Looking Beyond the Segotep 850W ATX 3.1 Gold? 6 Alternatives Worth a Look

Comparing these alternatives

MSI MAG 850W Fully Modular ATX Power Supply

The MSI MAG 850W is a fully modular unit with an 80 Plus Gold efficiency rating, matching the Segotep GM850. It supports ATX 3.1 and PCIe 5.1 standards, ensuring compatibility with modern graphics cards. The primary difference lies in physical dimensions. The MSI model measures 12 inches in length, which is significantly longer than the Segotep’s 5.91-inch chassis. This larger footprint may not fit smaller cases. However, it includes a 10-year warranty, offering longer coverage than the Segotep. You should choose this if you have ample space in your case and prioritize extended warranty protection over compact sizing.

Corsair RM850x Shift 850W White ATX Power Supply

The Corsair RM850x Shift White shares the 850W output, 80 Plus Gold efficiency, and ATX 3.1 specification with the Segotep GM850. It also supports PCIe 5.1 for new GPUs. The key distinction is its white color scheme, contrasting with the Segotep’s black finish. This makes it a better fit for white-themed builds. The Corsair unit weighs 3.75 pounds, which is lighter than the Segotep’s 5.29 pounds. Its dimensions are slightly different, with a length of 6.3 inches compared to the Segotep’s 5.91 inches. Select this alternative if you need a white power supply for aesthetic consistency while maintaining similar performance specifications.

Corsair RM750x Shift White 750W ATX Power Supply

The Corsair RM750x Shift offers 750W of power, which is lower than the Segotep GM850’s 850W. It retains the ATX 3.1 standard and PCIe 5.1 support, along with 80 Plus Gold efficiency. This model is designed for compact builds where space is limited. It features side-mounted connectors, which can improve cable management compared to the rear-mounted connectors on the Segotep. The physical dimensions are similar, measuring 6.3 inches in length. You should consider this unit if your system does not require the full 850W output and you value cleaner cable routing in a tight chassis. The lower wattage may limit future GPU upgrades.

Redragon 850W 80+ Gold ATX 3.1 RGB PSU

The Redragon 850W PSU matches the Segotep GM850 in wattage, 80 Plus Gold efficiency, and ATX 3.1 compliance. It also supports PCIe 5.1. The main difference is its physical size. The Redragon unit is much larger, measuring 11.8 inches in length, compared to the Segotep’s 5.91 inches. It also weighs more at 5.69 pounds versus 5.29 pounds. The Redragon features a white finish and RGB lighting, whereas the Segotep is black without mentioned lighting effects. Choose this alternative if you have a large case that can accommodate the extended length and prefer a white aesthetic with customizable lighting features.

MSI MPG 850W Gold ATX 3.1 Power Supply

The MSI MPG 850W Gold provides the same 850W output, 80 Plus Gold efficiency, and ATX 3.1 standard as the Segotep GM850. It supports PCIe 5.1 for modern graphics cards. This unit is fully modular, similar to the Segotep. The MSI model is heavier, weighing 7.15 pounds compared to the Segotep’s 5.29 pounds. Its dimensions are identical in length at 5.91 inches, but it is slightly taller at 3.39 inches versus 3.35 inches. It includes a 10-year warranty, offering longer coverage than the Segotep. Pick this option if you prioritize a longer warranty period and do not mind the additional weight in your build.

Thermaltake Toughpower GF3 1000W ATX 3.1

The Thermaltake Toughpower GF3 offers 1000W of power, which is higher than the Segotep GM850’s 850W. It shares the ATX 3.1 specification and PCIe 5.1 support. This unit is designed for high-wattage builds that require extra headroom for power-hungry components. It is fully modular, matching the Segotep’s connectivity flexibility. The physical dimensions are similar, with a length of 6.3 inches compared to the Segotep’s 5.91 inches. It weighs 3.95 pounds, which is lighter than the Segotep. Choose this alternative if your system demands more than 850W for future-proofing or high-end graphics cards, while maintaining similar form factor constraints.

Quick picks

Our 7 picks

1 Best overall

Segotep 850W ATX 3.1 Gold Power Supply

Best for: Modern gaming PCs with high-end GPUs

Wattage

850W

Efficiency Rating

80 PLUS Gold

Modularity

Fully Modular

ATX Version

ATX 3.1

PCIe Connector Type

12VHPWR

PCIe Version

PCIe 5.1

View on Amazon: Segotep 850W ATX 3.1 Gold Power Supply

The Segotep GM850 is an 850W fully modular power supply built for modern GPUs. It carries 80 Plus Gold efficiency and supports ATX 3.1 standards. The unit includes a native 12VHPWR cable for PCIe 5.1 graphics cards. It handles significant power excursions to protect your hardware. This PSU suits builders who need stable +12V output and clean cable management for their gaming rigs.

