6 Best Alternatives to the ASRock Steel Legend White 850W (2026)
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
The ASRock Steel Legend White 850W ATX 3.1 PSU delivers high efficiency and modern connectivity for gaming builds. If you are searching for asrock steel legend white 850w alternatives, you may need a different form factor, color, or fan size. This unit features an 80 PLUS Gold rating and a 135 mm fan. Some builders prefer smaller 120 mm fans or specific brand aesthetics. Others might want a lower wattage or a different warranty length. These variations require looking at other models with overlapping specifications.
We selected these alternatives because their specs align with your core needs. Each option supports ATX 3.1 and PCIe 5.1 standards. You will find fully modular designs across the list. The selection includes white and black color options. Some units offer longer warranties or quieter operation. You can compare wattage, dimensions, and efficiency ratings to find the best fit. This approach ensures you get the performance you need without compromising on essential features like cable management or power delivery.
How each alternative compares
MSI MPG 850W Gold ATX 3.1 Power Supply
The MSI MPG 850W Gold ATX 3.1 Power Supply matches the ASRock unit in wattage and efficiency rating. Both offer fully modular designs and 12V-2x6 connectors for modern GPUs. The MSI version weighs slightly more at 7.15 pounds compared to the ASRock's 6.59 pounds. It also features a 10-year warranty, matching the ASRock coverage. This makes it a solid choice if you prefer the MSI brand ecosystem or need a slightly heavier build for stability. The core specifications remain nearly identical, focusing on high-efficiency performance for gaming systems.
Auotac 850W ATX 3.1 Fully Modular PSU
The Auotac 850W ATX 3.1 Fully Modular PSU offers a lighter build at 3.2 pounds, significantly lighter than the ASRock's 6.59 pounds. It shares the same 80 Plus Gold efficiency and ATX 3.1 standard. The Auotac unit is slightly larger in dimensions, measuring 6x6x3.7 inches versus the ASRock's 5.91x5.91x3.39 inches. It includes PCIe 5.1 support and a 12V-2x6 connector. This option suits builders who prioritize weight reduction and compact internal space over the specific aesthetic or fan size of the ASRock model.
Corsair RM850x Shift 850W White ATX Power Supply
The Corsair RM850x Shift 850W White ATX Power Supply matches the ASRock in wattage, efficiency, and modular design. It also supports ATX 3.1 and PCIe 5.1 standards. The Corsair unit is slightly longer at 6.3 inches compared to the ASRock's 5.91 inches. It weighs 3.75 pounds, which is much lighter than the ASRock's 6.59 pounds. This difference may affect cable management and airflow in smaller cases. It is a practical alternative for users who want a white PSU with similar modern connectivity but prefer a lighter chassis.
Corsair RM850x 850W Fully Modular ATX 3.1 PSU
The Corsair RM850x 850W Fully Modular ATX 3.1 PSU differs primarily in form factor orientation. While the ASRock is a standard ATX unit, this Corsair model has compact dimensions of 2.3x5.91x3.39 inches. It shares the same 850W output, fully modular design, and PCIe 5.1 support. The Corsair unit weighs 3.9 pounds, lighter than the ASRock. It is ideal for builders needing a low-profile power supply for compact cases. The core connectivity and efficiency remain comparable, making it a strong choice for space-constrained builds.
Thermaltake Toughpower GX3 850W Gold PSU
The Thermaltake Toughpower GX3 850W Gold PSU features a 120mm fan, whereas the ASRock uses a larger 135mm fan. Both provide 80 Plus Gold efficiency and ATX 3.1 support. The Thermaltake unit is slightly shorter at 5.9 inches compared to the ASRock's 5.91 inches. It offers a 5-year warranty, which is shorter than the ASRock's 10-year coverage. This model suits users who prefer a standard 120mm fan size or have specific airflow requirements. The wattage and connector types remain consistent with the ASRock alternative.
