2 Best Montech PC Power Supplies Under $150, Compared
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Finding the best montech PC power supplies under $150 requires checking published specs carefully. We compared 2 models to help you choose. Our top pick is the Montech Century G5 850W Power Supply. It leads because it offers 80 Plus Gold efficiency and ATX 3.0 readiness for standard high-end builds. The selections are based strictly on the specifications listed by the manufacturer. This guide helps you decide which unit fits your system's wattage and form factor needs without guessing.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Montech Century G5 850W Power Supply Best overall | ATX 3.0 builds needing 850W | Check price of Montech Century G5 850W Power Supply on Amazon |
| 2 | Montech Century II 1200W ATX 3.1 Power Supply Best budget | High-wattage modern builds | Check price of Montech Century II 1200W ATX 3.1 Power Supply on Amazon |
The best fit for you
- You build an ATX 3.0 system needing 850W Montech Century G5 850W Power Supply It is an 850W ATX 3.0 unit with 80 Plus Gold efficiency.
- You need high wattage for modern enthusiast hardware Montech Century II 1200W ATX 3.1 Power Supply It delivers 1200W and supports the latest ATX 3.1 standard.
- You prefer a fully modular cable management setup Montech Century G5 850W Power Supply It features fully modular cabling for cleaner builds.
Our 2 picks
Montech Century G5 850W Power Supply
Best for: ATX 3.0 builds needing 850W
- Wattage
- 850W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.0
- Warranty
- 5-year
- Dimensions
- 5.51 × 5.9 × 3.38 inches
View on Amazon: Montech Century G5 850W Power Supply Affiliate link
The Montech Century G5 850W is a fully modular power supply built for modern systems. It carries an 80 Plus Gold efficiency rating and supports ATX 3.0 standards. This unit handles PCIe Gen 5 graphics cards with native 12VHPWR support. It uses a full-bridge LLC topology and Japanese capacitors for stable output. The 850W capacity suits mid-to-high-end builds without excessive bulk.
Pros
- 80 Plus Gold efficiency rating
- ATX 3.0 and PCIe Gen 5 compatible
- Fully modular cable design
- Full-bridge LLC resonant converter
- 5-year warranty coverage
Cons
- Lower wattage than the 1200W competitor
- Heavier at 6.22 pounds
- No app or remote control
Good fit if
- You need ATX 3.0 support for new GPUs
- You want high efficiency at 850W
- You prefer fully modular cables
Skip if
- You require more than 850W
- You need a 1200W unit
- You want smart connectivity features
Verdict: Montech Century G5 850W Gold delivers solid ATX 3.0 readiness and efficiency for standard high-end builds, though it lacks the raw power of larger options.
Montech Century II 1200W ATX 3.1 Power Supply
Best for: High-wattage modern builds
- Wattage
- 1200W
- Efficiency Rating
- 80 Plus Gold
- Modularity
- Fully Modular
- ATX Version
- ATX 3.1
- PCIe Connector Type
- 12V-2x6
- Fan Size
- 135mm
View on Amazon: Montech Century II 1200W ATX 3.1 Power Supply Affiliate link
The Montech Century II is a 1200W fully modular power supply built for modern systems. It supports ATX 3.1 and PCIe 5.1 standards with a 12V-2x6 cable. The unit carries an 80 Plus Gold efficiency rating and uses 100% Japanese capacitors. A 135mm fan features a zero RPM mode for silent operation. It includes a 10-year warranty and comprehensive protection circuits. This unit suits users needing high wattage for future-proof builds.
Pros
- 1200W output capacity
- ATX 3.1 and PCIe 5.1 compatibility
- 80 Plus Gold efficiency rating
- 135mm fan with zero RPM mode
- 10-year warranty coverage
Cons
- Heavier at 5.29 pounds
- Larger 10-inch dimensions
- Higher wattage may be excessive for mid-range builds
Good fit if
- You need ATX 3.1 support for new GPUs
- You require 1200W for high-end components
- You want 80 Plus Gold efficiency
Skip if
- You only need 850W or less
- You prefer a compact SFX form factor
- You want a lower price point
Verdict: Montech Century II 1200W ATX 3.1 provides robust power and modern connectivity for enthusiasts upgrading to the latest hardware standards. It is ideal for users building high-performance rigs that demand stable power delivery and future compatibility.
