Looking Beyond the Auotac 850W ATX 3.1 Fully? 6 Alternatives Worth a Look
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You might be looking at auotac 850w fully modular power alternatives because the original unit has specific traits you want to compare. The Auotac 850W ATX 3.1 Fully Modular PSU offers 80 PLUS Gold efficiency and a 140mm fan for quiet operation. It includes a 12V-2x6 connector for modern GPUs and comes with a 10-year warranty. These specs make it a solid choice for clean builds and high-end graphics cards.
However, you may need different dimensions or a distinct brand reputation. Some builders prefer a 120mm fan for standard cases or a smaller footprint for compact chassis. The alternatives listed here share key specifications with the Auotac model, such as ATX 3.1 compliance and PCIe 5.1 support. They also match the 850W wattage and Gold efficiency rating. This list helps you find units with overlapping features while offering variations in size, fan configuration, or warranty terms to suit your specific build requirements.
How these alternatives differ from the Auotac
MSI MPG 850W Gold ATX 3.1 Power Supply
The MSI MPG 850W Gold shares the 80 PLUS Gold efficiency and ATX 3.1 standard, but it uses a slightly smaller 120mm fan compared to the Auotac’s 140mm design. This makes the MSI unit quieter under light loads, though it weighs more at 7.15 pounds. It also includes a 10-year warranty, matching the Auotac’s term. You should choose this if you prefer a proven brand with a compact form factor and do not need the extra airflow capacity of a larger fan. The dimensions are nearly identical to the Auotac, ensuring it fits in most standard ATX cases without issue.
Corsair RM850x Shift 850W White ATX Power Supply
The Corsair RM850x Shift offers the same 80 PLUS Gold efficiency and ATX 3.1 compliance as the Auotac. However, it features a unique low-profile design that is shorter in height, making it suitable for smaller cases where the Auotac’s 3.7-inch height might be restrictive. It weighs less at 3.75 pounds and retains full modularity. You should pick this unit if case compatibility is your primary concern. The trade-off is a potentially higher price point and a different connector layout that may require specific cable management strategies. It is ideal for builders who need maximum flexibility in tight spaces.
Corsair RM850x 850W Fully Modular ATX 3.1 PSU
The Corsair RM850x 850W Fully Modular PSU matches the Auotac in wattage and 80 PLUS Gold efficiency. It differs by using a 120mm fan, which may spin faster under load compared to the Auotac’s larger 140mm fan. This unit is often priced lower, making it a budget-friendly option for similar performance. It weighs slightly more at 3.9 pounds. You should consider this if you want a reputable brand with a lower cost. The main difference is the fan size, which affects noise levels at high loads. It is best for users who prioritize cost savings over maximum quietness.
Thermaltake Toughpower GX3 850W Gold PSU
The Thermaltake Toughpower GX3 850W Gold uses a 120mm fan, unlike the Auotac’s 140mm fan. It offers the same 80 PLUS Gold efficiency and ATX 3.1 support. However, it comes with a shorter 5-year warranty compared to the Auotac’s 10-year coverage. It weighs less and is often more affordable. You should choose this if you need a reliable unit with a lower upfront cost and do not mind the shorter warranty period. The 120mm fan may be louder under heavy loads. It is a practical choice for standard builds where budget and proven reliability are key factors.
MSI MAG A750GL PCIE5 750W Power Supply
The MSI MAG A750GL PCIE5 750W Power Supply provides 750W instead of 850W, which may be insufficient for high-end GPUs. It shares the 80 PLUS Gold efficiency and ATX 3.1 standard. It features a 10-year warranty, matching the Auotac. This unit is smaller in wattage but often lighter and more affordable. You should pick this if your system does not require 850W and you want a compact, efficient unit. The lower wattage limits its use in extreme gaming or workstation setups. It is best for mid-range builds where power savings and modern connectivity are priorities over maximum headroom.
ASRock Steel Legend White 850W ATX 3.1 PSU
The ASRock Steel Legend White 850W ATX 3.1 PSU matches the Auotac in wattage, efficiency, and modularity. It uses a 120mm fan, which may be noisier under load than the Auotac’s 140mm fan. It offers a 10-year warranty, similar to the Auotac. This unit is often priced competitively for white-themed builds. You should choose this if you prefer a white aesthetic and a trusted brand. The main difference is the fan size and potentially higher noise levels. It is ideal for users who want a clean look without sacrificing modern connectivity standards or warranty coverage.