MSI MAG A750GL PCIE5 750W Power Supply
The MSI MAG A750GL PCIE5 750W Power Supply offers lower wattage at 750W compared to the ASRock's 850W. It shares the 80 Plus Gold efficiency and ATX 3.1 standard. The MSI unit is fully modular and includes a 10-year warranty, matching the ASRock. It weighs 6.61 pounds, similar to the ASRock's 6.59 pounds. This option is suitable for users who do not need the full 850W capacity or prefer a slightly lower power output for mid-range builds. The connectivity and efficiency remain comparable.
Quick picks
Our 7 picks
ASRock Steel Legend White 850W ATX 3.1 PSU
Best for: High-efficiency white-themed gaming builds
- Wattage
- 850W
- Efficiency Rating
- 80 PLUS Gold, Cybenetics Platinum
- Modularity
- Full Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 135 mm
View on Amazon: ASRock Steel Legend White 850W ATX 3.1 PSU Affiliate link
The ASRock Steel Legend White Edition SL-850GW is a fully modular ATX 3.1 power supply rated at 850W. It features an 80 PLUS Gold efficiency rating and Cybenetics Platinum certification. The unit includes a 135 mm fan and native PCIe 5.1 12V-2x6 connectors. Its compact dimensions measure 5.91 x 5.91 x 3.39 inches. This model suits builders seeking high efficiency and a white aesthetic for modern gaming rigs.
Pros
- 80 PLUS Gold efficiency with Cybenetics Platinum certification
- Fully modular design for clean cable management
- Native PCIe 5.1 12V-2x6 connector support
- 135 mm fan for quiet operation
- 10-year global warranty coverage
Cons
- Heavier build at 6.59 pounds compared to lighter competitors
- Not compatible with all built-in computers or systems
- Limited to ATX form factor only
Good fit if
- You need a fully modular PSU for a custom white build
- You require native PCIe 5.1 support for new GPUs
- You value long-term warranty protection
Skip if
- You are building in a case that cannot fit 5.91-inch depth
- You need a smaller 750W unit for a compact case
- You prefer a non-modular design for simplicity
Verdict: ASRock Steel Legend White 850W delivers top-tier efficiency and modern connectivity for high-end builds. It is the right choice for enthusiasts who prioritize certification standards and long-term reliability over minimal weight.
MSI MPG 850W Gold ATX 3.1 Power Supply
Best for: modern gaming PCs with PCIe 5.1 GPUs
- Wattage
- 850W
- Efficiency Rating
- 80+ Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Warranty
- 10 Year
View on Amazon: MSI MPG 850W Gold ATX 3.1 Power Supply Affiliate link
This is an 850W fully modular power supply built for modern gaming rigs. It meets ATX 3.1 and PCIe 5.1 standards, featuring a native 12V-2x6 connector for new graphics cards. The unit uses 100% Japanese 105°C capacitors and carries an 80 Plus Gold efficiency rating. It is a compact option suitable for users who need reliable power delivery with a 10-year warranty.
Pros
- ATX 3.1 and PCIe 5.1 compatibility
- Native 12V-2x6 connector
- 100% Japanese 105°C capacitors
- 80 Plus Gold efficiency
- 10-year limited warranty
Cons
- Heavier build at 7.15 pounds
- Standard ATX form factor dimensions
- No mention of low-noise fan mode
Good fit if
- You need native PCIe 5.1 support
- You want a 10-year warranty
- You prefer fully modular cabling
Skip if
- You require a smaller SFX form factor
- You need a higher wattage rating
- You prioritize ultra-quiet operation specs
Verdict: MSI MPG A850G 850W ATX 3.1 offers solid specs for gamers needing PCIe 5.1 readiness. It suits those who value long-term reliability through Japanese capacitors and a decade of coverage.
Auotac 850W ATX 3.1 Fully Modular PSU
Best for: Builders wanting included management tools
- Wattage
- 850W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 140mm
View on Amazon: Auotac 850W ATX 3.1 Fully Modular PSU Affiliate link
The Auotac 850W is a fully modular power supply rated for 80 PLUS Gold efficiency. It supports ATX 3.1 and PCIe 5.1 standards with a native 12V-2x6 connector. A 140mm fan and Japanese capacitors help maintain stability. The dual-color cable aids in proper installation. This unit suits builders who want modern GPU support and tidy cable management.
