How Big Is Corsair RM750e? Unveiling the Dimensions
The Corsair RM750e is a standard ATX power supply measuring 150mm (W) x 86mm (H) x 140mm (L). This compact size ensures compatibility with a wide range of PC cases.
Understanding Power Supply Sizes and Form Factors
Power supplies come in various sizes, known as form factors, each designed for specific types of computer cases and usage scenarios. Understanding these form factors is crucial when choosing a PSU for your build. The Corsair RM750e adheres to the common ATX form factor, making it a versatile choice for many standard PC builds. Other form factors include:
- ATX: The most common form factor, used in standard desktop PCs.
- SFX: Smaller form factor, designed for mini-ITX and small form factor (SFF) cases.
- SFX-L: A slightly longer version of SFX, allowing for larger, quieter fans.
- TFX: A long and narrow form factor, often used in slimline cases.
Selecting the right form factor ensures the PSU fits physically within the case and provides adequate power for the system’s components.
Why Power Supply Size Matters
The size of your power supply has several implications for your PC build. First and foremost, it determines whether the PSU will physically fit inside your case. A PSU that is too large may prevent you from closing the case or interfere with other components. Smaller form factors, like SFX, allow for more compact builds, especially important in mini-ITX systems where space is limited.
Furthermore, the size can influence the PSU’s cooling capabilities. Larger PSUs often have more space for larger fans, which can operate at lower speeds and produce less noise. Smaller PSUs, on the other hand, may require smaller, faster fans to maintain adequate cooling, potentially leading to increased noise levels.
Finally, size considerations play a role in cable management. Some smaller cases can make it difficult to route cables, and a more compact PSU might offer slightly more flexibility in tight spaces. However, fully modular PSUs such as the Corsair RM750e tend to improve cable management regardless of physical size.
Dimensions of the Corsair RM750e: A Detailed Look
The Corsair RM750e, as previously mentioned, measures 150mm (W) x 86mm (H) x 140mm (L). These dimensions make it a standard ATX PSU. Let’s break down each dimension:
- Width (W): 150mm – This is the standard width for ATX PSUs.
- Height (H): 86mm – Also a standard height for ATX PSUs, allowing for integration into various cases.
- Length (L): 140mm – This is a relatively compact length for an ATX PSU, making it suitable for cases with limited space for power supplies.
These measurements are crucial for ensuring compatibility with your chosen PC case. Always refer to your case’s specifications to confirm it can accommodate a standard ATX PSU with a length of 140mm.
Benefits of the Corsair RM750e’s Size
The compact size of the Corsair RM750e offers several advantages:
- Wide Case Compatibility: It fits in a vast majority of ATX cases.
- Easier Cable Management: A slightly shorter PSU can create a bit more room for managing cables.
- Ample Power: Despite its compact size, the RM750e delivers 750 watts of power, sufficient for mid-to-high-end gaming PCs.
While it’s not the smallest PSU available, its balance of size and power makes it a popular choice for many builders.
Common Mistakes When Considering Power Supply Size
Choosing the wrong size PSU is a common mistake that can lead to significant issues. Here are some pitfalls to avoid:
- Not checking case specifications: Always verify that your case can accommodate a standard ATX PSU.
- Ignoring cable management space: Ensure enough room for cable routing, especially in smaller cases.
- Assuming all ATX PSUs are the same size: While the width and height are typically standard, the length can vary, affecting compatibility.
Careful planning and attention to detail are essential when selecting the right PSU for your system.
Tools and Resources for Determining Power Supply Size Requirements
Several tools and resources can help you determine the appropriate PSU size and wattage for your system:
- PC Part Picker: This website allows you to select your components and estimates the required wattage.
- Power Supply Calculators: Many websites offer PSU calculators that factor in your components and usage patterns.
- Case Manuals: Case manuals always provide information on the supported PSU form factors and maximum PSU length.
Utilizing these resources can help you avoid compatibility issues and ensure you select a PSU that meets your system’s power needs.
Comparing the Corsair RM750e to Other Power Supplies
| Feature | Corsair RM750e | SFX Form Factor PSU | Larger ATX PSU (e.g., 850W+) |
|---|---|---|---|
| Form Factor | ATX | SFX | ATX |
| Dimensions | 150 x 86 x 140 mm | Significantly Smaller | 150 x 86 x 160+ mm |
| Case Support | Most ATX Cases | SFF/Mini-ITX Cases | Larger ATX Cases |
| Cable Management | Good (Fully Modular) | Very Good (Typically) | Good (Typically Fully Modular) |
| Cooling | Good | Can be Noisier | Excellent |
By comparing the Corsair RM750e to other PSU form factors, you can better understand its place in the market and determine if it’s the right fit for your build.