Quick picks
Our 7 picks
Auotac 850W ATX 3.1 Fully Modular PSU
Best for: Modern gaming builds with high-end GPUs
- 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 with 80 PLUS Gold efficiency and ATX 3.1 compliance. It features a 140mm fan for quiet operation and native 12V-2x6 connectors for modern GPUs. The included tool kit simplifies setup for beginners. This unit suits builders seeking high efficiency and clean cable management in a standard ATX form factor.
Pros
- 80 PLUS Gold certification for 92% efficiency
- ATX 3.1 and PCIe 5.1 ready
- Native 12V-2x6 connector with color-coded cable
- 140mm fan with silent mode
- Includes PSU tester and cable management tools
Cons
- 10-year warranty is shorter than the 10-year warranty on the Corsair RM850x
- ARGB lighting may not appeal to minimalists
- White color option only, no black variant listed for this specific listing
Good fit if
- You need native PCIe 5.1 support for new graphics cards
- You want a fully modular design to reduce cable clutter
- You value high efficiency ratings for lower heat output
Skip if
- You require a black color option for your build
- You prefer a 120mm fan for compact cases
- You need a warranty longer than 10 years
Verdict: Auotac 850W ATX 3.1 Fully Modular delivers solid efficiency and modern connectivity for gamers upgrading to new GPUs. It is a practical choice for builders who prioritize clean cable management and silent operation.
MSI MPG 850W Gold ATX 3.1 Power Supply
Best for: ATX 3.1 gaming builds 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
The MSI MPG A850G is a fully modular 850W power supply built for modern gaming rigs. It supports ATX 3.1 and PCIe 5.1 standards with a native 12V-2x6 connector. The unit carries an 80 Plus Gold efficiency rating and uses 100% Japanese 105°C capacitors. It includes a 10-year limited warranty. This compact design fits well in smaller cases while delivering reliable power for high-end components.
Pros
- ATX 3.1 and PCIe 5.1 support
- Native 12V-2x6 connector included
- 80 Plus Gold efficiency rating
- 10-year limited warranty
- 100% Japanese 105°C capacitors
Cons
- Heavier build at 7.15 pounds
- Standard ATX form factor dimensions
- No mention of zero-RPM fan mode
Good fit if
- You need native PCIe 5.1 support for new GPUs
- You want a fully modular design with a long warranty
- You prioritize Japanese capacitors for thermal stability
Skip if
- You require a SFX or SFX-L form factor
- You need a higher wattage than 850W
- You prefer a unit with explicit zero-RPM fan control listed
Verdict: MSI MPG A850G 850W ATX 3.1 is a solid choice for gamers upgrading to PCIe 5.1 GPUs who value a 10-year warranty and high-quality capacitors. It suits builders who need standard ATX dimensions but want modern connectivity without extra adapters.
Corsair RM850x Shift 850W White ATX Power Supply
Best for: Modern GPUs with 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 delivers 850W of power with 80 Plus Gold efficiency and ATX 3.1 compliance. It features fully modular cabling and native PCIe 5.1 support for modern GPUs. The unit measures 6.3 inches in length and weighs 3.75 pounds. It offers a compact footprint suitable for various cases. This PSU is ideal for users needing reliable high-wattage performance with clean cable management.
Pros
- 80 Plus Gold efficiency rating
- Fully modular cable design
- ATX 3.1 standard compliance
- Native PCIe 5.1 connector support
Cons
- 6.3-inch length may not fit small cases
- White color limits build aesthetics
- 3.75-pound weight is heavier than average
Good fit if
- You need native PCIe 5.1 support
- You prefer fully modular cabling
- You want 80 Plus Gold efficiency
Skip if
- You have a small form factor case
- You prefer a black color scheme
- You need a compact 5.91-inch width
Verdict: Corsair RM850x Shift ATX 3.1 is a solid choice for builders prioritizing efficiency and modern connector support. It fits users who value modular flexibility and can accommodate its specific dimensions.
Corsair RM850x 850W Fully Modular ATX 3.1 PSU
Best for: quiet high-end gaming builds
- 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 an 850W fully modular power supply built for modern systems. It meets ATX 3.1 standards and supports PCIe 5.1 with a native 12V-2x6 connector. The unit carries a Cybenetics Gold efficiency rating, ensuring reliable power delivery with reduced heat. Measuring 3.39 inches wide and 5.91 inches high, it fits standard cases. This low-noise design suits users prioritizing quiet operation and stable performance for high-end gaming rigs.