Pros
- 80 PLUS Gold efficiency rating
- Supports ATX 3.1 and PCIe 5.1
- Native 12V-2x6 connector
- 140mm fan for quiet operation
- Includes PSU tester and cable comb
Cons
- Brand has lower market recognition than competitors
- Non-standard dimensions may not fit all cases
- ARGB lighting may not sync with other components
Good fit if
- You need native PCIe 5.1 support for new GPUs
- You prefer a 140mm fan for quieter operation
- You want included tools for cable management
Skip if
- You require a widely recognized brand name
- You need strict ATX 3.0 compatibility
- You want a standard 150mm width case fit
Verdict: Auotac 850W ATX 3.1 Gold PSU provides modern connectivity and efficiency for users prioritizing cable management tools and quiet operation over brand prestige.
Corsair RM850x Shift 850W White ATX Power Supply
Best for: standard mid-tower builds needing PCIe 5.1
- Wattage
- 850W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- PCIe 5.1
- Dimensions
- 6.3 × 5.91 × 3.39 inches
View on Amazon: Corsair RM850x Shift 850W White ATX Power Supply Affiliate link
The Corsair RM850x Shift is a fully modular 850W power supply built for modern systems. It carries an 80 Plus Gold efficiency rating and supports ATX 3.1 standards with native PCIe 5.1 connectors. The unit measures 6.3 inches in length and weighs 3.75 pounds. It operates with zero RPM fan noise at low loads. This design suits builders who need reliable power delivery for high-end graphics cards.
Pros
- 80 Plus Gold efficiency rating
- Fully modular cable design
- Supports ATX 3.1 standard
- Native PCIe 5.1 connectivity
Cons
- 6.3-inch length may not fit small cases
- 3.75-pound weight adds to chassis load
- White color may not match all builds
Good fit if
- You need native PCIe 5.1 support for new GPUs
- You want high efficiency for lower power costs
- You prefer fully modular cables for clean builds
Skip if
- You have a small form factor case with tight length limits
- You require a black power supply for dark builds
- You need a budget option under the mid-range tier
Verdict: Corsair RM850x Shift 850W ATX 3.1 delivers solid efficiency and modern connectivity for standard mid-tower cases. It fits users who prioritize gold efficiency and PCIe 5.1 support over compact dimensions.
Corsair RM850x 850W Fully Modular ATX 3.1 PSU
Best for: Quiet builds with modern GPU requirements
- Wattage
- 850W
- Efficiency Rating
- Cybenetics Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- PCIe Version
- PCIe 5.1
View on Amazon: Corsair RM850x 850W Fully Modular ATX 3.1 PSU Affiliate link
The Corsair RM850x is a fully modular ATX 3.1 power supply rated for 850W. It supports PCIe 5.1 with a native 12V-2x6 connector. The unit carries a Cybenetics Gold efficiency rating. It measures 3.39 by 5.91 by 2.3 inches and weighs 3.9 pounds. This model suits users who prioritize quiet operation and modern compatibility for high-end graphics cards.
Pros
- Fully modular cable design
- ATX 3.1 compliance
- Native PCIe 5.1 12V-2x6 support
- Cybenetics Gold efficiency certification
Cons
- Cybenetics Gold rating is slightly lower than the 80 Plus Gold standard used by some competitors
- Black color may not match white-themed builds
- Heavier than some compact alternatives in the list
Good fit if
- You need a quiet PSU with low-noise certification
- You are building an ATX 3.1 compatible system
- You require a fully modular design for clean cable management
Skip if
- You require a white color scheme for your build
- You need the highest possible efficiency rating available
- You are building a compact ITX system with strict weight limits
Verdict: Corsair RM850x Low-Noise ATX 3.1 delivers reliable 850W output with modern PCIe 5.1 support. It fits users who value quiet operation and clean interiors over aesthetic matching or maximum efficiency ratings.
