ASUS ROG Loki 1000W SFX-L Alternatives: 6 Similar Picks Compared

Comparing Alternatives to the Loki

SilverStone 1000W SFX-L Platinum Power Supply

The SilverStone 1000W SFX-L Platinum matches the Loki’s wattage and efficiency rating while offering a fully modular design. It weighs slightly less at 3.06 pounds compared to the Loki’s 4 pounds. The dimensions are nearly identical, with a marginally longer length of 5.12 inches versus 4.9 inches. This unit suits builders who prioritize a lighter build and complete cable management. You lose the specific ASUS Aura Sync lighting features found on the Loki. However, the SilverStone provides a comparable high-efficiency solution for compact cases that need maximum power density without the extra weight of the ASUS model.

SilverStone Extreme 1000W Platinum SFX Power Supply

This SilverStone 1000W SFX Platinum PSU offers the same high wattage and Platinum efficiency as the Loki but in a significantly shorter chassis. Its length is only 3.94 inches, compared to the Loki’s 4.9 inches. This extra space can be critical for very tight small form factor cases. Both units share the same width and height dimensions. The SilverStone model provides modern GPU connectors similar to the Loki’s ATX 3.0 compatibility. You trade the ASUS brand ecosystem and lighting for a more compact footprint. This option is ideal if your case has strict length limitations that the standard SFX-L size might exceed.

EVGA Supernova 850 T2 850W Titanium PSU

The EVGA Supernova 850 T2 Titanium offers higher efficiency with a Titanium rating, surpassing the Loki’s Platinum certification. It is fully modular and includes a 10-year warranty. However, it is not an SFX unit. Its dimensions are much larger, making it incompatible with small form factor cases that require the Loki. You gain top-tier power conversion and a longer warranty but lose the ability to fit into compact builds. This power supply is best for standard ATX cases where space is not a constraint and maximum efficiency is the primary goal. It serves users who do not need high power density in a small chassis.

SilverStone 700W SFX 80 Plus Gold Power Supply

The SilverStone 700W SFX Gold PSU provides a lower wattage option for mid-range builds. It features Gold efficiency and is fully modular. The dimensions are similar to the Loki, with a slightly shorter length of 4.92 inches versus 4.9 inches. It weighs less at 3.09 pounds. This unit suits users who do not need 1000W for high-end graphics cards. You sacrifice maximum power output and Platinum efficiency for a lighter, more affordable solution. It is ideal for small builds that prioritize quiet operation and Gold certification over the highest possible wattage. This is a practical choice for systems that do not require the Loki’s extreme power capacity.

SilverStone 450W SFX Bronze Power Supply

This SilverStone 450W SFX Bronze PSU is designed for low-power small form factor builds. It offers Bronze efficiency and is not modular. The dimensions are larger than typical SFX units, with a width of 7 inches and a length of 9 inches. It lacks the compact footprint of the Loki. You gain a budget-friendly option for systems with modest power requirements but lose the high efficiency and compact size of the Loki. This unit is suitable for users who need basic SFX power without the cost of premium features. It is not appropriate for high-performance gaming builds that require the Loki’s 1000W output.

SilverStone 300W SFX Bronze Power Supply

The SilverStone 300W SFX Bronze PSU is the lowest wattage option in this comparison. It features Bronze efficiency and a compact SFX form factor. The dimensions are similar to the Loki, with a length of 3.94 inches. It is ideal for very low-power builds that do not require high performance. You sacrifice significant power output and efficiency for a smaller, simpler solution. This unit is best for users who prioritize compact size and silent operation over high wattage. It is not suitable for gaming builds that need the Loki’s 1000W capacity. This option serves niche applications where power demands are minimal.

Quick picks

Our 7 picks

1 Best overall

ASUS ROG Loki 1000W SFX-L Platinum PSU

Best for: high-density small form factor gaming builds

Wattage

1000W

Efficiency Rating

80 PLUS Platinum, Cybenetics Platinum

Modularity

Fully Modular

ATX Version

ATX 3.1, ATX 3.0

PCIe Connector Type

12V-2x6, 16-pin PCIe

Fan Size

120mm

View on Amazon: ASUS ROG Loki 1000W SFX-L Platinum PSU

This is an SFX-L power supply rated at 1000W with 80 PLUS Platinum efficiency. It features a 120mm fan and supports ATX 3.0 standards. The unit includes a 16-pin PCIe connector for modern graphics cards. Its compact dimensions allow it to fit in small form factor cases. You will benefit from high efficiency and reliable power delivery for gaming builds.