Pros

• 80 Plus Gold efficiency rating
• ATX 3.1 and PCIe 5.1 support
• Native 12VHPWR cable for 600W GPUs
• Fully modular design with flat cables
• Handles 200% total power excursion

Cons

• Standard ATX form factor size
• Black cable color option only
• No display or software monitoring

Good fit if

• You are building a PC with a high-end NVIDIA RTX 40-series or newer GPU
• You want efficient power delivery for a gaming setup
• You prefer fully modular cables for cleaner builds

Skip if

• You need a compact SFX power supply for a small form factor case
• You require a 1000W or higher wattage for extreme overclocking
• You prefer white cables to match a specific aesthetic

Verdict: The Segotep GM850 850W ATX 3.1 Gold delivers reliable power for modern graphics cards. It fits users who prioritize efficiency and native PCIe 5.1 connectivity in a standard ATX case.

2 Best budget

MSI MAG 850W Fully Modular ATX 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 MAG 850W Fully Modular ATX Power Supply

The MSI MAG A850GL is a fully modular 850W power supply designed for gaming systems. It meets ATX 3.1 standards and supports PCIe 5.1 with a native 12V-2x6 connector. This unit delivers 80 Plus Gold efficiency. It measures 12 inches long, 8.75 inches wide, and 4.92 inches high. You get a 10-year warranty with this compact build.

Pros

• 850W output capacity for high-end builds
• Native 12V-2x6 connector for PCIe 5.1 GPUs
• 80 Plus Gold efficiency rating
• Fully modular cable design
• 10-year warranty coverage

Cons

• 12-inch length may not fit small cases
• 8.75-inch width is wider than standard ATX units
• No mention of fan noise or temperature thresholds

Good fit if

• You need native support for the latest PCIe 5.1 graphics cards
• You want a fully modular unit with a long warranty
• Your case can accommodate a 12-inch long power supply

Skip if

• You are building in a compact case with strict length limits
• You need a power supply narrower than 8.75 inches
• You prefer a lower wattage unit for basic setups

Verdict: MSI MAG A850GL 850W ATX 3.1 provides reliable power and modern connectivity for gamers who have the space for its physical dimensions. It is a solid choice for new builds requiring PCIe 5.1 support.

3 Also great

Corsair RM850x Shift 850W White ATX Power Supply

Best for: White builds needing PCIe 5.1 support

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

This Corsair unit delivers 850W of power with 80 Plus Gold efficiency. It supports ATX 3.1 and PCIe 5.1 standards for modern GPUs. The fully modular design helps manage cable clutter. You get a white finish that fits clean builds. It measures 6.3 inches long and weighs 3.75 pounds. This model suits users who want reliable power and a compact form factor.

Pros

• 80 Plus Gold efficiency rating
• ATX 3.1 and PCIe 5.1 support
• Fully modular cable design
• White color finish

Cons

• Larger physical footprint than shift-style competitors
• Heavier weight at 3.75 pounds
• No mention of zero-RPM fan mode in specs

Good fit if

• You need native PCIe 5.1 connectivity
• You prefer a white PSU for aesthetics
• You want 80 Plus Gold efficiency

Skip if

• You require the smallest possible case compatibility
• You need a silent fan mode specification
• You prefer a black PSU finish

Verdict: Corsair RM850x Shift White offers solid 850W output with modern PCIe 5.1 support. It fits builders who value efficiency and a white aesthetic over ultra-compact dimensions.

4 Best premium

Corsair RM750x Shift White 750W ATX Power Supply

Best for: Compact builds needing 750W and side connectors

Wattage

750W

Efficiency Rating

80 Plus Gold

Modularity

Fully Modular

ATX Version

ATX 3.1

Fan Size

140mm

PCIe Version

PCIe 5.1

View on Amazon: Corsair RM750x Shift White 750W ATX Power Supply

The Corsair RM750x Shift is a 750W fully modular power supply with 80 Plus Gold efficiency. It supports ATX 3.1 and PCIe 5.1 standards. Side-mounted connectors simplify cable management. A 140mm fan ensures quiet operation. This unit suits builders seeking compact, efficient power for modern graphics cards.

Pros

• 750W output with 80 Plus Gold efficiency
• ATX 3.1 and PCIe 5.1 certified
• Side-mounted modular connections for easier access
• 140mm fluid dynamic bearing fan for low noise

Cons

• Lower wattage than the 850W alternatives on this list
• Slightly heavier at 3.75 pounds compared to competitors
• Side-mounted connectors may not fit all case designs

Good fit if

• You need 750W for a mid-range build
• You prioritize clean cable management
• You use an ATX 3.1 compatible case

Skip if

• You require more than 750W of power
• You prefer standard rear-mounted connectors
• You need a 1000W unit for high-end GPUs

Verdict: Corsair RM750x Shift 750W ATX 3.1 offers efficient power and side-mounted connectivity for builders who value cable management over higher wattage.