Thermaltake Toughpower GX3 850W Gold PSU
Best for: Standard ATX cases with PCIe 5.1 GPUs
- Wattage
- 850W
- Efficiency Rating
- 80 Plus Gold
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 120mm
- Warranty
- 5 Year
View on Amazon: Thermaltake Toughpower GX3 850W Gold PSU Affiliate link
The Thermaltake Toughpower GX3 850W is an ATX 3.1 power supply featuring native PCIe 5.1 support and 80 Plus Gold efficiency. It uses a 120mm fluid dynamic bearing fan for cooling and includes a 12V-2x6 connector for modern graphics cards. This unit suits builders who prioritize standard ATX dimensions and reliable 850W output for high-end gaming systems.
Pros
- ATX 3.1 standard compatibility
- Native PCIe 5.1 12V-2x6 connector
- 120mm fluid dynamic bearing fan
- 80 Plus Gold efficiency rating
- 5-year warranty coverage
Cons
- Standard 120mm fan size is larger than the 120mm fan badge implies for compact builds
- Black cable color may not match white-themed builds
- Larger physical footprint compared to shift-style compact designs
Good fit if
- You need a standard ATX form factor for your case
- You require native PCIe 5.1 support for new GPUs
- You prefer 80 Plus Gold efficiency for power savings
Skip if
- You require a white cable color for aesthetic matching
- You need a compact SFX or shift-style form factor
- You are building a system under 750W requirements
Verdict: The Thermaltake Toughpower GX3 850W is a solid choice for standard ATX cases needing PCIe 5.1 readiness. It fits builders who value gold efficiency and a 120mm fan for cooling.
MSI MAG A750GL PCIE5 750W Power Supply
Best for: Standard ATX gaming PCs needing PCIe 5.1
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Warranty
- 10 Year
View on Amazon: MSI MAG A750GL PCIE5 750W Power Supply Affiliate link
The MSI MAG A750GL is a 750W fully modular power supply built for modern gaming rigs. It carries an 80 PLUS Gold efficiency rating and supports ATX 3.1 and PCIe 5.1 standards. The unit features a native 12V-2x6 connector for direct GPU power. It measures 12 inches in length and includes a 10-year warranty. This compact design suits builders who need reliable power without excessive bulk.
Pros
- 80 PLUS Gold efficiency rating
- ATX 3.1 and PCIe 5.1 support
- Native 12V-2x6 connector
- Fully modular cable design
- 10-year limited warranty
Cons
- 750W output is lower than the 850W options on this list
- Black color may not match white-themed builds
- 12-inch length is longer than some compact alternatives
Good fit if
- You need PCIe 5.1 support for newer graphics cards
- You prefer a fully modular design for cleaner cable management
- You want a 10-year warranty for long-term reliability
Skip if
- You require 850W or higher wattage for extreme overclocking
- You are building a white-themed PC and need matching components
- You have a small form factor case with strict length limits
Verdict: MSI MAG A750GL 750W ATX 3.1 offers solid efficiency and modern connectivity for mid-range gaming builds. It is a practical choice for users who prioritize reliability and standard ATX dimensions over maximum wattage.
