus Platinum, Cybenetics Platinum | 80 PLUS Platinum | 80 PLUS Gold | 80 PLUS Platinum |
| Modularity | Fully Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular | not stated |
| ATX Version | not stated | not stated | not stated | ATX 3.1 | not stated | not stated | not stated |
| PCIe Connector Type | not stated | not stated | not stated | 12V-2x6 | not stated | not stated | not stated |
| Fan Size | 92mm | 120mm | 92mm | 92mm | 140mm | 92mm | 92mm |
| Warranty | not stated | not stated | not stated | 10 Years | 10 Year | not stated | not stated |
| Form Factor | SFX | SFX | SFX | SFX | not stated | SFX | SFX |
| PCIe Version | not stated | not stated | not stated | PCIe 5.1 | not stated | not stated | not stated |
| Recommended Use | not stated | not stated | not stated | Gaming | not stated | not stated | not stated |
| Size | not stated | 1000W SFX12V | 750W | 850W | 1000W | 700W | 700W |
| Dimensions | 10 × 8 × 4 inches | 5.12 × 4.92 × 2.5 inches | 3.94 × 4.92 × 2.5 inches | 3.94 × 4.92 × 2.5 inches | 7.8 × 6 × 3.3 inches | 4.92 × 3.94 × 2.5 inches | 3.94 × 4.92 × 2.5 inches |
| Weight | 4.47 pounds | 3.06 pounds | not stated | not stated | 4.41 pounds | 3.09 pounds | 4.59 pounds |
| Model | SX750-PT | not stated | PS-SX750-PT-X | 90-UFP085-PFUAAB | 220-P2-1000-XR | SST-SX700-G | SX700-PT |
| Color | not stated | not stated | not stated | not stated | not stated | Black?Lead-Free Paint? | not stated |
If your small chassis requires low-profile cooling, you can review silverstone sst ar06 alternatives for cooler clearance specs.
Frequently asked questions
What is the highest wattage available in an SFX form factor?
The SilverStone 1000W SFX-L Platinum offers 1000W of power in a compact size. It measures 4.92 by 2.5 by 5.12 inches. This makes it suitable for high-end small form factor PCs that demand maximum efficiency and silence.
Are there SFX power supplies that support modern GPU connectors?
Yes, the ASRock PG-850PSF 850W SFX supports ATX 3.1 and PCIe 5.1 standards. It provides 850W of power in a compact chassis. This model suits gamers building small form factor PCs with powerful graphics cards that require modern cabling.
Can I use a standard ATX power supply in a small case?
No, standard ATX units like the EVGA Supernova 1000 P2 do not fit small form factor cases. That unit measures 6 by 3.3 by 7.8 inches. It is designed for standard ATX cases and is not suitable for compact builds.
Is there a more affordable SFX option with high efficiency?
The SilverStone 700W SFX Gold provides 80 Plus Gold efficiency at a lower tier. It measures 3.94 by 2.5 by 4.92 inches. This unit is a solid mid-range option for builds that do not demand high wattage but still need quiet cooling.
What is the smallest SFX power supply on the list?
The SilverStone 750W Platinum SFX PSU is the most compact, measuring 4.92 by 2.5 by 3.94 inches. It delivers 750W with 80 Plus Platinum efficiency. This size fits users prioritizing power savings and silence in very small chassis.
Does the SilverStone SX750 have a warranty?
The provided data does not list a warranty period for the SilverStone SX750. Other models like the ASRock PG-850PSF and EVGA Supernova 1000 P2 include a 10-year warranty. You should check the manufacturer's details for specific coverage terms.
Which PSU is best for builds under 700W?
The SilverStone 700W SFX Gold is ideal for standard builds under 700W. It offers good efficiency and quiet cooling for standard gaming or workstation PCs. Its fully modular design helps manage cable clutter in tighter spaces.