CORSAIR RM750e ATX 3.1 PCIe 5.1 Ready Fully Modular 750W Power Supply – 12V-2x6 Cable Included, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – White
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AI Verdict
This 750W ATX 3.1 fully modular PSU with a 12V-2x6 cable is for builds needing modern GPU support in a compact 140mm form factor.
This PSU is a strong fit for modern gaming PCs, especially those with NVIDIA 40 Series GPUs, due to its ATX 3.1 compliance and included 12V-2x6 cable. Its fully modular design and 140mm length also make it suitable for builds where space and cable management are important.
If you need more than 750W or absolute silence, look for PSUs with higher wattage ratings and a Cybenetics A- or A noise rating, or larger fan sizes like 135mm or 140mm with a focus on low RPMs.
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Pros
- Includes a native 12V-2x6 GPU connector for PCIe 5.1 graphics cards.
- Complies with the ATX 3.1 power standard, supporting 2x transient power excursions.
- Features a fully modular design for connecting only necessary cables.
- Equipped with 105°C-rated industrial-grade capacitors for consistent power.
- Offers a compact 140mm-long casing for easier fit in PC cases.
- Backed by a 7-year warranty.
Cons
- Some users report fan noise, especially under load, despite Zero RPM mode.
- The 12V-2x6 cable requires two 8-pin PCIe connectors on the PSU side, which is a non-standard connection method.
- One user noted only 2 SATA ports, which can be limiting for storage-heavy builds.
- Thermal efficiency reportedly drops noticeably under load.
Dimension Scores
The PSU is Cybenetics Gold certified with up to 89-90% efficiency and is ATX 3.1 compliant, supporting 2x transient power excursions.
It features a 120mm rifle bearing fan with Zero RPM mode, but user reports indicate it can be noisier than comparable units under load and may produce clicking sounds.
It uses 105°C-rated industrial-grade capacitors and comes with a 7-year warranty, indicating a focus on durability.
The fully modular design allows for connecting only essential cables, and its compact 140mm length provides more space for routing.
Best For
- PC builds featuring modern NVIDIA 40 Series graphics cards.
- Compact PC cases due to its 140mm length.
- Users prioritizing clean cable management with fully modular cabling.
Not Recommended For
- Extremely silent PC builds where any fan noise is a concern.
- Systems requiring numerous SATA power connections, like a NAS with many drives.
Watch Out For
- Multiple Reddit users have reported hearing clicking noises or finding the unit noisier than other Corsair RM series PSUs.
- Some buyers experienced units that were dead on arrival (DOA).
- The 12V-2x6 cable connects to the PSU via two 8-pin PCIe connectors, which can be confusing or limit other connections.
- A user building a NAS returned the unit because it only had 2 SATA power ports, which was insufficient for their needs.
Full Specifications
| ASIN | B0FLG9RNY4 |
| Brand | Corsair |
| Color | White |
| Series | RM750e |
| Wattage | 750 watts |
| Model Name | RM750e |
| Form Factor | ATX |
| Item Weight | 3.3 pounds |
| Manufacturer | Corsair |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 750 Watts |
| Item model number | CP-9020292-NA/AM |
| Compatible Devices | Monitor |
| Product Dimensions | 5.91 x 5.51 x 3.35 inches |
| Item Dimensions LxWxH | 5.91 x 5.51 x 3.35 inches |
| Item dimensions L x W x H | 5.91 x 5.51 x 3.35 inches |
What Buyers Say
The biggest surprise from user feedback is the recurring complaint about noise, with several users reporting clicking sounds or the fan being audible even with Zero RPM mode enabled, which contradicts the 'low-noise' marketing. Many users appreciate the fully modular design for making builds cleaner and the inclusion of the 12V-2x6 cable for new GPUs. However, some have received units dead on arrival, and one user found the limited SATA ports problematic for a storage-heavy system. The compact 140mm size is a definite plus for smaller cases.
“Man, I just wanted a PSU that wouldn't blow up my new GPU, and this one does the job, but the fan noise is definitely there, not silent like I hoped.”
Common Praise
- The fully modular cabling makes PC builds much cleaner.
- Includes the 12V-2x6 cable, which is essential for newer graphics cards.
- The 140mm length fits well in various PC cases.
- ATX 3.1 compliance provides peace of mind for modern systems.
Common Complaints
- Fan can be noisy under load, and some users reported clicking sounds.
- Units arriving dead on arrival were mentioned by some users.
- Limited number of SATA power connectors (reported as 2 by one user).
- The 12V-2x6 cable uses two 8-pin PCIe connections on the PSU side, which is a bit clunky.
Ownership Tips
- The fan curve can be more aggressive than expected, causing the fan to spin up even during moderate loads.
- The included cables are flexible enough for routing in most cases.
- Modern Standby works as advertised, waking the system quickly.
- The 12V-2x6 cable feels sturdy and securely connects to the GPU.
Frequently Asked Questions
Is this power supply compatible with the latest graphics cards?
Yes, it is PCIe 5.1 compliant and includes a native 12V-2x6 GPU power connector, making it compatible with modern cards like the NVIDIA 40 Series.
Does this PSU make a lot of noise?
It features a 120mm rifle bearing fan with a Zero RPM mode for low loads. However, some users have reported it can be noisier than other RM series PSUs under load, with some mentioning clicking sounds.
What does 'fully modular' mean?
Fully modular means you only connect the cables your system needs, which helps reduce clutter and improve airflow inside your PC case.
What is the warranty period for this power supply?
The CORSAIR RM750e comes with a 7-year warranty.
What is ATX 3.1 compliance?
ATX 3.1 is a power standard that ensures high reliability and power efficiency, specifically designed to handle the transient power demands of modern GPUs.
Buying Guide
When you're picking a power supply, you're basically choosing the heart of your PC. It needs to deliver enough stable power to all your components without failing or making too much noise. Don't just look at the wattage; efficiency ratings and compliance with new standards like ATX 3.1 are crucial for modern, power-hungry graphics cards. A fully modular design will save you headaches during building by letting you only plug in the cables you actually need.
wattage
This is the total power your PSU can provide. Think of it like the horsepower of a car; if your engine (PC components) needs 700 horsepower, a 500-horsepower engine won't cut it. Make sure your PSU wattage exceeds the combined power draw of your CPU and GPU, plus a little extra for other components and future upgrades.
ATX 3.1 / PCIe 5.1 Ready
These are the latest standards for power supplies, especially important for new graphics cards. ATX 3.1 ensures the PSU can handle sudden, brief spikes in power demand from your GPU without shutting down, like a robust electrical grid that can handle unexpected surges. PCIe 5.1 means it has the right connector (12V-2x6) for these new cards, so you don't need clunky adapters.
Fully Modular
This means all the cables detach from the power supply. Imagine building with LEGOs where you only use the pieces you need, instead of having a bunch of unused pieces cluttering up your workspace. It makes your PC build much tidier and improves airflow.
Cybenetics Gold Efficiency
This rating indicates how much power from the wall socket actually reaches your components, versus how much is lost as heat. Gold means it's very efficient (around 87-90%), saving you a bit on your electricity bill and generating less heat inside your case. It's like having a fuel-efficient car that wastes less gas.
Alternatives
If this PSU doesn't fit, search for PSUs with higher wattage (e.g., 850W or 1000W) if you have more power-hungry components, or look for models with a Cybenetics A- or A noise rating for quieter operation.
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