Specifications side by side
| Spec | ASRock Steel Legend White 850W ATX 3.1 PSU | MSI MPG 850W Gold ATX 3.1 Power Supply | Auotac 850W ATX 3.1 Fully Modular PSU | Corsair RM850x Shift 850W White ATX Power Supply | Corsair RM850x 850W Fully Modular ATX 3.1 PSU | Thermaltake Toughpower GX3 850W Gold PSU | MSI MAG A750GL PCIE5 750W Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 850W | 850W | 850W | 850W | 850W | 850W | 750W |
| Efficiency Rating | 80 PLUS Gold, Cybenetics Platinum | 80+ Gold | 80 PLUS Gold | 80 Plus Gold | Cybenetics Gold | 80 Plus Gold | 80 PLUS Gold |
| Modularity | Full Modular | Fully Modular | Fully Modular | Fully Modular | Fully Modular | not stated | Fully Modular |
| ATX Version | ATX 3.1 | ATX 3.1 | ATX 3.1 | ATX 3.1 | ATX 3.1 | ATX 3.1 | ATX 3.1 |
| PCIe Connector Type | 12V-2x6 | 12V-2x6 | 12V-2x6 | PCIe 5.1 | 12V-2x6 | 12V-2x6 | 12V-2x6 |
| Fan Size | 135 mm | not stated | 140mm | not stated | not stated | 120mm | not stated |
| Warranty | 10 Years | 10 Year | 10-Year | not stated | not stated | 5 Year | 10 Year |
| Form Factor | ATX | ATX | ATX | ATX | ATX | ATX | ATX |
| PCIe Version | not stated | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 |
| Recommended Use | not stated | Gaming | not stated | not stated | not stated | not stated | Gaming |
| Connector | 12V-2x6 Connector | 12V-2x6 Connector | 12V-2x6 Connector | not stated | 12V-2x6 Connector | 12V-2x6 Connector | 12V-2x6 Connector |
| Size | 850W | 850W | 850W | 850W | 850W | 850W | 750W (PCIE 5) |
| Dimensions | 5.91 × 5.91 × 3.39 inches | 5.91 × 5.91 × 3.39 inches | 6 × 6 × 3.7 inches | 6.3 × 5.91 × 3.39 inches | 2.3 × 3.39 × 5.91 inches | 5.9 × 5.5 × 3.4 inches | 12 × 9 × 5 inches |
| Weight | 6.59 pounds | 7.15 pounds | 3.2 pounds | 3.75 pounds | 3.9 pounds | not stated | 6.61 pounds |
| Color | Multicolor | not stated | White | White | Black | Black | Black |
| Model | SL-850GW | MPG A850G PCIE 5 | not stated | not stated | not stated | PS-TPD-0850NNFAGU-3 | 306-7ZP8B11-CE0 |
Frequently asked questions
Which PSU offers the lowest weight for easy installation?
The Auotac 850W ATX 3.1 Fully Modular PSU is the lightest option at 3.2 pounds. Its compact 6x6x3.7-inch dimensions and white color make it ideal for builders who prioritize minimal weight and clean aesthetics. This unit provides PCIe 5.1 support without adding unnecessary bulk to your build.
What are the best white-themed power supply alternatives?
You can choose the Corsair RM850x Shift 850W White ATX Power Supply or the Auotac 850W ATX 3.1 Fully Modular PSU. Both units feature white coloring and fully modular designs. They support ATX 3.1 standards and include 12V-2x6 connectors, ensuring compatibility with modern graphics cards while maintaining a cohesive white aesthetic.
Which model includes a 120mm fan for cooling?
The Thermaltake Toughpower GX3 850W Gold PSU features a 120mm fan. This larger fan size supports its 80 Plus Gold efficiency rating and ATX 3.1 compliance. It is designed for standard ATX cases and includes a 12V-2x6 connector, making it a practical choice for users who prefer specific cooling components.
Are there options with a decade-long warranty?
Yes, the MSI MPG 850W Gold ATX 3.1 Power Supply and the MSI MAG A750GL PCIE5 750W Power Supply both include a 10-year warranty. These models offer solid efficiency ratings and fully modular designs. They are suitable for gaming builds that require long-term reliability and modern PCIe 5.1 connectivity standards.
Which PSU is best for quiet operation?
The Corsair RM850x 850W Fully Modular ATX 3.1 PSU is optimized for quiet builds. It delivers reliable 850W output with modern PCIe 5.1 support. This black unit features a low-noise design that prioritizes acoustic performance over aesthetic matching, making it a practical choice for users who value silence in their gaming PCs.
What is the difference between the Corsair RM850x Shift and the standard RM850x?
The Corsair RM850x Shift 850W White ATX Power Supply is white and measures 6.3 inches in length. In contrast, the standard Corsair RM850x 850W Fully Modular ATX 3.1 PSU is black and shorter at 2.3 inches in length. Both support ATX 3.1 and PCIe 5.1, but they differ in color and physical dimensions.