Pros
- 850W wattage for high-end builds
- Fully modular cable management
- ATX 3.1 compliance
- Native PCIe 5.1 12V-2x6 support
- Cybenetics Gold efficiency rating
Cons
- Wider 3.39-inch profile may not fit small cases
- Cybenetics Gold is a third-party rating, not standard 80 Plus
- Standard ATX form factor is bulkier than compact alternatives
Good fit if
- You need native support for PCIe 5.1 GPUs
- You prioritize quiet operation with low-noise design
- You want fully modular cables for clean builds
Skip if
- You are building in a small form factor case with tight width limits
- You require a standard 80 Plus Gold certification badge
- You prefer a compact 120mm width design
Verdict: Corsair RM850x Fully Modular ATX 3.1 delivers solid 850W performance with modern PCIe 5.1 support. It is best for builders who value low-noise operation and do not mind a wider chassis footprint.
Thermaltake Toughpower GX3 850W Gold PSU
Best for: quiet operation in standard ATX cases
- 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 designed for modern hardware. It features an 80 Plus Gold efficiency rating and a native 12V-2x6 PCIe 5.1 connector. A 120mm fluid dynamic bearing fan keeps noise levels low. This unit suits builders who prioritize quiet operation and standard ATX dimensions for their next-generation gaming rigs.
Pros
- ATX 3.1 standard compatibility
- 80 Plus Gold efficiency rating
- Native 12V-2x6 PCIe 5.1 connector
- 120mm fluid dynamic bearing fan
Cons
- Standard ATX form factor may not fit small cases
- Black cable color limits aesthetic options
- 5-year warranty is shorter than some competitors
Good fit if
- You need a standard ATX size PSU
- You want quiet operation with a 120mm fan
- You require native PCIe 5.1 support
Skip if
- You need a SFX or SFX-L form factor
- You require a 10-year warranty
- You prefer white or gold cables
Verdict: Thermaltake Toughpower GX3 850W is a reliable standard-size unit for builders who value quiet cooling and modern connector support. It fits well in mid-tower cases where space is not a constraint.
MSI MAG A750GL PCIE5 750W Power Supply
Best for: Gaming PCs needing 750W and 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 fully modular 750W 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 includes a native 12V-2x6 connector for new GPUs. It measures 12 by 9 by 5 inches and weighs 6.61 pounds. This model is suitable for users who want reliable performance with a 10-year warranty.
Pros
- 80 PLUS Gold efficiency certification
- ATX 3.1 and PCIe 5.1 compatibility
- Native 12V-2x6 connector included
- 10-year limited warranty
Cons
- 750W output is lower than the 850W options on this list
- Black color may not match white builds
- No mention of low-noise fan control features
Good fit if
- You need a reliable PSU for a mid-range GPU
- You prefer a fully modular design for clean cable management
- You want a 10-year warranty for long-term peace of mind
Skip if
- You require 850W or more power for high-end GPUs
- You are building a white-themed system
- You need ultra-compact dimensions under 12 inches in length
Verdict: MSI MAG A750GL 750W ATX 3.1 is a solid choice for gamers who prioritize efficiency and modern connectivity standards over maximum wattage.
ASRock Steel Legend White 850W ATX 3.1 PSU
Best for: Compact 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 delivers 850W of power with an 80 PLUS Gold efficiency rating. It features a compact 5.91-inch square form factor and a large 135 mm fan for quiet operation. The fully modular design includes a native 12V-2x6 PCIe connector for modern graphics cards. You get a 10-year warranty and intelligent fan control. This unit suits builders who want a compact, high-efficiency power supply with a white aesthetic.
Pros
- 80 PLUS Gold efficiency rating
- Compact 5.91 x 5.91 x 3.39 inch dimensions
- Large 135 mm FDB fan
- 10-year global warranty
- Fully modular cable management
Cons
- 135 mm fan may not fit in small cases
- Limited compatibility with all built-in systems
- White color limits dark build themes
Good fit if
- You need a compact ATX power supply
- You want a 10-year warranty
- You are building a white-themed PC
Skip if
- You have a very small form factor case
- You prefer a black power supply
- You need a 16-pin native connector
Verdict: ASRock Steel Legend White 850W offers a compact footprint and long warranty for white-themed builds. It fits users who prioritize efficiency and quiet operation in a small case.
