EVGA vs FSP: PC Power Supplies Compared by Specs
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When you compare EVGA vs FSP PC power supply options, you face two distinct approaches to building a system. Both brands prioritize reliability through certified efficiency and robust protection circuits. The main difference lies in their intended use cases and physical dimensions. One offers a standard modular design for general desktops, while the other provides a compact, high-efficiency unit for small form factor builds. Understanding these spec differences helps you choose the right fit for your case and power needs.
Key differences
| Aspect | EVGA SuperNOVA 750W Bronze Power Supply | FSP 400W Gold Flex ATX Mini ITX Power Supply |
|---|---|---|
| Efficiency Rating | 80PLUS Bronze | 80 Plus Gold |
| Form Factor | ATX12V/EPS12V | Flex ATX / Mini ITX |
| Modularity | Hybrid Modular | not listed |
| Wattage | 750W | 400W |
Which one should you choose?
Choose EVGA SuperNOVA 750W Bronze Power Supply if
- You need higher wattage for a standard ATX desktop build.
- You want hybrid modularity to reduce cable clutter.
- You require standard ATX dimensions for larger cases.
Choose FSP 400W Gold Flex ATX Mini ITX Power Supply if
- You are building a small form factor or Mini ITX system.
- You prioritize higher energy efficiency with Gold certification.
- You need a compact unit with low noise for quiet operation.
Verdict: Choose the EVGA unit if you need more power and standard ATX dimensions for a typical desktop. Pick the FSP model if you are constrained by space or require higher efficiency for a small form factor build. Your choice depends entirely on your case size and wattage requirements.
EVGA vs FSP PSU Specs
efficiency rating
Efficiency determines how much electricity converts to usable power. The EVGA SuperNOVA 750W Bronze Power Supply holds an 80PLUS Bronze certification, achieving up to 85% efficiency under typical loads. This is a solid baseline for standard desktop builds. In contrast, the FSP 400W Gold Flex ATX Mini ITX Power Supply carries an 80 Plus Gold rating, delivering greater than 90% efficiency. Higher efficiency reduces wasted energy and heat generation. While the EVGA unit meets common standards, the FSP unit offers superior energy conversion, which lowers operating costs and thermal output in compact systems.
wattage output
Wattage indicates the maximum power the unit can deliver to your components. The EVGA SuperNOVA 750W Bronze Power Supply provides 750 watts of continuous power. This capacity supports high-end graphics cards and multiple storage drives in larger cases. The FSP 400W Gold Flex ATX Mini ITX Power Supply offers 400 watts. This lower output is designed for lightweight builds, mini PCs, or basic office computers. If you require significant power for gaming or rendering, the EVGA option provides nearly double the capacity. The FSP unit is strictly for low-power applications.
form factor
Form factor dictates which computer cases the power supply fits. The EVGA SuperNOVA 750W Bronze Power Supply uses a standard ATX12V/EPS12V design with dimensions of 7.1 inches in length, 5.9 inches in width, and 3.4 inches in height. This fits most mid-tower and full-tower cases. The FSP 400W Gold Flex ATX Mini ITX Power Supply is a Flex ATX unit, measuring only 5.9 inches long, 3.25 inches wide, and 1.6 inches high. This compact size is essential for Mini ITX builds where space is extremely limited. The EVGA unit is for standard cases, while the FSP unit is for small form factor chassis.
modularity
Modularity affects cable management and airflow inside your case. The EVGA SuperNOVA 750W Bronze Power Supply features a Hybrid Modular Design. This allows you to connect only the cables you need, reducing clutter and improving airflow. The FSP 400W Gold Flex ATX Mini ITX Power Supply does not list modularity in its specifications. Flex ATX units in this class are often semi-modular or fully non-modular. Without explicit data, we cannot confirm cable management options for the FSP unit. The EVGA unit clearly offers modular benefits for cleaner builds.
fan type
The cooling fan impacts noise levels and reliability. The EVGA SuperNOVA 750W Bronze Power Supply uses a quiet 2-ball Bearing Fan. Ball bearings generally offer longer lifespans and consistent performance over time. The FSP 400W Gold Flex ATX Mini ITX Power Supply includes a 4 cm fan. This small fan size is typical for compact units but can generate more noise under load compared to larger fans. The EVGA unit specifies a bearing type that suggests durability, while the FSP unit relies on a small form factor fan. Both aim for quiet operation, but the EVGA design is standard for larger cases.
Which EVGA or FSP PSU fits your build
Standard desktop builders needing high wattage
You need reliable power for a standard ATX case. This EVGA unit delivers 750W with 80PLUS Bronze efficiency. The hybrid modular design reduces cable clutter. It includes comprehensive protections like over-voltage and short-circuit safeguards. The 2-ball bearing fan ensures quiet operation under typical loads.
Mini ITX or server chassis users
Your case has limited space, requiring a small form factor. This FSP power supply fits Flex ATX dimensions. It offers 80PLUS Gold efficiency for better energy savings. The compact 400W output suits low-power systems or industrial applications. Its small footprint allows installation in tight Mini ITX builds without obstruction.
Users prioritizing peak energy efficiency
You want maximum efficiency from your power supply. This FSP unit carries an 80PLUS Gold certification, exceeding 90% efficiency. This rating reduces wasted electricity and heat generation. While the wattage is lower, the higher efficiency class benefits systems running continuously or in energy-conscious environments.
