Montech Gamma II Series 750 Alternatives: 6 Similar Picks Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
You are looking for montech gamma ii series 750 alternatives that match the core strengths of the original unit. The Montech Gamma II 750W delivers 80 Plus Gold efficiency and supports ATX 3.1 standards with a 12V-2x6 connector. It uses Japanese capacitors and includes a 10-year warranty. These specifications make it a reliable choice for modern mid-range builds. However, you might need different dimensions, higher wattage, or a specific color to fit your case or aesthetic preferences. Some users may also prefer a different brand or form factor for better cable management.
We selected 6 similar picks because their published specifications overlap with the original product. The list includes options like the Corsair RM850x Shift and the MSI MPG 850W, which also offer ATX 3.1 compatibility and 80 Plus Gold ratings. You will find fully modular choices for cleaner builds and compact units for Mini ITX cases. Each alternative addresses specific needs such as side-mounted connectors or white coloring. This guide helps you compare these specs directly. You can choose the unit that best fits your hardware requirements and physical constraints.
Our top pick: Montech Gamma II 750W Gold Power Supply.
How each alternative compares
Corsair RM850x Shift 850W White ATX Power Supply
The Corsair RM850x Shift offers 850W of power, which is 150W more than the Montech Gamma II. It shares the 80 Plus Gold efficiency rating and ATX 3.1 compliance. You get a white color option and a standard ATX form factor. The Corsair unit is slightly wider at 5.91 inches compared to the Montech’s 2-inch width. It also includes full modularity. This makes it a better choice if you need extra headroom for high-end GPUs or prefer a white aesthetic. The Montech remains more compact, fitting tighter spaces in smaller cases.
Corsair RM750x Shift White 750W ATX Power Supply
The Corsair RM750x Shift matches the Montech Gamma II at 750W and 80 Plus Gold efficiency. It also supports ATX 3.1 and PCIe 5.1 standards. The key difference is the side-mounted connectors, which aid cable management in smaller cases. The Corsair unit is larger, measuring 5.91 inches wide versus the Montech’s 2-inch width. It features full modularity and a white finish. If you prioritize clean cable routing and modern connector placement over compact dimensions, this is the better option. The Montech is preferable if case space is extremely limited.
Corsair RM1000e 1000W ATX Power Supply
The Corsair RM1000e provides 1000W, significantly more than the Montech’s 750W. Both units hold 80 Plus Gold ratings and feature full modularity. The Corsair is a standard ATX size, measuring 5.51 inches wide, while the Montech is much narrower at 2 inches. The Corsair lacks explicit ATX 3.1 mention in the provided specs but offers substantial power headroom. Choose this if your system demands more than 750W or if you plan to upgrade to power-hungry components later. The Montech is better for builds that do not require such high wattage.
FSP 400W Gold Flex ATX Mini ITX Power Supply
The FSP 400W Gold Flex is designed for Mini ITX builds, unlike the standard ATX Montech Gamma II. It offers 400W, which is much lower than the Montech’s 750W. Both share 80 Plus Gold efficiency. The FSP unit is tiny, measuring 1.6 inches wide and 5.9 inches long. It is fully modular and lightweight. Pick this if you are building a small form factor PC with low power needs. The Montech is unsuitable for Mini ITX cases due to its larger ATX dimensions and higher power output, which may be unnecessary for compact systems.
Redragon 650W 80 Plus Gold Fully Modular Power Supply
The Redragon 650W offers 650W, which is 100W less than the Montech Gamma II. Both are 80 Plus Gold and fully modular. The Redragon unit is larger, measuring 8.66 inches wide and 3.94 inches high, compared to the Montech’s 2-inch width and 2.7-inch height. It lacks explicit ATX 3.1 or PCIe 5.1 support in the data. Choose this if you need a budget-friendly modular option and do not require the latest PCIe connectors. The Montech provides more power and modern connectivity standards for future-proofing.
MSI MPG 850W Gold ATX 3.1 Power Supply
The MSI MPG 850W provides 850W, which is 100W more than the Montech Gamma II. It matches the 80 Plus Gold efficiency and ATX 3.1 standards with a 12V-2x6 connector. The MSI unit is fully modular and features a 10-year warranty, similar to the Montech. It is larger, measuring 5.91 inches wide, while the Montech is 2 inches wide. The MSI is ideal for gaming builds needing extra power and modern connectors. The Montech is a better fit for users who prioritize a compact form factor over higher wattage.