Specifications side by side
| Spec | Auotac 850W ATX 3.1 Fully Modular PSU | MSI MPG 850W Gold ATX 3.1 Power Supply | 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 | ASRock Steel Legend White 850W ATX 3.1 PSU |
|---|---|---|---|---|---|---|---|
| Wattage | 850W | 850W | 850W | 850W | 850W | 750W | 850W |
| Efficiency Rating | 80 PLUS Gold | 80+ Gold | 80 Plus Gold | Cybenetics Gold | 80 Plus Gold | 80 PLUS Gold | 80 PLUS Gold, Cybenetics Platinum |
| Modularity | Fully Modular | Fully Modular | Fully Modular | Fully Modular | not stated | Fully Modular | Full 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 | PCIe 5.1 | 12V-2x6 | 12V-2x6 | 12V-2x6 | 12V-2x6 |
| Fan Size | 140mm | not stated | not stated | not stated | 120mm | not stated | 135 mm |
| Warranty | 10-Year | 10 Year | not stated | not stated | 5 Year | 10 Year | 10 Years |
| Form Factor | ATX | Compact | ATX | ATX | ATX | Compact | ATX |
| PCIe Version | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | PCIe 5.1 | not stated |
| Recommended Use | not stated | Gaming | not stated | not stated | not stated | Gaming | not stated |
| Connector | 12V-2x6 Connector | 12V-2x6 Connector | not stated | 12V-2x6 Connector | 12V-2x6 Connector | 12V-2x6 Connector | 12V-2x6 Connector |
| Size | 850W | 850W | 850W | 850W | 850W | 750W (PCIE 5) | 850W |
| Dimensions | 6 × 6 × 3.7 inches | 5.91 × 5.91 × 3.39 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 | 5.91 × 5.91 × 3.39 inches |
| Weight | 3.2 pounds | 7.15 pounds | 3.75 pounds | 3.9 pounds | not stated | 6.61 pounds | 6.59 pounds |
| Color | White | not stated | White | Black | Black | Black | Multicolor |
| Model | not stated | MPG A850G PCIE 5 | not stated | not stated | PS-TPD-0850NNFAGU-3 | 306-7ZP8B11-CE0 | SL-850GW |
If you are comparing other models, see our kislot power recliner alternatives for more options.
Frequently asked questions
Which 850W PSU has the best warranty?
The MSI MPG 850W Gold and the MSI MAG A750GL both offer a 10-year warranty. This is the longest coverage among the listed options. The Thermaltake Toughpower GX3 provides a 5-year warranty. Other models do not list specific warranty terms in their published specifications.
Are all these units fully modular?
Most listed units are fully modular. The Auotac 850W, MSI MPG 850W, Corsair RM850x Shift, Corsair RM850x, and MSI MAG A750GL are fully modular. The Thermaltake Toughpower GX3 and ASRock Steel Legend White are also listed as fully modular. This allows you to connect only the cables you need.
Do these PSUs support the latest GPU connectors?
Yes, all listed units support the 12V-2x6 connector. They also adhere to the ATX 3.1 standard and PCIe 5.1 specifications. This ensures compatibility with modern high-end graphics cards without requiring external adapters. You get direct native connectivity for your latest GPU.
Which option is best for a white build?
The Auotac 850W and Corsair RM850x Shift are available in white. The ASRock Steel Legend White is also a white option. The MSI MPG 850W is not specified as white. You can choose any of the white units to match a white-themed PC case.
Is there a smaller 750W alternative?
The MSI MAG A750GL is a 750W option. It supports ATX 3.1 and PCIe 5.1 standards. This unit is suitable if you do not need the full 850W output. It maintains the same modern connectivity features as the larger 850W models.
Which PSU is the lightest?
The Auotac 850W is the lightest at 3.2 pounds. The Corsair RM850x Shift weighs 3.75 pounds. The Corsair RM850x weighs 3.9 pounds. The Thermaltake Toughpower GX3 does not list a weight. The MSI units are generally heavier, with the MPG 850W weighing 7.15 pounds.
Do these units have an 80 Plus Gold rating?
Yes, all listed products have an 80 Plus Gold efficiency rating. This includes the Auotac 850W, MSI MPG 850W, Corsair RM850x Shift, Corsair RM850x, Thermaltake Toughpower GX3, MSI MAG A750GL, and ASRock Steel Legend White. This rating ensures high energy efficiency during operation.
Which PSU is best for quiet operation?
The Auotac 850W features a 140mm fan for silent operation. The Thermaltake Toughpower GX3 uses a 120mm fan. The Corsair RM850x is noted for low-noise operation. These units prioritize quiet cooling. You can choose based on your case space and noise preferences.