Pros

• 1000W output capacity
• 80 PLUS Platinum efficiency rating
• 120mm Axial-tech fan for cooling
• ATX 3.0 compatible with 16-pin PCIe cable
• SFX-L form factor fits small cases

Cons

• Heavier at 4 pounds compared to standard SFX units
• Larger dimensions than standard SFX power supplies
• Limited to SFX-L form factor compatibility

Good fit if

• You need high wattage in a small case
• You want high efficiency for lower heat
• You have an ATX 3.0 graphics card

Skip if

• You require a standard SFX size
• You need a lower wattage unit
• You prefer a lighter power supply

Verdict: ASUS ROG Loki SFX-L 1000W Platinum delivers high efficiency and modern connectivity in a compact SFX-L chassis. It suits builders who need maximum power density for high-end GPUs in small form factor cases.

2 Best premium

SilverStone 1000W SFX-L Platinum Power Supply

Best for: Compact high-wattage builds needing efficiency

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

The SilverStone SX1000 Platinum delivers 1000W of continuous power in an SFX-L form factor. It earns 80 Plus Platinum efficiency and uses a 120mm fan for semi-fanless operation at low loads. All Japanese capacitors support 24/7 use at 50°C. This unit suits you if you need high wattage in a small case. It fits well for builds requiring stable, efficient power without ATX bulk.

Pros

• 1000W continuous output rated for 24/7 operation at 50°C
• 80 Plus Platinum efficiency rating
• 120mm dual ball bearing fan with semi-fanless mode
• Fully modular cable design
• Single +12V rail with 83.3A capacity

Cons

• SFX-L size requires specific case compatibility
• Heavier at 3.06 pounds than standard SFX units
• Only compatible with included cables for reliability

Good fit if

• You need 1000W in a compact SFX-L case
• You want high efficiency for lower heat output
• You prefer silent operation at idle or low load

Skip if

• You have a standard ATX case without SFX-L support
• You need more than 1000W of continuous power
• You require third-party cable compatibility for aesthetics

Verdict: SilverStone SX1000 Platinum 1000W SFX-L is a high-efficiency power supply for compact builds needing maximum wattage. It fits users who prioritize quiet operation and stable power in a small footprint.

3 Also great

SilverStone Extreme 1000W Platinum SFX Power Supply

Best for: Small form factor builds needing 1000W

Wattage

1000W

Efficiency Rating

Cybenetics Platinum

Modularity

Fully modular

PCIe Connector Type

12V-2x6

Fan Size

92mm

Form Factor

SFX

View on Amazon: SilverStone Extreme 1000W Platinum SFX Power Supply

This SilverStone unit delivers 1000W in a compact SFX form factor. It carries Cybenetics Platinum certification for high efficiency and includes a 600W PCIe Gen 5 12V-2x6 connector for modern graphics cards. The fully modular design uses flexible embossed wires. It features a 92mm FDB fan with intelligent deactivation. This power supply suits builders needing high wattage in a small case.

Pros

• 1000W output capacity
• Cybenetics Platinum efficiency certification
• Includes 600W PCIe Gen 5 12V-2x6 connector
• Fully modular with flexible embossed wires
• 92mm FDB fan with intelligent deactivation

Cons

• Standard SFX dimensions may limit airflow in very tight cases
• Cybenetics rating instead of 80 Plus Gold or Platinum
• No mention of smart monitoring features

Good fit if

• You need 1000W power in a small form factor case
• You are building a PC with a PCIe Gen 5 graphics card
• You prefer fully modular cables with flexible design

Skip if

• You require a standard ATX form factor
• You need a power supply under 700W
• You prioritize 80 Plus certification over Cybenetics ratings

Verdict: SilverStone 1000W SFX Platinum PSU is a strong option for small builds requiring high wattage and modern GPU connectors. It fits users who need compact power without sacrificing efficiency or cable management.

4 Best budget

EVGA Supernova 850 T2 850W Titanium PSU

Best for: Standard ATX cases needing high efficiency

Wattage

850W

Efficiency Rating

80 PLUS Titanium

Modularity

Fully Modular

Fan Size

140mm

Warranty

10 Year

Dimensions

7.09 × 5.91 × 3.35 inches

View on Amazon: EVGA Supernova 850 T2 850W Titanium PSU

The EVGA Supernova 850 T2 delivers 80 PLUS Titanium efficiency, reaching 96% at 220VAC. It features a fully modular design and a 140mm double ball bearing fan. This unit includes comprehensive protections like OVP and OCP. It suits users seeking high efficiency and a 10-year warranty in a standard ATX form factor.