Quick picks
Our 7 picks
Montech Gamma II 750W Gold Power Supply
Best for: mid-range builds needing PCIe 5.1 support
- Wattage
- 750W
- Efficiency Rating
- 80 PLUS Gold
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 135mm
- Warranty
- 10-year
The Montech Gamma II Series 750W delivers 80 Plus Gold efficiency with a 135mm fan and zero RPM mode. It supports ATX 3.1 and PCIe 5.1 with a native 12V-2x6 cable. Japanese capacitors and full protection circuits ensure reliability. This unit suits builders needing modern connector support and quiet operation in a standard ATX form factor.
Pros
- 80 Plus Gold efficiency rating
- ATX 3.1 and PCIe 5.1 ready
- 135mm FDB fan with zero RPM mode
- 10-year warranty coverage
Cons
- 750W output limits high-end GPU builds
- Standard ATX dimensions may not fit small cases
- No mention of digital monitoring features
Good fit if
- You need PCIe 5.1 native support
- You want quiet operation at low loads
- You prefer 80 Plus Gold efficiency
Skip if
- You require more than 750W power
- You need a fully digital interface
- You are building a high-wattage workstation
Verdict: Montech Gamma II 750W Gold ATX 3.1 fits users who need modern PCIe 5.1 support and quiet operation. It is a solid choice for mid-range builds requiring reliable efficiency and a long warranty.
Corsair RM850x Shift 850W White ATX Power Supply
Best for: Modern high-end GPU builds
- 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
The Corsair RM850x Shift is a fully modular 850W power supply designed for modern builds. It meets ATX 3.1 standards and supports PCIe 5.1 connectors for next-generation graphics cards. The unit operates at 80 Plus Gold efficiency and features a zero RPM fan mode for silent operation at low loads. Its white finish and compact dimensions make it a clean fit for contemporary cases.
Pros
- 850W output capacity
- Fully modular cable design
- ATX 3.1 compliance
- PCIe 5.1 native support
- Zero RPM fan mode
Cons
- White color may clash with black builds
- Heavier than some competitors at 3.75 pounds
- Larger physical footprint than standard units
Good fit if
- You need native PCIe 5.1 support
- You prefer a white aesthetic
- You want fully modular cables
Skip if
- You require a black color scheme
- You are building a low-power system
- You need a smaller form factor
Verdict: Corsair RM850x Shift 850W ATX 3.1 suits users upgrading to high-end GPUs who need reliable PCIe 5.1 connectivity and a clean white look.
Corsair RM750x Shift White 750W ATX Power Supply
Best for: Clean cable management and modern PCIe 5.1 support
- 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 certified for ATX 3.1 and PCIe 5.1. It features side-mounted modular connections and micro-fit cables to simplify cable management. A 140mm fan ensures low noise. This unit suits builders who prioritize clean interiors and modern connector standards.
Pros
- ATX 3.1 and PCIe 5.1 certified
- Side-mounted modular connections
- 140mm fluid dynamic bearing fan
- Fully modular micro-fit connectors
Cons
- Heavier than many competitors at 3.75 pounds
- Larger dimensions than standard ATX units
- Only 750W output for high-end builds
Good fit if
- You want side-mounted connectors for easier cable management
- You need ATX 3.1 and PCIe 5.1 support
- You prefer a larger fan for quieter operation
Skip if
- You need more than 750W of power
- You prefer a standard bottom-mounted modular layout
- You want a lighter power supply
Verdict: Corsair RM750x Shift 750W ATX 3.1 fits users who value side-mounted connectors and modern PCIe 5.1 standards. It is a solid choice for mid-to-high-end builds requiring clean cable management.
Corsair RM1000e 1000W ATX Power Supply
Best for: High-end builds needing 1000W power
- Wattage
- 1000 Watt
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fully Modular
- Form Factor
- ATX
- Size
- 1000W
- Dimensions
- 5.91 × 5.51 × 3.39 inches
The Corsair RM1000e is a 1000W ATX power supply with 80 PLUS Gold efficiency. It features fully modular cables and dual EPS12V connectors for high-end builds. The unit measures 5.91 inches in length and weighs 3.66 pounds. This model suits users needing substantial power headroom and low-noise operation for demanding workloads or gaming rigs.
Pros
- 1000W wattage output
- 80 PLUS Gold efficiency rating
- Fully modular cable design
- Dual EPS12V connectors
Cons
- 1000W capacity exceeds the 750W target of the comparison list
- No mention of ATX 3.0 or PCIe 5.1 native support
- Standard ATX form factor may not fit smaller cases
Good fit if
- You need 1000W of power for high-end components
- You prefer fully modular cables for cleaner builds
- You require 80 PLUS Gold efficiency for better energy use
Skip if
- You are building a system that only needs 750W
- You need an ATX 3.0 compatible unit for new GPUs
- You have a small form factor case with strict length limits
Verdict: Corsair RM1000e 1000W Fully Modular offers significant power headroom for users building high-end systems that exceed 750W requirements, provided your case can accommodate its standard ATX dimensions.