The products compared
EVGA SuperNOVA 750W Bronze Power Supply
Best for: Mid-range builds needing reliable power
- Wattage
- 750W
- Efficiency Rating
- 80PLUS Bronze
- Modularity
- Hybrid Modular
- Dimensions
- 7.1 × 5.9 × 3.4 inches
- Weight
- 7 pounds
View on Amazon: EVGA SuperNOVA 750W Bronze Power Supply Affiliate link
This EVGA power supply delivers 750 watts with 80 PLUS Bronze efficiency, reaching up to 85% under typical loads. It features a hybrid modular design to reduce cable clutter and improve airflow. Japanese capacitors support long-term reliability. The unit includes comprehensive protections like OVP, UVP, and OCP. It suits builders who need solid mid-range performance without the cost of full modularity.
Pros
- 750W output capacity
- 80 PLUS Bronze efficiency up to 85%
- Hybrid modular design reduces clutter
- Japanese brand capacitors for reliability
- Multiple heavy-duty protections included
Cons
- Only 80 PLUS Bronze efficiency rating
- Hybrid modularity requires some fixed cables
- Heavier than high-efficiency gold units
Good fit if
- You need reliable 750W output
- You want to reduce cable clutter
- You prioritize component longevity
Skip if
- You require full modularity
- You need 80 PLUS Gold efficiency
- You prefer lighter power supplies
Verdict: EVGA SuperNOVA NEX 750W Bronze is a solid choice for builders seeking reliable power and cleaner cable management without paying for full modularity. It fits systems that benefit from stable voltage and efficient operation.
FSP 400W Gold Flex ATX Mini ITX Power Supply
Best for: Mini ITX systems 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 Affiliate link
This FSP power supply is built for Mini ITX cases. It delivers 400W at 80 Plus Gold efficiency, meaning it wastes less energy as heat. The compact 1.6-inch height fits tight spaces. A 4 cm fan keeps noise low. It includes one PCIe 6+2 pin for graphics cards. It suits small builds needing reliable, efficient power.
Pros
- 80 Plus Gold efficiency rating
- Compact 1.6-inch height
- Single PCIe 6+2 pin connector
- 4 cm fan for low noise
Cons
- Only 400W output
- Small 4 cm fan size
- Single PCIe connector limits GPU options
Good fit if
- You need a Mini ITX power supply
- You want high efficiency for lower heat
- You have a small graphics card
Skip if
- You need more than 400W
- You require multiple PCIe connectors
- You are building a standard ATX case
Verdict: FSP Mini ITX 400W Gold PSU is a specialized unit for small form factor builds. It fits users who prioritize efficiency and compact size over raw power.
Specifications side by side
| Spec | EVGA SuperNOVA 750W Bronze Power Supply | FSP 400W Gold Flex ATX Mini ITX Power Supply |
|---|---|---|
| Wattage | 750W | 400W |
| Efficiency Rating | 80PLUS Bronze | 80 Plus Gold |
| Modularity | Hybrid Modular | not stated |
| PCIe Connector Type | not stated | 6+2 pin |
| Fan Size | not stated | 4 cm |
| Form Factor | not stated | Mini ITX |
| Dimensions | 7.1 × 5.9 × 3.4 inches | 5.9 × 1.6 × 3.25 inches |
| Weight | 7 pounds | 2 pounds |
| Color | Black | not stated |
| Model | 120-PB-0750-KR | FSP400-60FGGBA |
| Size | not stated | 400W_Gold |
Frequently asked questions
Is EVGA better than FSP for a standard desktop build?
EVGA suits standard ATX cases needing high wattage. The SuperNOVA 750W Bronze offers 750W of power with 80PLUS Bronze efficiency. Its hybrid modular design helps manage cables in larger towers. FSP focuses on different niches, making EVGA the practical choice for general-purpose mid-range systems.
Which power supply is best for a Mini ITX case?
FSP provides a specialized unit for small form factor builds. The 400W Gold Flex ATX Mini ITX PSU fits tight spaces. It measures just 1.6 inches in width. This compact design prioritizes efficiency and size over raw power, making it ideal for Mini ITX systems with lower power needs.
How do the efficiency ratings compare between these brands?
The EVGA unit holds an 80PLUS Bronze certification. This ensures reliable operation and stable voltage for standard builds. The FSP option achieves 80PLUS Gold certification. Gold ratings indicate higher efficiency under typical loads. You choose Bronze for cost-effective reliability or Gold for maximum energy savings in smaller builds.
What is the physical size difference between these PSUs?
The EVGA SuperNOVA is a standard ATX size. It measures 5.9 inches wide and 7.1 inches long. The FSP unit is significantly smaller. It measures only 1.6 inches wide and 5.9 inches long. The FSP design fits Mini ITX cases, while the EVGA fits standard ATX towers.
Which PSU is lighter and easier to install?
The FSP power supply is much lighter. It weighs only 2 pounds due to its compact construction. The EVGA unit weighs 7 pounds. The lighter FSP unit is easier to handle in small cases. The heavier EVGA unit provides more power for standard builds.
Can I use the FSP PSU in a standard ATX case?
The FSP unit is designed specifically for Mini ITX systems. Its small dimensions may not fit standard ATX cases easily. The EVGA SuperNOVA is built for standard ATX towers. It offers 750W of power, which fits typical desktop builds better than the specialized 400W FSP option.