5 Also great

Redragon 850W 80+ Gold ATX 3.1 RGB PSU

Best for: compact cases with modern GPUs

Wattage

850 Watt

Efficiency Rating

80+ Gold

Modularity

Fully Modular

ATX Version

ATX 3.1

PCIe Connector Type

12V-2x6

PCIe Version

PCIe 5.1

View on Amazon: Redragon 850W 80+ Gold ATX 3.1 RGB PSU

This Redragon 850W unit delivers 80 Plus Gold efficiency and supports ATX 3.1 with native PCIe 5.1 12V-2x6 connectors. Its compact 160mm depth fits snugly in smaller cases, while fully modular cabling keeps builds clean. The zero-RPM silent mode ensures quiet operation at low loads, making it a practical choice for gamers seeking stable power without excess bulk.

Pros

• Native PCIe 5.1 12V-2x6 connector for modern GPUs
• Compact 160mm depth fits small cases
• Fully modular design for cleaner cable management
• Zero-RPM silent mode under 60°C

Cons

• Includes RGB lighting which may not suit all builds
• Heavier at 5.69 pounds compared to non-RGB variants
• Limited to white color option in this variation

Good fit if

• You need a compact PSU for a small form factor case
• You want native PCIe 5.1 support for RTX 40/50 series GPUs
• You prefer silent operation during light gaming or idle

Skip if

• You require a non-RGB aesthetic for a minimalist build
• You need a power supply in colors other than white
• You prefer a lighter unit under 5 pounds

Verdict: Redragon 850W ATX 3.1 Gold PSU offers solid efficiency and compact dimensions for small builds. It suits gamers who value native PCIe 5.1 support and silent idle operation, provided you accept the RGB lighting and white finish.

6 Also great

MSI MPG 850W Gold ATX 3.1 Power Supply

Best for: Compact gaming builds needing 850W

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

The MSI MPG A850G is a fully modular 850W power supply certified at 80 Plus Gold. It supports ATX 3.1 and PCIe 5.1 standards, featuring a native 12V-2x6 connector for modern graphics cards. The unit uses 100% Japanese 105°C capacitors and includes a 10-year warranty. Its compact dimensions make it suitable for smaller cases, offering reliable power for gaming builds.

Pros

• 80 Plus Gold efficiency rating
• Native 12V-2x6 PCIe connector
• 10-year limited warranty
• 100% Japanese 105°C capacitors
• Fully modular cable design

Cons

• Heavier at 7.15 pounds
• Slightly wider at 5.91 inches
• Lower wattage than 1000W alternatives

Good fit if

• You need a compact PSU for a small form factor case
• You want a 10-year warranty for long-term reliability
• You are building a mid-range gaming PC

Skip if

• You require 1000W or higher output
• You prefer a standard full-size ATX form factor
• You need a lower cost option

Verdict: MSI MPG A850G 850W ATX 3.1 PSU is a solid choice for gamers who prioritize compact dimensions and long-term component quality. It fits users who need reliable 850W output with modern PCIe 5.1 support.

7 Best 1000w

Thermaltake Toughpower GF3 1000W ATX 3.1

Best for: High-wattage builds requiring ATX 3.1

Wattage

1000W

Efficiency Rating

80 Plus Gold

Modularity

Full Modular

ATX Version

ATX 3.1

PCIe Connector Type

12V-2x6

Fan Size

135mm

View on Amazon: Thermaltake Toughpower GF3 1000W ATX 3.1

This 1000W power supply meets ATX 3.1 standards and includes a native PCIe 5.1 12V-2x6 connector. It features a 135mm fan and full modularity with flat, color-matched cables. The unit handles significant power excursions for modern GPUs. You get an 80 Plus Gold efficiency rating in a standard ATX form factor. This model suits builds requiring higher wattage than the 850W options on the list.

Pros

• 1000W output capacity
• Native PCIe 5.1 12V-2x6 connector
• 135mm cooling fan
• Full modular flat cables
• ATX 3.1 compliance

Cons

• Larger physical footprint than 850W units
• Heavier at 3.95 pounds
• Standard ATX size may not fit small cases

Good fit if

• You need 1000W for high-end GPUs
• You want ATX 3.1 native support
• You prefer flat, color-matched cables

Skip if

• Your case only fits 850W units
• You need a compact SFX form factor
• You prefer 850W wattage

Verdict: Thermaltake Toughpower GF3 1000W ATX 3.1 fits users needing extra headroom for power-hungry graphics cards. It offers modern connectivity and cable management in a standard chassis.

Specifications side by side

Frequently asked questions

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