FSP 400W Gold Flex ATX Mini ITX Power Supply
Best for: Compact Mini ITX builds with low power needs
- Wattage
- 400W
- Efficiency Rating
- 80 Plus Gold
- PCIe Connector Type
- 6+2 pin
- Fan Size
- 4 cm
- Form Factor
- Mini ITX
- Dimensions
- 5.9 × 1.6 × 3.25 inches
View on Amazon: FSP 400W Gold Flex ATX Mini ITX Power Supply
This FSP unit is a compact 400W power supply designed for Mini ITX builds. It carries an 80 Plus Gold certification, meaning it delivers high efficiency above 90%. The small 4 cm fan keeps noise low while providing necessary airflow. At just 1.6 inches wide, it fits into tight cases where standard ATX units will not. It includes one PCIe 6+2 pin connector for graphics cards.
Pros
- 80 Plus Gold efficiency rating above 90%
- Ultra-compact 1.6 inch width for Mini ITX cases
- Includes a PCIe 6+2 pin connector
- Low noise operation from 4 cm fan
Cons
- 400W wattage limits high-end GPU support
- Single PCIe connector restricts multi-GPU setups
- 4 cm fan may spin faster under load
Good fit if
- You are building a small form factor PC
- You need high efficiency in a tight space
- You use a low-power graphics card
Skip if
- You require more than 400W of power
- You plan to use multiple graphics cards
- You need standard ATX dimensions
Verdict: FSP Mini ITX 400W Gold PSU fits users who prioritize compact size and efficiency for low-power Mini ITX systems. It is not suitable for high-performance gaming rigs requiring more wattage or multiple PCIe connectors.
Redragon 650W 80 Plus Gold Fully Modular Power Supply
Best for: Mid-range builds needing modular gold efficiency
- Wattage
- 650W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Full Modular
- Dimensions
- 9.45 × 8.66 × 3.94 inches
- Weight
- 4.41 pounds
View on Amazon: Redragon 650W 80 Plus Gold Fully Modular Power Supply
The Redragon RGPS-650W delivers 650 watts of power with 80 Plus Gold efficiency. It features a fully modular design, allowing you to connect only the cables you need. The unit uses flat cables for easier management inside your case. It is suitable for mid-range gaming builds that require reliable power delivery without excess wattage.
Pros
- 80 Plus Gold efficiency rating
- Fully modular cable design
- 650W output capacity
- Flat style cables for organization
Cons
- Lower 650W wattage compared to other options
- No mention of ATX 3.0 or PCIe 5.1 support
- Heavier and bulkier than compact alternatives
Good fit if
- You need a reliable 650W power supply
- You prefer fully modular cables for clean builds
- You want 80 Plus Gold efficiency
Skip if
- You require ATX 3.0 compatibility
- You need more than 650W of power
- You prefer a smaller form factor
Verdict: Redragon 650W Gold Modular PSU is a solid choice for gamers who prioritize efficiency and cable management over high wattage or modern PCIe standards. It fits users building mid-range systems that do not require the latest power connectors.
MSI MPG 850W Gold ATX 3.1 Power Supply
Best for: compact high-wattage gaming builds
- Wattage
- 850W
- Efficiency Rating
- 80+ Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Warranty
- 10 Year
The MSI MPG A850G is a fully modular ATX 3.1 power supply rated for 850 watts. It carries an 80 Plus Gold efficiency certification and includes a native 12V-2x6 cable for modern graphics cards. The unit uses 100% Japanese 105°C capacitors and measures 5.91 inches in length. This compact design suits gamers who need reliable high-wattage output without excessive bulk.
Pros
- 850W output capacity
- Native 12V-2x6 PCIe connector
- 80 Plus Gold efficiency
- Fully modular cable design
- 10-year limited warranty
Cons
- Heavier at 7.15 pounds
- Shorter 5.91-inch length may not fit all cases
- ATX 3.1 standard is newer than ATX 2.4
Good fit if
- You need native support for PCIe 5.1 GPUs
- You want a compact 850W unit for smaller cases
- You prefer fully modular cables for cleaner builds
Skip if
- You require a standard ATX 2.4 power supply
- You need more than 850W of total power
- You are building a system with very limited case depth
Verdict: MSI MPG A850G 850W Gold PSU offers a compact, high-efficiency solution for modern gaming rigs. It fits users who prioritize native PCIe 5.1 connectivity and space-saving dimensions in their build.