What Else to Consider Besides Size
While the physical size of the PSU is important, it’s not the only factor to consider. Other crucial aspects include:
- Wattage: Ensure the PSU provides enough power for all your components.
- Efficiency: Look for PSUs with high efficiency ratings (e.g., 80+ Gold, Platinum, or Titanium) to minimize energy waste.
- Modularity: Fully modular PSUs allow you to connect only the necessary cables, improving cable management.
- Certifications: Look for reputable certifications that guarantee quality and performance.
Taking these factors into account ensures you select a PSU that is both compatible and reliable.
Frequently Asked Questions (FAQs)
What exactly does “ATX form factor” mean?
The ATX form factor is a standardized specification for power supplies and motherboards, defining their dimensions, mounting points, and connectors. It is the most common form factor for desktop PCs, ensuring compatibility between different components. The Corsair RM750e adheres to this standard.
Can I use the Corsair RM750e in a Mini-ITX case?
While the Corsair RM750e is a standard ATX PSU, it’s unlikely to fit in most Mini-ITX cases. Mini-ITX cases usually require smaller SFX or SFX-L power supplies. Always check your case’s specifications before purchasing a PSU.
Is the 140mm length of the Corsair RM750e considered short for an ATX PSU?
Yes, the 140mm length is generally considered relatively short for an ATX PSU. Some higher-wattage or premium ATX PSUs can be 160mm or even longer, making the Corsair RM750e a good option for cases with limited PSU bay space.
Does the size of the Corsair RM750e affect its airflow and cooling performance?
The size of the Corsair RM750e can indirectly affect airflow and cooling. However, Corsair designs its PSUs to provide adequate cooling regardless of size. While a physically larger PSU might have more room for a larger fan, the RM750e’s design is optimized for efficient cooling within its dimensions.
What happens if my power supply is too big for my case?
If your power supply is too big for your case, you won’t be able to install it. It may prevent you from closing the case or interfere with other components. Always double-check case specifications before purchasing a PSU.
How important is modularity in relation to power supply size?
Modularity is very important, especially when considering power supply size and cable management. A fully modular PSU like the Corsair RM750e allows you to connect only the necessary cables, reducing clutter and improving airflow, regardless of the PSU’s physical size.
Does a smaller power supply like the Corsair RM750e mean less power available?
No, a smaller power supply doesn’t necessarily mean less power. The Corsair RM750e provides 750 watts of power, which is sufficient for many mid-to-high-end gaming PCs, despite its compact size. Power output is determined by the PSU’s design and components, not solely its dimensions.
Are there specific PC case brands known for having smaller PSU compartments?
Yes, some PC case brands, especially those focused on small form factor (SFF) builds, are known for having smaller PSU compartments. Brands like Fractal Design, Lian Li, and Cooler Master offer SFF cases that often require SFX power supplies.
What is the best way to measure the available space in my PC case for a power supply?
The best way to measure the available space is to consult your PC case’s manual. The manual typically provides detailed dimensions and specifications, including the maximum supported PSU length. You can also physically measure the available space inside the case with a measuring tape or ruler, but be sure to consult the case’s manual first to identify any obstructions.
How does the weight of the Corsair RM750e relate to its size and overall build quality?
While not directly related to the dimensions (How Big Is Corsair RM750e?), the weight can indirectly indicate the build quality. A heavier PSU often contains higher-quality components, such as larger heatsinks and more robust transformers. However, weight alone isn’t a definitive measure of quality.
Will a larger power supply, even if it fits, offer better performance than the Corsair RM750e?
Not necessarily. A larger power supply with a higher wattage rating only provides more power. If your system doesn’t require the extra power, a larger PSU won’t improve performance. The Corsair RM750e offers excellent performance within its 750-watt capacity.
What kind of warranty does Corsair offer on the RM750e, and does size play a role in the warranty coverage?
Corsair typically offers a multi-year warranty on its RM series power supplies, including the RM750e. The warranty duration and coverage are not affected by the PSU’s size. The warranty covers defects in materials and workmanship within the specified period. Check Corsair’s website for the exact warranty terms and conditions for the RM750e.