Specifications side by side
| Spec | Montech Century G5 850W Power Supply | Montech Century II 1200W ATX 3.1 Power Supply |
|---|---|---|
| Wattage | 850W | 1200W |
| Efficiency Rating | 80 Plus Gold | 80 Plus Gold |
| Modularity | Fully Modular | Fully Modular |
| ATX Version | ATX 3.0 | ATX 3.1 |
| PCIe Connector Type | not stated | 12V-2x6 |
| Fan Size | not stated | 135mm |
| Warranty | 5-year | 10-Year |
| Form Factor | ATX | Compact |
| PCIe Version | not stated | PCIe 5.1 |
| Connector | not stated | 12V-2x6 Connector |
| Size | 850W | 1200W |
| Dimensions | 5.51 × 5.9 × 3.38 inches | 10 × 10 × 10 inches |
| Weight | 6.22 pounds | 5.29 pounds |
| Model | CENTURY G5 850W | 17-959-010 |
| Color | not stated | Silver |
Choosing Your Montech Power Supply Specs
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Check Efficiency Ratings
Look for the 80 Plus Gold certification on both listed units. This rating means the power supply converts at least 90 percent of AC power to DC power at typical loads. Higher efficiency reduces heat and lowers electricity costs over time. Both the Montech Century G5 and Century II carry this Gold badge. You get better performance and less wasted energy compared to lower-tier Bronze or White models. This spec is critical for long-term reliability and operating cost.
-
Verify ATX Version
Match the ATX version to your motherboard and GPU requirements. The top pick supports ATX 3.0, which includes native support for modern graphics card connectors. If you plan to upgrade to the latest hardware standards later, consider the second option. It features ATX 3.1 support for future-proofing. Check your specific component manuals to ensure compatibility. Using an older standard may require adapters or limit upgrade paths. The version dictates connector availability and power delivery protocols.
-
Assess Wattage Needs
Select the wattage based on your system components. The first model provides 850W, suitable for standard high-end builds with mid-range to high-end GPUs. If you have multiple GPUs or extreme overclocking needs, the second model offers 1200W. Ensure the total power draw of your CPU and GPU stays below this limit. Leaving headroom helps with efficiency and thermal management. Do not overspend on excessive wattage if your components do not require it. Match the spec to your actual hardware demands.
-
Confirm Modularity
Both units are fully modular, meaning you connect only the cables you need. This feature simplifies cable management inside your case. You avoid clutter and improve airflow by removing unused wires. Fully modular designs also make installation easier for beginners. Check that all necessary cables are included in the box. This spec applies to both the Century G5 and Century II models. It is a standard expectation for power supplies in this price range and performance tier.
-
Check Physical Dimensions
Measure your case space before purchasing. The Century G5 is compact at 5.9 inches wide. The Century II is larger at 10 inches wide. Ensure your case can accommodate the specific width and length of your chosen unit. Small form factor cases may not fit the larger model. Check the mounting holes and clearance for other components. Physical dimensions vary significantly between these two options. Verify compatibility with your specific chassis to avoid installation issues.
Frequently asked questions
Is the Montech Century G5 850W fully modular?
Yes, the Montech Century G5 850W Power Supply features fully modular cabling. This design lets you connect only the cables your build requires. It helps keep your case interior clean and improves airflow. The unit also holds an 80 Plus Gold efficiency rating for reliable power conversion.
What is the difference between ATX 3.0 and ATX 3.1?
ATX 3.1 is the newer standard that builds upon ATX 3.0 features. The Montech Century II 1200W supports ATX 3.1 for future-proof compatibility. The Century G5 850W uses ATX 3.0, which is still current for most high-end systems. Both standards ensure stable power delivery for modern components.
How big is the Montech Century II 1200W power supply?
The Montech Century II 1200W measures 10 inches in width, 10 inches in height, and 10 inches in length. It weighs 5.29 pounds. This larger form factor accommodates its higher 1200W output capacity. Ensure your PC case has enough space to fit these dimensions before purchasing.
Does the Century G5 850W support ATX 3.0 builds?
Yes, this unit is explicitly rated for ATX 3.0 builds. It delivers 850W of power with 80 Plus Gold efficiency. Its dimensions are 5.9 inches wide, 3.38 inches high, and 5.51 inches long. It weighs 6.22 pounds. This makes it a compact choice for standard high-end systems.
Which Montech PSU is best for high-wattage modern builds?
The Montech Century II 1200W is the best choice for high-wattage needs. It provides 1200W of output and supports the ATX 3.1 standard. This model is designed for enthusiasts upgrading to the latest hardware. It offers robust power delivery for demanding graphics cards and processors.
Are both listed Montech power supplies fully modular?
Yes, both the Century G5 850W and the Century II 1200W are fully modular. You can detach all cables from the unit. This allows for precise cable management and a cleaner installation. Both units also carry the 80 Plus Gold efficiency certification for optimal energy use.