Specifications side by side
| Spec | Montech Gamma II 750W Gold Power Supply | Corsair RM850x Shift 850W White ATX Power Supply | Corsair RM750x Shift White 750W ATX Power Supply | Corsair RM1000e 1000W ATX Power Supply | FSP 400W Gold Flex ATX Mini ITX Power Supply | Redragon 650W 80 Plus Gold Fully Modular Power Supply | MSI MPG 850W Gold ATX 3.1 Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 750W | 850W | 750W | 1000 Watt | 400W | 650W | 850W |
| Efficiency Rating | 80 PLUS Gold | 80 Plus Gold | 80 Plus Gold | 80 PLUS Gold | 80 Plus Gold | 80 Plus Gold | 80+ Gold |
| Modularity | not specified | Fully Modular | Fully Modular | Fully Modular | not specified | Full Modular | Fully Modular |
| ATX Version | ATX 3.1 | ATX 3.1 | ATX 3.1 | not specified | not specified | not specified | ATX 3.1 |
| PCIe Connector Type | 12V-2x6 | PCIe 5.1 | not specified | not specified | 6+2 pin | not specified | 12V-2x6 |
| Fan Size | 135mm | not specified | 140mm | not specified | 4 cm | not specified | not specified |
| Warranty | 10-year | not specified | not specified | not specified | not specified | not specified | 10 Year |
| Form Factor | not specified | ATX | ATX | ATX | Mini ITX | not specified | ATX |
| PCIe Version | not specified | PCIe 5.1 | PCIe 5.1 | not specified | not specified | not specified | PCIe 5.1 |
| Recommended Use | not specified | not specified | not specified | not specified | not specified | not specified | Gaming |
| Connector | not specified | not specified | not specified | not specified | not specified | not specified | 12V-2x6 Connector |
| Size | not specified | 850W | 750W | 1000W | 400W_Gold | not specified | 850W |
| Dimensions | 10 × 2 × 2.7 inches | 6.3 × 5.91 × 3.39 inches | 6.3 × 5.91 × 3.39 inches | 5.91 × 5.51 × 3.39 inches | 5.9 × 1.6 × 3.25 inches | 9.45 × 8.66 × 3.94 inches | 5.91 × 5.91 × 3.39 inches |
| Weight | not specified | 3.75 pounds | 3.75 pounds | 3.66 pounds | 2 pounds | 4.41 pounds | 7.15 pounds |
| Model | GAMMA II | not specified | CP-9020273-NA | not specified | FSP400-60FGGBA | RGPS-650W | MPG A850G PCIE 5 |
| Color | not specified | White | White | Black | not specified | not specified | not specified |
Frequently asked questions
Which alternative offers the best PCIe 5.1 support?
The Corsair RM750x Shift is an excellent choice for modern GPU connectivity. It supports ATX 3.1 standards and includes native PCIe 5.1 cables. This allows you to connect the latest graphics cards without using adapters. The side-mounted connectors also help keep your cable management clean and organized inside the case.
What is the most compact option for small builds?
The FSP 400W Gold Flex is designed specifically for Mini ITX cases. It measures just 1.6 inches wide, making it one of the smallest units available. This compact form factor fits easily into tight spaces. It provides 80 Plus Gold efficiency for low-power systems that do not require high wattage.
Which unit provides the most power headroom?
The Corsair RM1000e delivers 1000W of power, offering significant headroom for high-end builds. It maintains 80 Plus Gold efficiency while supporting fully modular cables. This extra wattage ensures stable performance for systems with multiple high-power components. It fits standard ATX cases, provided you have the necessary space for its dimensions.
Is there a white PSU option for aesthetic builds?
Both the Corsair RM850x Shift and the Corsair RM750x Shift come in white. These units feature a clean white color scheme that matches white-themed cases. They also share the same compact ATX 3.1 design with side-mounted connectors. This makes them ideal for users who prioritize a cohesive visual look in their build.
Which alternative is best for pure gaming performance?
The MSI MPG 850W Gold is optimized for gaming rigs. It features a 12V-2x6 connector for direct PCIe 5.1 compatibility. The unit is fully modular and includes a ten-year warranty. Its compact size and high efficiency make it a reliable choice for gamers who need consistent power delivery during intensive sessions.
What is the best budget-friendly gold modular option?
The Redragon 650W offers 80 Plus Gold efficiency in a fully modular design. It provides a solid balance of performance and value for mid-range systems. While it lacks the latest ATX 3.1 standards, it handles standard power requirements well. This makes it a practical choice for users who prioritize efficiency and cable management over newer connectors.