Pros

• 80 PLUS Titanium certification for maximum efficiency
• Fully modular cable management
• 140mm double ball bearing fan
• 10-year warranty coverage

Cons

• 850W output is lower than 1000W alternatives
• Standard ATX size does not fit SFX cases
• Heavier at 8 pounds

Good fit if

• You need Titanium-level efficiency
• You have a standard ATX case
• You want a 10-year warranty

Skip if

• You require an SFX form factor
• You need over 850W of power
• You prioritize compact dimensions

Verdict: EVGA Supernova 850 T2 Titanium offers top-tier efficiency but lacks the compact size needed for SFX builds. It fits standard ATX cases where maximum power conversion matters most.

5 Best 80 plus gold

SilverStone 700W SFX 80 Plus Gold Power Supply

Best for: SFX builds needing Gold efficiency and quiet fans

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 delivers 700W of power in a standard SFX form factor. It carries an 80 PLUS Gold efficiency rating and features a fully modular design with flat cables. The 92mm FDB fan aims for silent operation at 18 dBA. It includes all Japanese capacitors and strict voltage regulation. This power supply suits builders who need reliable efficiency in a compact case.

Pros

• 80 PLUS Gold efficiency certification
• Fully modular cable design
• 92mm FDB fan with 18 dBA minimum noise level
• All Japanese capacitors for stability

Cons

• 700W output is lower than the 1000W Loki
• Standard SFX size does not fit ATX mounting holes
• Heavier at 3.09 pounds compared to lighter competitors

Good fit if

• You need 80 PLUS Gold efficiency in an SFX case
• You prefer fully modular cables for clean builds
• You prioritize quiet operation with a 92mm fan

Skip if

• You require 1000W or higher power output
• You are building in an ATX case with ATX mounting points
• You need the highest wattage available for extreme gaming

Verdict: Silverstone SST-SX700-G 700W SFX Gold PSU offers solid efficiency and quiet operation for mid-range SFX builds. It fits users who value Gold certification and modular cables over maximum wattage.

6 Also great

SilverStone 450W SFX Bronze Power Supply

Best for: low-power SFX builds

Wattage

450W

Efficiency Rating

80 Plus Bronze

Form Factor

SFX

Dimensions

9 × 7 × 4 inches

View on Amazon: SilverStone 450W SFX Bronze Power Supply

This Silverstone unit delivers 450W of continuous power in a compact SFX form factor. It carries an 80 Plus Bronze efficiency rating, ensuring reliable performance at 20% to 100% load. The design features a single +12V rail capable of 36A. It includes an ATX bracket for broader compatibility. This power supply suits users building small form factor PCs with moderate power needs.

Pros

• 450W continuous output rated for 24/7 operation
• 80 Plus Bronze efficiency certification
• Single +12V rail with 36A capacity
• Includes bracket for standard ATX case support

Cons

• 450W output is significantly lower than the 1000W Loki
• Lacks full modular cable management
• Bronze efficiency is below the Gold and Platinum alternatives on this list

Good fit if

• You need a low-wattage SFX power supply
• You prioritize efficiency over maximum power output
• You are building a compact system with modest hardware

Skip if

• You require high wattage for powerful components
• You need fully modular cables for clean builds
• You want Platinum or Titanium efficiency ratings

Verdict: Silverstone 450W SFX Bronze PSU is a modest power solution for small builds. It fits users who need reliable SFX power without the high cost or capacity of premium units.

7 Also great

SilverStone 300W SFX Bronze Power Supply

Best for: Low-power compact PC builds

Wattage

300W

Efficiency Rating

80 Plus Bronze

Fan Size

92mm

Form Factor

SFX

Dimensions

3.94 × 4.92 × 2.5 inches

View on Amazon: SilverStone 300W SFX Bronze Power Supply

This SilverStone unit delivers 300W of continuous power in a compact SFX form factor. It features 80 Plus Bronze efficiency and a silent 92mm fan. The design includes a single +12V rail for stable output. It supports standard SFX mounting and includes an ATX bracket. This power supply suits users building small form factor PCs with low power demands.

Pros

• 300W continuous output rated for 24/7 operation
• 80 Plus Bronze efficiency certification
• Includes ATX mounting bracket for versatility
• Silent 92mm fan operation

Cons

• 300W wattage is too low for high-end gaming rigs
• 80 Plus Bronze efficiency is less efficient than Platinum or Titanium models
• Non-modular cable management limits cable length control

Good fit if

• You are building a compact PC with low power needs
• You need a reliable SFX unit for office or media builds
• You want silent operation for a quiet workspace

Skip if

• You require high wattage for gaming or rendering
• You need maximum efficiency for energy savings
• You want fully modular cables for clean builds

Verdict: SilverStone 300W SFX Bronze PSU is a solid choice for low-power small form factor builds. It fits users who prioritize compact size and silent operation over high performance.

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Frequently asked questions